Drugs Similar to ESTRADIOL

Estradiol tablets, USP for oral administration contains 0.5, 1 or 2 mg of micronized estradiol, USP per tablet. Estradiol, USP (17β-estradiol) is a white, crystalline solid, chemically described as estra-1,3,5,(10)-triene-3, 17β-diol. The structural formula is: In addition, each tablet for oral administration contains the following inactive ingredients: lactose monohydrate, magnesium stearate, microcrystalline cellulose and sodium starch glycolate. Structure formula.jpg

Estradiol Tablets, USP for oral administration contains 0.5, 1 or 2 mg of micronized estradiol, USP per tablet. Estradiol, USP (17β-estradiol) is a white, crystalline solid, chemically described as estra-1,3,5,(10)-triene-3, 17β-diol. The structural formula is: C 18 H 24 O 2 M.W. 272.38 Inactive Ingredients: Colloidal silicon dioxide, corn starch, dibasic calcium phosphate, lactose monohydrate, magnesium stearate, and sodium starch glycolate. In addition, the 1 mg also contains FD&C blue no. 1 aluminum lake and D&C red no. 27 aluminum lake. The 2 mg also contains FD&C blue no. 1 aluminum lake and FD&C yellow no. 5 (tartrazine) aluminum lake. structual formula

Estradiol Tablets, USP for oral administration contains 0.5, 1 or 2 mg of micronized estradiol, USP per tablet. Estradiol, USP (17β-estradiol) is a white, crystalline solid, chemically described as estra-1,3,5,(10)-triene-3, 17β-diol. The structural formula is: C 18 H 24 O 2 M.W. 272.38 Inactive Ingredients: Colloidal silicon dioxide, corn starch, dibasic calcium phosphate, lactose monohydrate, magnesium stearate, and sodium starch glycolate. In addition, the 1 mg also contains FD&C blue no. 1 aluminum lake and D&C red no. 27 aluminum lake. The 2 mg also contains FD&C blue no. 1 aluminum lake and FD&C yellow no. 5 (tartrazine) aluminum lake. structual formula

Estradiol gel 0.1%, is a clear, colorless gel, which is odorless when dry. It is designed to deliver sustained circulating concentrations of estradiol, USP when applied once daily to the skin. The gel is applied to a small area (200 cm 2 ) of the thigh in a thin layer. Estradiol gel is available in five doses of 0.25, 0.5, 0.75, 1, and 1.25 grams for topical application (corresponding to 0.25, 0.5, 0.75, 1, and 1.25 mg estradiol USP, respectively). The active component of the topical gel is estradiol USP, an estrogen. Estradiol, USP is a white crystalline powder, chemically described as estra-1,3,5(10)-triene-3,17ß-diol. It has an empirical formula of C 18 H 24 O 2 and molecular weight of 272.38. The structural formula is: The remaining components of the gel (carbomer homopolymer type B, ethyl alcohol 95%, propylene glycol, purified water, and trolamine) are pharmacologically inactive. Estradiol gel, 0.1% contains 55% w/w alcohol. Structural Formula

Estradiol transdermal system, USP continuous delivery (once-weekly) is designed to release estradiol continuously upon application to intact skin. Six (7.75, 11.625, 15.5, 18.6, 23.25 and 31 cm 2 ) systems are available to provide nominal in vivo delivery of 0.025, 0.0375, 0.05, 0.06, 0.075 or 0.1 mg respectively of estradiol per day. The period of use is 7 days. Each system has a contact surface area of either 7.75, 11.625, 15.5, 18.6, 23.25 or 31 cm 2 , and contains estradiol, USP hemihydrate equivalent to 0.97, 1.46, 1.94, 2.33, 2.91 or 3.88 mg of estradiol, respectively. The composition of the systems per unit area is identical. Estradiol, USP hemihydrate is a white, crystalline powder, chemically described as Estra-1,3,5(10)-triene-3,17β-diol-hemihydrate. It has a molecular formula of C 18 H 24 O 2 • ½ H 2 O and molecular weight of 281.39. The structural formula is: Meets USP Drug Release Test 2. The estradiol transdermal system continuous delivery (once-weekly) comprises four layers. Proceeding from the visible surface toward the surface attached to the skin, these layers are: (1) A foam backing with adhesive layer (2) A polyester film (3) An acrylate adhesive matrix containing estradiol. (4) A protective liner of siliconized polyester film is attached to the adhesive surface and must be removed before the system can be used. The active component of the transdermal system is estradiol. The remaining components of the transdermal system (propylene glycol, povidone, anhydrous colloidal silicon dioxide, pressure sensitive acrylic adhesive, copolymer foam, polyester film, and brown ink) are pharmacologically inactive. Estradiol Structural Formula Transdermal Parts

Estradiol Tablets USP for oral administration contains 0.5, 1 or 2 mg of micronized estradiol, USP per tablet. Estradiol, USP (17β-estradiol) is a white to practically white powder, chemically described as estra-1,3,5,(10)-triene-3, 17β-diol. The structural formula is: C 18 H 24 O 2 M.W. 272.38 Inactive Ingredients: Colloidal silicon dioxide, corn starch, microcrystalline cellulose, lactose monohydrate, magnesium stearate, and sodium starch glycolate. In addition, the 1 mg also contains FD&C blue no. 1 aluminum lake and D&C red no. 27 aluminum lake. The 2 mg also contains FD&C blue no. 1 aluminum lake and D&C yellow no. 10 aluminum lake. FDA approved dissolution test specifications differ from USP. structure

