jvet pharmaceuticals llc - Medication Listings

The active ingredient in Gabapentin oral solution is Gabapentin, which has the chemical name 1-(aminomethyl)cyclohexaneacetic acid. The molecular formula of Gabapentin is C 9 H 17 NO 2 and the molecular weight is 171.24. The structural formula of Gabapentin is: Gabapentin is a white to off-white crystalline solid with a pK a1 of 3.7 and a pK a2 of 10.7. It is freely soluble in water and both basic and acidic aqueous solutions. The log of the partition coefficient (n-octanol/0.05M phosphate buffer) at pH 7.4 is –1.25. Gabapentin Oral Solution contains 250 mg of Gabapentin per 5 mL (50 mg per mL) and the following inactive ingredients are glycerin, hydrochloric acid, methylparaben, propylparaben, acesulfame potassium, saccharin sodium, banana flavor and purified water. structure

Doxycycline for Injection, USP is a sterile, lyophilized powder prepared from a solution of doxycycline hyclate, ascorbic acid and mannitol in Water for Injection. Doxycycline hyclate is a broad spectrum antibiotic derived from oxytetracycline. It is meant for INTRAVENOUS use only after reconstitution. Doxycycline hyclate is a yellowish crystalline powder which is chemically designated 4-(Dimethylamino)-1,4,4a,5,5a,6,11,12a-octahydro-3,5,10,12,12a-pentahydroxy-6-methyl-1,11-demonohydrochloride, compound with ethyl alcohol (2:1), monohydrate. It has the following structural formula: Doxycycline hyclate is soluble in water and chars at 201°C without melting. The base doxycycline has a high degree of lipid solubility and a low affinity for calcium binding. It is highly stable in normal human serum. Each 100 mg vial contains: Doxycycline hyclate equivalent to 100 mg doxycycline; ascorbic acid 480 mg; mannitol 300 mg. pH of the reconstituted solution (10 mg/mL) is between 1.8 and 3.3. doxycycline-spl-structure.jpg

Glycopyrrolate Injection, USP is a synthetic anticholinergic agent. Each 1 mL contains: Glycopyrrolate, USP................0.2 mg Water for Injection, USP..........q.s. Benzyl Alcohol, NF...................0.9% (preservative) pH adjusted, when necessary, with hydrochloric acid and/or sodium hydroxide. For Intramuscular (IM) or Intravenous (IV) administration. Glycopyrrolate is a quaternary ammonium salt with the following chemical name: 3[(cyclopentylhydroxyphenylacetyl)oxy]-1,1-dimethyl pyrrolidinium bromide. The molecular formula is C 19 H 28 BrNO 3 and the molecular weight is 398.33. Its structural formula is as follows: Glycopyrrolate occurs as a white, odorless crystalline powder. It is soluble in water and alcohol, and practically insoluble in chloroform and ether. Unlike atropine, glycopyrrolate is completely ionized at physiological pH values. Glycopyrrolate Injection, USP, is a clear, colorless, sterile liquid; pH 2.0 to 3.0. The partition coefficient of glycopyrrolate in a n-octanol/water system is 0.304 (log 10 P= -1.52) at ambient room temperature (24°C). glycopyrrolate-spl-structural-formula

Midazolam hydrochloride is a water-soluble benzodiazepine available as a sterile, nonpyrogenic parenteral dosage form for intravenous or intramuscular injection. Each mL contains midazolam hydrochloride equivalent to 5 mg midazolam compounded with 0.8% sodium chloride and 0.01% edetate disodium, with 1% benzyl alcohol as preservative; the pH is adjusted to 2.9 to 3.5 with hydrochloric acid and, if necessary, sodium hydroxide. Midazolam is a white or yellowish crystalline powder, insoluble in water. The hydrochloride salt of midazolam, which is formed in situ , is soluble in aqueous solutions. Chemically, midazolam HCl is 8-chloro-6-(2-fluorophenyl)-1-methyl-4 H -imidazo[1,5-a][1,4]benzodiazepine hydrochloride. Midazolam hydrochloride has the empirical formula C18H13ClFN3•HCl, a calculated molecular weight of 362.25 and the following structural formula: Under the acidic conditions required to solubilize midazolam in the product, midazolam is present as an equilibrium mixture (shown below) of the closed ring form shown above and an open-ring structure formed by the acid-catalyzed ring opening of the 4,5-double bond of the diazepine ring. The amount of open-ring form is dependent upon the pH of the solution. At the specified pH of the product, the solution may contain up to about 25% of the open-ring compound. At the physiologic conditions under which the product is absorbed (pH of 5 to 8) into the systemic circulation, any open-ring form present reverts to the physiologically active, lipophilic, closed-ring form (midazolam) and is absorbed as such. The following chart plots the percentage of midazolam present as the open-ring form as a function of pH in aqueous solutions. As indicated in the graph, the amount of open-ring compound present in solution is sensitive to changes in pH over the pH range specified for the product: 3.0 to 3.6 for the 5 mg/mL concentration. Above pH 5, at least 99% of the mixture is present in the closed-ring form. midazolamsplstructure1 midazolamsplstructure2 midazolamsplfigure

Tobramycin ophthalmic solution USP, 0.3% is a sterile topical ophthalmic antibiotic formulation prepared specifically for topical therapy of external ophthalmic infections. Each mL of tobramycin ophthalmic solution USP, 0.3% contains: Active: tobramycin 0.3 % (3 mg). Preservative: benzalkonium chloride 0.01 % (0.1 mg). Inactives: boric acid, sodium sulfate decahydrate, sodium chloride, tyloxapol, sodium hydroxide and/or sulfuric acid (to adjust pH) and water for injection. Tobramycin ophthalmic solution USP, 0.3% has a pH range between 7.0 and 8.0 and an osmolality of 260-320 mOsm/kg. Tobramycin is a water-soluble aminoglycoside antibiotic active against a wide variety of gram-negative and gram-positive ophthalmic pathogens. The chemical structure of tobramycin is: Molecular Weight = 467.52 Molecular Formula: C 18 H 37 N 5 O 9 Chemical name: O-3-Amino-3-deoxy-α-D-glucopyranosyl-(1→4)-O-[2,6-diamino-2,3,6-trideoxy-α-D-ribo-hexopyranosyl-(1→6)]-2-deoxy-L-streptamine. tobramycin-spl-structure