erythromycin - Medications

Erythromycin tablets, USP are an antibacterial product containing erythromycin, USP in a unique, nonenteric film coating for oral administration. Erythromycin tablets are available in two strengths containing 250 mg or 500 mg erythromycin base. Erythromycin is produced by a strain of Saccharopolyspora erythraea (formerly Streptomyces erythraeus ) and belongs to the macrolide group of antibiotics. It is basic and readily forms salts with acids. Erythromycin is a white to off-white powder, slightly soluble in water, and soluble in alcohol, chloroform, and ether. Erythromycin is known chemically as (3R*, 4S*, 5S*, 6R*, 7R*, 9R*, 11R*, 12R*, 13S*, 14R*)-4-[(2,6-dideoxy-3-C-methyl-3-O-methyl-α-L- ribo -hexopyranosyl)oxy]-14-ethyl-7,12,13-trihydroxy-3,5,7,9,11,13-hexamethyl-6-[[3,4,6-trideoxy-3-(dimethylamino)- β-D- xylo –hexopyranosyl]oxy]oxacyclotetradecane-2,10-dione. The molecular formula is C 37 H 67 NO 13 , and the molecular weight is 733.94. The structural formula is: chemical-structure Inactive Ingredients Colloidal silicon dioxide, croscarmellose sodium, hydroxypropyl cellulose, hydroxypropyl methyl cellulose, magnesium stearate, mannitol, pregelatinized maize starch, sodium citrate, talc, calcium silicate, methacrylic acid & ethyl acetate copolymer, poloxamer, sodium bicarbonate, sodium lauryl sulfate, titanium dioxide.

Erythromycin ophthalmic ointment, USP belongs to the macrolide group of antibiotics. The sterile ophthalmic ointment flows freely over the conjunctiva. Erythromycin base, as crystals or powder, is slightly soluble in water, moderately soluble in ether, and readily soluble in alcohol or chloroform. Erythromycin is an antibiotic produced from a strain of Streptomyces erythraeus . It is basic and readily forms a salt when combined with an acid. It has the following structural formula: Molecular Formula: C 37 H 67 NO 13 Mol. Wt. 733.94 Chemical Name: ((3R ● ,4S ● ,5S ● ,6R ● ,7R ● ,9R ● ,11R ● ,12R ● ,13S ● ,14R ● )-4-[(2,6-dideoxy-3- C -methyl-3- 0 -methyl-α-L- ribo -hexopyranosyl)oxy]-14-ethyl-7,12,13-trihydroxy-3,5,7,9,11,13-hexamethyl-6-[[3,4,6-trideoxy-3-(dimethylamino)- β -D- xylo -hexopyranosyl]oxy]oxacyclotetradecane-2,10-dione) Each gram contains: Active: erythromycin USP, 5 mg (0.5%); Inactives: mineral oil and white petrolatum. ChemStructure

Erythromycin ophthalmic ointment, USP belongs to the macrolide group of antibiotics. The sterile ophthalmic ointment flows freely over the conjunctiva. Erythromycin base, as crystals or powder, is slightly soluble in water, moderately soluble in ether, and readily soluble in alcohol or chloroform. Erythromycin is an antibiotic produced from a strain of Streptomyces erythraeus . It is basic and readily forms a salt when combined with an acid. It has the following structural formula: Molecular Formula: C 37 H 67 NO 13 Mol. Wt. 733.94 Chemical Name: ((3R ● ,4S ● ,5S ● ,6R ● ,7R ● ,9R ● ,11R ● ,12R ● ,13S ● ,14R ● )-4-[(2,6-dideoxy-3- C -methyl-3- 0 -methyl-α-L- ribo -hexopyranosyl)oxy]-14-ethyl-7,12,13-trihydroxy-3,5,7,9,11,13-hexamethyl-6-[[3,4,6-trideoxy-3-(dimethylamino)- β -D- xylo -hexopyranosyl]oxy]oxacyclotetradecane-2,10-dione) Each gram contains: Active: erythromycin USP, 5 mg (0.5%); Inactives: mineral oil and white petrolatum. ChemStructure

Erythromycin and Benzoyl Peroxide Topical Gel USP contains erythromycin [(3R*, 4S*, 5S*, 6R*, 7R*, 9R*, 11R*, 12R*, 13S*, 14R*)-4-[(2,6-Dideoxy-3- C -methyl-3- 0 -methyl-α-L- ribo -hexopyranosyl)-oxy]-14-ethyl-7,12,13-trihydroxy-3,5,7,9,11,13-hexamethyl-6-[[3,4,6-trideoxy-3-dimethylamino)-β-D- xylo -hexopyranosyl]oxy]oxacyclotetradecane-2,10-dione]. Erythromycin is a macrolide antibiotic produced from a strain of Saccharopolyspora erythraea (formerly Streptomyces erythreus ). It is a base and readily forms salts with acids. Chemically, erythromycin is (C 37 H 67 NO 13 ). It has the following structural formula: Erythromycin has the molecular weight of 733.94. It is a white crystalline powder and has a solubility of approximately 1 mg/mL in water and is soluble in alcohol at 25˚C. Erythromycin and Benzoyl Peroxide Topical Gel USP also contains benzoyl peroxide for topical use. Benzoyl peroxide is an antibacterial and keratolytic agent. Chemically, benzoyl peroxide is (C 14 H 10 O 4 ). It has the following structural formula: Benzoyl peroxide has the molecular weight of 242.23. It is a white granular powder and is sparingly soluble in water and alcohol and soluble in acetone, chloroform and ether. Each gram of Erythromycin and Benzoyl Peroxide Topical Gel USP contains, as dispensed, 30 mg (3%) of erythromycin and 50 mg (5%) of benzoyl peroxide in a base of purified water USP, carbomer 940 NF, ethyl alcohol 20%, sodium hydroxide NF, docusate sodium and fragrance. LABEL LABEL 2

Erythromycin topical solution, USP 2% contains erythromycin, USP for topical dermatologic use. Erythromycin is a macrolide antibiotic produced from a strain of Saccaropolyspora erythraea (formerly Streptomyces erythreus ). It is a base and readily forms salts with acids. Chemically, erythromycin is: (3 R *,4 S *,5 S *,6 R *,7 R *,9 R *,11 R *,12 R *,13 S *,14 R *)-4-[(2,6-Dideoxy-3- C -methyl-3- 0 -methyl-α-L- ribo -hexopyranosyl)oxy]-14-ethyl-7,12,13-trihydroxy -3,5,7,9,11,13-hexamethyl-6-[[3,4,6-trideoxy-3-(dimethylamino)-ß-D- xylo -hexopyranosyl]oxy]oxacyclotetradecane-2,10-dione. It has the following structural formula: Molecular Formula: C 37 H 67 NO 13 Molecular Weight: 733.94 Erythromycin, USP is a white or slightly yellow, crystalline powder that is soluble in water, alcohol, chloroform and in ether. Each mL of erythromycin topical solution, USP 2% contains 20 mg of erythromycin base in a vehicle consisting of alcohol (66%), citric acid, and propylene glycol. formula