Estradiol Tablets USP for oral administration contains 0.5, 1 or 2 mg of micronized estradiol, USP per tablet. Estradiol, USP (17β-estradiol) is a white to practically white powder, chemically described as estra-1,3,5,(10)-triene-3, 17β-diol. The structural formula is: C 18 H 24 O 2 M.W. 272.38 Inactive Ingredients: Colloidal silicon dioxide, corn starch, microcrystalline cellulose, lactose monohydrate, magnesium stearate, and sodium starch glycolate. In addition, the 1 mg also contains FD&C blue no. 1 aluminum lake and D&C red no. 27 aluminum lake. The 2 mg also contains FD&C blue no. 1 aluminum lake and D&C yellow no. 10 aluminum lake. FDA approved dissolution test specifications differ from USP. structure

Estradiol Tablets USP for oral administration contains 0.5, 1 or 2 mg of micronized estradiol, USP per tablet. Estradiol, USP (17β-estradiol) is a white to practically white powder, chemically described as estra-1,3,5,(10)-triene-3, 17β-diol. The structural formula is: C 18 H 24 O 2 M.W. 272.38 Inactive Ingredients: Colloidal silicon dioxide, corn starch, microcrystalline cellulose, lactose monohydrate, magnesium stearate, and sodium starch glycolate. In addition, the 1 mg also contains FD&C blue no. 1 aluminum lake and D&C red no. 27 aluminum lake. The 2 mg also contains FD&C blue no. 1 aluminum lake and D&C yellow no. 10 aluminum lake. FDA approved dissolution test specifications differ from USP. structure

Estradiol Tablets, USP for oral administration contains 0.5, 1 or 2 mg of micronized estradiol, USP per tablet. Estradiol, USP (17β-estradiol) is a white, crystalline solid, chemically described as estra-1,3,5,(10)-triene-3, 17β-diol. The structural formula is: C 18 H 24 O 2 M.W. 272.38 Inactive Ingredients: Colloidal silicon dioxide, corn starch, dibasic calcium phosphate, lactose monohydrate, magnesium stearate, and sodium starch glycolate. In addition, the 1 mg also contains FD&C blue no. 1 aluminum lake and D&C red no. 27 aluminum lake. The 2 mg also contains FD&C blue no. 1 aluminum lake and FD&C yellow no. 5 (tartrazine) aluminum lake. structual formula

Estradiol tablets, USP for oral administration contains 0.5, 1 or 2 mg of micronized estradiol, USP per tablet. Estradiol, USP (17β-estradiol) is a white, crystalline solid, chemically described as estra-1,3,5,(10)-triene-3, 17β-diol. The structural formula is: In addition, each tablet for oral administration contains the following inactive ingredients: Lactose monohydrate, magnesium stearate, microcrystalline cellulose and sodium starch glycolate. structural-formula

Estradiol tablets, USP for oral administration contains 0.5, 1 or 2 mg of micronized estradiol, USP per tablet. Estradiol, USP (17β-estradiol) is a white, crystalline solid, chemically described as estra-1,3,5,(10)-triene-3, 17β-diol. The structural formula is: In addition, each tablet for oral administration contains the following inactive ingredients: lactose monohydrate, magnesium stearate, microcrystalline cellulose and sodium starch glycolate. Structure formula.jpg

Estradiol tablets, USP for oral administration contains 0.5, 1 or 2 mg of micronized estradiol, USP per tablet. Estradiol, USP (17β-estradiol) is a white, crystalline solid, chemically described as estra-1,3,5,(10)-triene-3, 17β-diol. The structural formula is: In addition, each tablet for oral administration contains the following inactive ingredients: lactose monohydrate, magnesium stearate, microcrystalline cellulose and sodium starch glycolate.

Estradiol Gel, 0.1% is a clear, colorless smooth gel, free from visible particulate matter. It is designed to deliver sustained circulating concentrations of estradiol when applied once daily to the skin. The gel is applied to a small area (200 cm 2 ) of the thigh in a thin layer. Estradiol gel is available in five doses of 0.25, 0.5, 0.75, 1.0, and 1.25 grams for topical application (corresponding to 0.25, 0.5, 0.75, 1.0, and 1.25 mg estradiol, respectively). The active component of the topical gel is estradiol. Estradiol is a white crystalline powder, chemically described as estra-1,3,5(10)-triene-3,17ß-diol. It has an empirical formula of C 18 H 24 O 2 and molecular weight of 272.39. The structural formula is: The remaining components of the gel (carbomer, alcohol [62%], propylene glycol, purified water, and trolamine) are pharmacologically inactive. estradiol-structure

Estradiol Tablets, USP for oral administration contains 0.5, 1 or 2 mg of micronized estradiol, USP per tablet. Estradiol, USP (17β-estradiol) is a white, crystalline solid, chemically described as estra-1,3,5,(10)-triene-3, 17β-diol. The structural formula is: C 18 H 24 O 2 M.W. 272.38 Inactive Ingredients: Colloidal silicon dioxide, corn starch, dibasic calcium phosphate, lactose monohydrate, magnesium stearate, and sodium starch glycolate. In addition, the 1 mg also contains FD&C blue no. 1 aluminum lake and D&C red no. 27 aluminum lake. The 2 mg also contains FD&C blue no. 1 aluminum lake and FD&C yellow no. 5 (tartrazine) aluminum lake.

Estradiol tablets, USP for oral administration contains 0.5, 1 or 2 mg of micronized estradiol, USP per tablet. Estradiol, USP (17β-estradiol) is a white, crystalline solid, chemically described as estra-1,3,5,(10)-triene-3, 17β-diol. The structural formula is: In addition, each tablet for oral administration contains the following inactive ingredients: lactose monohydrate, magnesium stearate, microcrystalline cellulose and sodium starch glycolate. Structure formula.jpg

ESTRADIOL TRANSDERMAL SYSTEM contains estradiol in a multipolymeric adhesive. The system is designed to release estradiol continuously upon application to intact skin. Five dosage strengths of ESTRADIOL TRANSDERMAL SYSTEM are available to provide nominal in vivo delivery rates of 0.025, 0.0375, 0.05, 0.075, or 0.1 mg of estradiol per day via the skin. Each corresponding system has an active surface area of 1.65, 2.48, 3.30, 4.95, or 6.6 cm 2 and contains 0.41, 0.62, 0.83, 1.24, or 1.65 mg of estradiol USP, respectively. The composition of the systems per unit area is identical. Estradiol USP is a white, crystalline powder, chemically described as estra-1,3,5(10)-triene-3,17β-diol. The structural formula is The molecular formula of estradiol is C 18 H 24 O 2 . The molecular weight is 272.39 ESTRADIOL TRANSDERMAL SYSTEM is comprised of three layers. Proceeding from the visible surface toward the surface attached to the skin, these layers are (1) a polyolefin laminate backing (2) an adhesive formulation containing estradiol, acrylic adhesive, silicone adhesive, oleyl alcohol, NF, povidone, USP and dipropylene glycol, and (3) a polyester release liner which is attached to the adhesive surface and must be removed before the system can be used. The active component of the system is estradiol. The remaining components of the system are pharmacologically inactive. chemical structure layers

Estradiol Tablets USP for oral administration contains 0.5, 1 or 2 mg of micronized estradiol, USP per tablet. Estradiol, USP (17β-estradiol) is a white, crystalline solid, chemically described as estra-1,3,5,(10)-triene-3, 17β-diol. The structural formula is: C 18 H 24 O 2 M.W. 272.38 Inactive Ingredients: Colloidal silicon dioxide, corn starch, dibasic calcium phosphate, lactose monohydrate, magnesium stearate, and sodium starch glycolate. In addition, the 1 mg also contains FD&C blue no. 1 aluminum lake and D&C red no. 27 aluminum lake. The 2 mg also contains FD&C blue no. 1 aluminum lake and FD&C yellow no. 5 (tartrazine) aluminum lake. structual formula

Estradiol Tablets USP for oral administration contains 0.5, 1 or 2 mg of micronized estradiol, USP per tablet. Estradiol, USP (17β-estradiol) is a white to practically white powder, chemically described as estra-1,3,5,(10)-triene-3, 17β-diol. The structural formula is: C 18 H 24 O 2 M.W. 272.38 Inactive Ingredients: Colloidal silicon dioxide, corn starch, microcrystalline cellulose, lactose monohydrate, magnesium stearate, and sodium starch glycolate. In addition, the 1 mg also contains FD&C blue no. 1 aluminum lake and D&C red no. 27 aluminum lake. The 2 mg also contains FD&C blue no. 1 aluminum lake and D&C yellow no. 10 aluminum lake. FDA approved dissolution test specifications differ from USP. structure

Estradiol Tablets, USP for oral administration contains 0.5, 1 or 2 mg of micronized estradiol, USP per tablet. Estradiol, USP (17β-estradiol) is a white, crystalline solid, chemically described as estra-1,3,5,(10)-triene-3, 17β-diol. The structural formula is: C 18 H 24 O 2 M.W. 272.38 Inactive Ingredients: Colloidal silicon dioxide, corn starch, dibasic calcium phosphate, lactose monohydrate, magnesium stearate, and sodium starch glycolate. In addition, the 1 mg also contains FD&C blue no. 1 aluminum lake and D&C red no. 27 aluminum lake. The 2 mg also contains FD&C blue no. 1 aluminum lake and FD&C yellow no. 5 (tartrazine) aluminum lake. structual formula

Each gram of estradiol vaginal cream USP, 0.01% contains estradiol, USP hemihydrate equivalent to 0.1 mg estradiol in a nonliquefying base containing edetate disodium, hypromellose, methylparaben, mono- and di-glycerides, propylene glycol, purified water, sodium lauryl sulfate, stearyl alcohol, tert -butylhydroquinone and white ceresin wax. Estradiol is chemically described as Estra-1,3,5(10)-triene-3,17β-diol-hemihydrate. It has an empirical formula of C 18 H 24 O 2 • ½ H 2 O and molecular weight of 281.39. The structural formula is: Estradiol Structural Formula

Climara (estradiol transdermal system), is designed to release estradiol continuously upon application to intact skin. Six (6.5, 9.375, 12.5, 15, 18.75 and 25 cm 2 ) systems are available to provide nominal in vivo delivery of 0.025, 0.0375, 0.05, 0.06, 0.075 or 0.1 mg respectively of estradiol per day. The period of use is 7 days. Each system has a contact surface area of either 6.5, 9.375, 12.5, 15, 18.75 or 25 cm 2 , and contains 2, 2.85, 3.8, 4.55, 5.7 or 7.6 mg of estradiol USP respectively. The composition of the systems per unit area is identical. Estradiol USP is a white, crystalline powder, chemically described as estra-1,3,5(10)-triene-3, 17β-diol. It has an empirical formula of C 18 H 24 O 2 and molecular weight of 272.38. The structural formula is: The Climara transdermal system comprises three layers. Proceeding from the visible surface toward the surface attached to the skin, these layers are: 1. A translucent polyethylene film. 2. An acrylate adhesive matrix containing estradiol USP. 3. A protective liner of siliconized or fluoropolymer-coated polyester film is attached to the adhesive surface and must be removed before the system can be used. The active component of the transdermal system is estradiol. The remaining components of the transdermal system (acrylate copolymer adhesive, fatty acid esters, and polyethylene backing) are pharmacologically inactive. Chemical Structure Patch Diagram

Divigel (estradiol gel) 0.1 percent, is a clear, colorless gel, which is odorless when dry. It is designed to deliver sustained circulating concentrations of estradiol when applied once daily to the skin. The gel is applied to a small area (200 cm 2 ) of the thigh in a thin layer. Divigel is available in five doses of 0.25, 0.5, 0.75, 1.0, and 1.25 grams for topical application (corresponding to 0.25, 0.5, 0.75, 1.0, and 1.25 mg estradiol, respectively). The active component of the topical gel is estradiol. Estradiol is a white crystalline powder, chemically described as estra-1,3,5(10)-triene-3,17ß-diol. It has an empirical formula of C 18 H 24 O 2 and molecular weight of 272.39. The structural formula is: Divigel Chemical Structure The remaining components of the gel (carbomer, ethanol, propylene glycol, purified water, and triethanolamine) are pharmacologically inactive. Divigel Chemical Structure

DOTTI (estradiol transdermal system, USP) contains estradiol, USP in a multipolymeric adhesive. The system is designed to release estradiol, USP continuously upon application to intact skin. Five dosage strengths of DOTTI are available to provide nominal in vivo delivery rates of 0.025, 0.0375, 0.05, 0.075, or 0.1 mg of estradiol, USP per day via the skin. Each corresponding system has an active surface area of 1.89, 2.83, 3.78, 5.66, or 7.55 cm 2 and contains 0.314, 0.470, 0.627, 0.940, or 1.253 mg of estradiol USP, respectively. The composition of the systems per unit area is identical. Estradiol, USP is a white to practically white powder, chemically described as estra-1,3,5 (10)- triene-3,17β-diol. The structural formula is: The molecular formula of estradiol, USP is C 18 H 24 0 2 . The molecular weight is 272.39 g/mol. DOTTI is comprised of 3 layers. Proceeding from the visible surface toward the surface attached to the skin, these layers are (1) polyester and ethylene vinyl acetate copolymer film (2) an adhesive formulation containing estradiol USP, acrylic adhesive, silicone adhesive, oleyl alcohol, NF, povidone, USP and dipropylene glycol, and (3) a polyester release liner which is attached to the adhesive surface and must be removed before the system can be used. The active component of the system is estradiol, USP. The remaining components of the system are pharmacologically inactive. FDA approved acceptance criteria for dissolution test specifications differ from USP.

DOTTI (estradiol transdermal system, USP) contains estradiol, USP in a multipolymeric adhesive. The system is designed to release estradiol, USP continuously upon application to intact skin. Five dosage strengths of DOTTI are available to provide nominal in vivo delivery rates of 0.025, 0.0375, 0.05, 0.075, or 0.1 mg of estradiol, USP per day via the skin. Each corresponding system has an active surface area of 1.89, 2.83, 3.78, 5.66, or 7.55 cm 2 and contains 0.314, 0.470, 0.627, 0.940, or 1.253 mg of estradiol USP, respectively. The composition of the systems per unit area is identical. Estradiol, USP is a white to practically white powder, chemically described as estra-1,3,5 (10)- triene-3,17β-diol. The structural formula is: The molecular formula of estradiol, USP is C 18 H 24 0 2 . The molecular weight is 272.39 g/mol. DOTTI is comprised of 3 layers. Proceeding from the visible surface toward the surface attached to the skin, these layers are (1) polyester and ethylene vinyl acetate copolymer film (2) an adhesive formulation containing estradiol USP, acrylic adhesive, silicone adhesive, oleyl alcohol, NF, povidone, USP and dipropylene glycol, and (3) a polyester release liner which is attached to the adhesive surface and must be removed before the system can be used. The active component of the system is estradiol, USP. The remaining components of the system are pharmacologically inactive. FDA approved acceptance criteria for dissolution test specifications differ from USP.

DOTTI (estradiol transdermal system, USP) contains estradiol, USP in a multipolymeric adhesive. The system is designed to release estradiol, USP continuously upon application to intact skin. Five dosage strengths of DOTTI are available to provide nominal in vivo delivery rates of 0.025, 0.0375, 0.05, 0.075, or 0.1 mg of estradiol, USP per day via the skin. Each corresponding system has an active surface area of 1.89, 2.83, 3.78, 5.66, or 7.55 cm 2 and contains 0.314, 0.470, 0.627, 0.940, or 1.253 mg of estradiol USP, respectively. The composition of the systems per unit area is identical. Estradiol, USP is a white to practically white powder, chemically described as estra-1,3,5 (10)- triene-3,17β-diol. The structural formula is: The molecular formula of estradiol, USP is C 18 H 24 0 2 . The molecular weight is 272.39 g/mol. DOTTI is comprised of 3 layers. Proceeding from the visible surface toward the surface attached to the skin, these layers are (1) polyester and ethylene vinyl acetate copolymer film (2) an adhesive formulation containing estradiol USP, acrylic adhesive, silicone adhesive, oleyl alcohol, NF, povidone, USP and dipropylene glycol, and (3) a polyester release liner which is attached to the adhesive surface and must be removed before the system can be used. The active component of the system is estradiol, USP. The remaining components of the system are pharmacologically inactive. FDA approved acceptance criteria for dissolution test specifications differ from USP.

DOTTI (estradiol transdermal system, USP) contains estradiol, USP in a multipolymeric adhesive. The system is designed to release estradiol, USP continuously upon application to intact skin. Five dosage strengths of DOTTI are available to provide nominal in vivo delivery rates of 0.025, 0.0375, 0.05, 0.075, or 0.1 mg of estradiol, USP per day via the skin. Each corresponding system has an active surface area of 1.89, 2.83, 3.78, 5.66, or 7.55 cm 2 and contains 0.314, 0.470, 0.627, 0.940, or 1.253 mg of estradiol USP, respectively. The composition of the systems per unit area is identical. Estradiol, USP is a white to practically white powder, chemically described as estra-1,3,5 (10)- triene-3,17β-diol. The structural formula is: The molecular formula of estradiol, USP is C 18 H 24 0 2 . The molecular weight is 272.39 g/mol. DOTTI is comprised of 3 layers. Proceeding from the visible surface toward the surface attached to the skin, these layers are (1) polyester and ethylene vinyl acetate copolymer film (2) an adhesive formulation containing estradiol USP, acrylic adhesive, silicone adhesive, oleyl alcohol, NF, povidone, USP and dipropylene glycol, and (3) a polyester release liner which is attached to the adhesive surface and must be removed before the system can be used. The active component of the system is estradiol, USP. The remaining components of the system are pharmacologically inactive. FDA approved acceptance criteria for dissolution test specifications differ from USP.

DOTTI (estradiol transdermal system, USP) contains estradiol, USP in a multipolymeric adhesive. The system is designed to release estradiol, USP continuously upon application to intact skin. Five dosage strengths of DOTTI are available to provide nominal in vivo delivery rates of 0.025, 0.0375, 0.05, 0.075, or 0.1 mg of estradiol, USP per day via the skin. Each corresponding system has an active surface area of 1.89, 2.83, 3.78, 5.66, or 7.55 cm 2 and contains 0.314, 0.470, 0.627, 0.940, or 1.253 mg of estradiol USP, respectively. The composition of the systems per unit area is identical. Estradiol, USP is a white to practically white powder, chemically described as estra-1,3,5 (10)- triene-3,17β-diol. The structural formula is: The molecular formula of estradiol, USP is C 18 H 24 0 2 . The molecular weight is 272.39 g/mol. DOTTI is comprised of 3 layers. Proceeding from the visible surface toward the surface attached to the skin, these layers are (1) polyester and ethylene vinyl acetate copolymer film (2) an adhesive formulation containing estradiol USP, acrylic adhesive, silicone adhesive, oleyl alcohol, NF, povidone, USP and dipropylene glycol, and (3) a polyester release liner which is attached to the adhesive surface and must be removed before the system can be used. The active component of the system is estradiol, USP. The remaining components of the system are pharmacologically inactive. FDA approved acceptance criteria for dissolution test specifications differ from USP. 1 2

DOTTI (estradiol transdermal system, USP) contains estradiol, USP in a multipolymeric adhesive. The system is designed to release estradiol, USP continuously upon application to intact skin. Five dosage strengths of DOTTI are available to provide nominal in vivo delivery rates of 0.025, 0.0375, 0.05, 0.075, or 0.1 mg of estradiol, USP per day via the skin. Each corresponding system has an active surface area of 1.89, 2.83, 3.78, 5.66, or 7.55 cm 2 and contains 0.314, 0.470, 0.627, 0.940, or 1.253 mg of estradiol USP, respectively. The composition of the systems per unit area is identical. Estradiol, USP is a white to practically white powder, chemically described as estra-1,3,5 (10)- triene-3,17β-diol. The structural formula is: The molecular formula of estradiol, USP is C 18 H 24 0 2 . The molecular weight is 272.39 g/mol. DOTTI is comprised of 3 layers. Proceeding from the visible surface toward the surface attached to the skin, these layers are (1) polyester and ethylene vinyl acetate copolymer film (2) an adhesive formulation containing estradiol USP, acrylic adhesive, silicone adhesive, oleyl alcohol, NF, povidone, USP and dipropylene glycol, and (3) a polyester release liner which is attached to the adhesive surface and must be removed before the system can be used. The active component of the system is estradiol, USP. The remaining components of the system are pharmacologically inactive. FDA approved acceptance criteria for dissolution test specifications differ from USP.

ELESTRIN (estradiol gel) contains 0.06% of estradiol, in a colorless, non-staining hydroalcoholic gel base. One pump actuation delivers ELESTRIN in a unit dose of 0.52 mg of estradiol in 0.87 g of gel. Estradiol is a white crystalline powder, chemically described as estra-1,3,5(10)-triene-3,17-diol, (17β)-. It has a molecular formula of C 18 H 24 O 2 •½H 2 O and molecular weight of 281.4. The structural formula is: The active component of ELESTRIN is estradiol. The remaining components of the gel (ethanol, propylene glycol, diethylene glycol monoethyl ether, carbomer homopolymer type C, triethanolamine, edetate disodium, and purified water) are pharmacologically inactive. Elestrin Structural Formula

Each gram of ESTRACE (estradiol vaginal cream USP 0.01%) contains 0.1 mg estradiol in a nonliquefying base containing purified water, propylene glycol, stearyl alcohol, white ceresin wax, mono- and di-glycerides, hypromellose 2208 (4000 cps), sodium lauryl sulfate, methylparaben, edetate di-sodium and tertiary -butylhydroquinone. Estradiol is chemically described as estra-1,3,5(10)-triene-3, 17(beta)-diol. It has an empirical formula of C 18 H 24 O 2 and molecular weight of 272.37. The structural formula is: The structural formula for ESTRACE (estradiol vaginal cream, USP, 0.01%) contains 0.1 mg estradiol in a nonliquefying base containing purified water, propylene glycol, stearyl alcohol, white ceresin wax, mono- and di-glycerides, hypromellose 2208 (4000 cps), sodium lauryl sulfate, methylparaben, edetate di-sodium and tertiary-butylhydroquinone. Estradiol is chemically described as estra-1,3,5(10)-triene-3, 17(beta)-diol. It has an empirical formula of C18H24O2 and molecular weight of 272.37.

Each gram of ESTRACE (estradiol vaginal cream USP 0.01%) contains 0.1 mg estradiol in a nonliquefying base containing purified water, propylene glycol, stearyl alcohol, white ceresin wax, mono- and di-glycerides, hypromellose 2208 (4000 cps), sodium lauryl sulfate, methylparaben, edetate di-sodium and tertiary -butylhydroquinone. Estradiol is chemically described as estra-1,3,5(10)-triene-3, 17(beta)-diol. It has an empirical formula of C 18 H 24 O 2 and molecular weight of 272.37. The structural formula is: The structural formula for ESTRACE (estradiol vaginal cream, USP, 0.01%) contains 0.1 mg estradiol in a nonliquefying base containing purified water, propylene glycol, stearyl alcohol, white ceresin wax, mono- and di-glycerides, hypromellose 2208 (4000 cps), sodium lauryl sulfate, methylparaben, edetate di-sodium and tertiary-butylhydroquinone. Estradiol is chemically described as estra-1,3,5(10)-triene-3, 17(beta)-diol. It has an empirical formula of C18H24O2 and molecular weight of 272.37.

Estradiol tablets, USP for oral administration contains 0.5, 1 or 2 mg of micronized estradiol, USP per tablet. Estradiol, USP (17β-estradiol) is a white, crystalline solid, chemically described as estra-1,3,5,(10)-triene-3, 17β-diol. The structural formula is: In addition, each tablet for oral administration contains the following inactive ingredients: lactose monohydrate, magnesium stearate, microcrystalline cellulose and sodium starch glycolate. Structure formula.jpg

Estradiol Tablets USP for oral administration contains 0.5, 1 or 2 mg of micronized estradiol, USP per tablet. Estradiol, USP (17β-estradiol) is a white to practically white powder, chemically described as estra-1,3,5,(10)-triene-3, 17β-diol. The structural formula is: C 18 H 24 O 2 M.W. 272.38 Inactive Ingredients: Colloidal silicon dioxide, corn starch, microcrystalline cellulose, lactose monohydrate, magnesium stearate, and sodium starch glycolate. In addition, the 1 mg also contains FD&C blue no. 1 aluminum lake and D&C red no. 27 aluminum lake. The 2 mg also contains FD&C blue no. 1 aluminum lake and D&C yellow no. 10 aluminum lake. FDA approved dissolution test specifications differ from USP. structure

Estradiol Tablets, USP for oral administration contains 0.5, 1 or 2 mg of micronized estradiol, USP per tablet. Estradiol, USP (17β-estradiol) is a white, crystalline solid, chemically described as estra-1,3,5,(10)-triene-3, 17β-diol. The structural formula is: C 18 H 24 O 2 M.W. 272.38 Inactive Ingredients: Colloidal silicon dioxide, corn starch, dibasic calcium phosphate, lactose monohydrate, magnesium stearate, and sodium starch glycolate. In addition, the 1 mg also contains FD&C blue no. 1 aluminum lake and D&C red no. 27 aluminum lake. The 2 mg also contains FD&C blue no. 1 aluminum lake and FD&C yellow no. 5 (tartrazine) aluminum lake. structual formula

Estradiol Tablets, USP for oral administration contains 0.5, 1 or 2 mg of micronized estradiol, USP per tablet. Estradiol, USP (17β-estradiol) is a white, crystalline solid, chemically described as estra-1,3,5,(10)-triene-3, 17β-diol. The structural formula is: C 18 H 24 O 2 M.W. 272.38 Inactive Ingredients: Colloidal silicon dioxide, corn starch, dibasic calcium phosphate, lactose monohydrate, magnesium stearate, and sodium starch glycolate. In addition, the 1 mg also contains FD&C blue no. 1 aluminum lake and D&C red no. 27 aluminum lake. The 2 mg also contains FD&C blue no. 1 aluminum lake and FD&C yellow no. 5 (tartrazine) aluminum lake. structual formula

Estradiol Tablets, USP for oral administration contains 0.5, 1 or 2 mg of micronized estradiol, USP per tablet. Estradiol, USP (17β-estradiol) is a white, crystalline solid, chemically described as estra-1,3,5,(10)-triene-3, 17β-diol. The structural formula is: C 18 H 24 O 2 M.W. 272.38 Inactive Ingredients: Colloidal silicon dioxide, corn starch, dibasic calcium phosphate, lactose monohydrate, magnesium stearate, and sodium starch glycolate. In addition, the 1 mg also contains FD&C blue no. 1 aluminum lake and D&C red no. 27 aluminum lake. The 2 mg also contains FD&C blue no. 1 aluminum lake and FD&C yellow no. 5 (tartrazine) aluminum lake. structual formula

Estradiol Tablets, USP for oral administration contains 0.5, 1 or 2 mg of micronized estradiol, USP per tablet. Estradiol, USP (17β-estradiol) is a white, crystalline solid, chemically described as estra-1,3,5,(10)-triene-3, 17β-diol. The structural formula is: C 18 H 24 O 2 M.W. 272.38 Inactive Ingredients: Colloidal silicon dioxide, corn starch, dibasic calcium phosphate, lactose monohydrate, magnesium stearate, and sodium starch glycolate. In addition, the 1 mg also contains FD&C blue no. 1 aluminum lake and D&C red no. 27 aluminum lake. The 2 mg also contains FD&C blue no. 1 aluminum lake and FD&C yellow no. 5 (tartrazine) aluminum lake. structual formula

Estradiol Gel, 0.1% is a clear, colorless smooth gel, free from visible particulate matter. It is designed to deliver sustained circulating concentrations of estradiol when applied once daily to the skin. The gel is applied to a small area (200 cm 2 ) of the thigh in a thin layer. Estradiol gel is available in five doses of 0.25, 0.5, 0.75, 1.0, and 1.25 grams for topical application (corresponding to 0.25, 0.5, 0.75, 1.0, and 1.25 mg estradiol, respectively). The active component of the topical gel is estradiol. Estradiol is a white crystalline powder, chemically described as estra-1,3,5(10)-triene-3,17ß-diol. It has an empirical formula of C 18 H 24 O 2 and molecular weight of 272.39. The structural formula is: The remaining components of the gel (carbomer, alcohol [62%], propylene glycol, purified water, and trolamine) are pharmacologically inactive. estradiol-structure

Estradiol transdermal system, USP continuous delivery (once-weekly) is designed to release estradiol continuously upon application to intact skin. Six (7.75, 11.625, 15.5, 18.6, 23.25 and 31 cm 2 ) systems are available to provide nominal in vivo delivery of 0.025, 0.0375, 0.05, 0.06, 0.075 or 0.1 mg respectively of estradiol per day. The period of use is 7 days. Each system has a contact surface area of either 7.75, 11.625, 15.5, 18.6, 23.25 or 31 cm 2 , and contains estradiol, USP hemihydrate equivalent to 0.97, 1.46, 1.94, 2.33, 2.91 or 3.88 mg of estradiol, respectively. The composition of the systems per unit area is identical. Estradiol, USP hemihydrate is a white, crystalline powder, chemically described as Estra-1,3,5(10)-triene-3,17β-diol-hemihydrate. It has a molecular formula of C 18 H 24 O 2 • ½ H 2 O and molecular weight of 281.39. The structural formula is: Meets USP Drug Release Test 2. The estradiol transdermal system continuous delivery (once-weekly) comprises four layers. Proceeding from the visible surface toward the surface attached to the skin, these layers are: (1) A foam backing with adhesive layer (2) A polyester film (3) An acrylate adhesive matrix containing estradiol. (4) A protective liner of siliconized polyester film is attached to the adhesive surface and must be removed before the system can be used. The active component of the transdermal system is estradiol. The remaining components of the transdermal system (propylene glycol, povidone, anhydrous colloidal silicon dioxide, pressure sensitive acrylic adhesive, copolymer foam, polyester film, and brown ink) are pharmacologically inactive. Estradiol Structural Formula Transdermal Parts

Estradiol tablets, USP for oral administration contains 0.5, 1 or 2 mg of micronized estradiol, USP per tablet. Estradiol, USP (17β-estradiol) is a white, crystalline solid, chemically described as estra-1,3,5,(10)-triene-3, 17β-diol. The structural formula is: In addition, each tablet for oral administration contains the following inactive ingredients: lactose monohydrate, magnesium stearate, microcrystalline cellulose and sodium starch glycolate. Structure formula.jpg

Each gram of estradiol vaginal cream, USP, 0.01% contains 0.1 mg estradiol (as estradiol hemihydrate) in a nonliquefying base containing propylene glycol, methylparaben, sodium lauryl sulfate, mono- and di-glycerides, stearyl alcohol, ceresin wax, tert-butylhydroquinone, disodium EDTA, hypromellose, and purified water. Estradiol hemihydrate is chemically described as estra-1,3,5(10)-triene-3,17β-diol hemihydrate. It has an empirical formula of C 18 H 24 O 2 . ½H 2 O and molecular weight of 272.37. The structural formula is: structure

Each gram of estradiol vaginal cream, USP 0.01% contains 0.1 mg estradiol (as estradiol hemihydrate) in a nonliquefying base containing propylene glycol, methylparaben, sodium lauryl sulfate, mono- and di-glycerides, stearyl alcohol, ceresin wax, tert-butylhydroquinone, disodium EDTA, hypromellose, and purified water. Estradiol hemihydrate is chemically described as estra-1,3,5(10)-triene-3,17β-diol hemihydrate. It has an empirical formula of C 18 H 24 O 2 . ½H 2 O and molecular weight of 281.39. The structural formula is: structure

Each gram of estradiol vaginal cream USP, 0.01% contains 0.1 mg estradiol (as estradiol hemihydrate) in a nonliquefying base containing propylene glycol, methylparaben, sodium lauryl sulfate, mono- and diglycerides, stearyl alcohol, ceresin wax, tert-butylhydroquinone, disodium EDTA, hypromellose, and purified water. Estradiol hemihydrate is chemically described as estra-1,3,5(10)-triene-3,17 β-diol hemihydrate. It has an empirical formula of C 18 H 24 O 2 . ½H O and molecular weight of 272.37. The structural formula is: formula-image

Estradiol vaginal inserts USP, 10 mcg are round, white to off-white, film-coated tablets debossed with “S” on one side and “10” on other side containing 10.3 mcg of estradiol hemihydrate USP equivalent to 10 mcg of estradiol USP. Each insert of estradiol vaginal inserts USP, 10 mcg contains the following excipients: corn starch, hypromellose, lactose monohydrate and magnesium stearate. Each estradiol vaginal inserts, USP is 6 mm in diameter and is placed in a disposable applicator. Each insert-filled applicator is packaged separately in a blister pack. Estradiol vaginal inserts, USP are used intravaginally. When the insert comes in contact with the vaginal mucosa, estradiol is released into the vagina. Estradiol hemihydrate is a white or creamy white, small crystals or crystalline powder, chemically described as estra-1,3,5 (10)-triene-3,17β-diol. The chemical formula is C 18 H 24 O 2 • ½ H 2 O with a molecular weight of 281.4. The structural formula is: FDA approved IVR method and acceptance criteria differs from the USP IVR method and acceptance criteria str

Estradiol vaginal inserts USP, 10 mcg are round, white to off-white, film-coated tablets debossed with “S” on one side and “10” on other side containing 10.3 mcg of estradiol hemihydrate USP equivalent to 10 mcg of estradiol USP. Each insert of estradiol vaginal inserts USP, 10 mcg contains the following excipients: corn starch, hypromellose, lactose monohydrate and magnesium stearate. Each estradiol vaginal inserts, USP is 6 mm in diameter and is placed in a disposable applicator. Each insert-filled applicator is packaged separately in a blister pack. Estradiol vaginal inserts, USP are used intravaginally. When the insert comes in contact with the vaginal mucosa, estradiol is released into the vagina. Estradiol hemihydrate is a white or creamy white, small crystals or crystalline powder, chemically described as estra-1,3,5 (10)-triene-3,17β-diol. The chemical formula is C 18 H 24 O 2 • ½ H 2 O with a molecular weight of 281.4. The structural formula is: FDA approved IVR method and acceptance criteria differs from the USP IVR method and acceptance criteria str

MYFEMBREE tablets for oral administration contain a fixed-dose combination of relugolix 40 mg, estradiol 1 mg, and norethindrone acetate 0.5 mg as active ingredients. Relugolix is a non-peptide small molecule, GnRH receptor antagonist. It is a white to off white to slightly yellow solid and is sparingly soluble in water. The chemical name is N-(4-{1-[(2,6-difluorophenyl)methyl]-5-[(dimethylamino)methyl]-3-(6-methoxypyridazin-3-yl)-2,4-dioxo-1,2,3,4-tetrahydrothieno[2,3-d]pyrimidin-6-yl}phenyl)-N-methoxyurea with the empirical formula of C 29 H 27 F 2 N 7 O 5 S and a molecular weight of 623.63. The structural formula is: Estradiol (E2), an estrogen, is present as the hemihydrate (C 18 H 24 O 2 •½H 2 O) which is a white or almost white crystalline powder. Its chemical name is estra-1, 3, 5 ( 10 )-triene-3, 17β-diol with the empirical formula of C 18 H 24 O 2 and a molecular weight of 272.4. The structural formula is: Norethindrone acetate (NETA), a progestin, is a white or yellowish-white crystalline powder. Its chemical name is 17-Hydroxy-19-nor-17α-pregn-4-en-20-yn-3-one acetate with the empirical formula of C 22 H 28 O 3 and a molecular weight of 340.5. The structural formula is: Each MYFEMBREE (relugolix, estradiol, and norethindrone acetate) film-coated tablet contains the following inactive ingredients: hydroxypropyl cellulose, hypromellose, iron oxide yellow, lactose monohydrate, mannitol, magnesium stearate, sodium starch glycolate, titanium dioxide, and triacetin. Relugolix Structural Formula Estradiol Structural Formula Norethindrone Acetate Structural Formula