Dextroamphetamine sulfate, USP is the dextro isomer of the compound -amphetamine sulfate, a sympathomimetic amine of the amphetamine group. Chemically, dextroamphetamine is -alpha-methylphenethylamine, and is present in all forms of dextroamphetamine sulfate, USP as the neutral sulfate. The structural formula… Continue Reading


ZONEGRAN (zonisamide) is an antiseizure drug chemically classified as a sulfonamide and unrelated to other antiseizure agents. The active ingredient is zonisamide, 1,2-benzisoxazole-3-methanesulfonamide. The empirical formula is CHNOS with a molecular weight of 212.23. Zonisamide is a white powder, pKa… Continue Reading


ZUTRIPRO Oral Solution contains hydrocodone bitartrate (a semisynthetic centrally-acting opioid antitussive), chlorpheniramine maleate (an antihistamine), and pseudoephedrine hydrochloride (an indirect sympathomimetic amine). Each 5 mL dose of ZUTRIPRO Oral Solution contains: hydrocodone bitartrate, USP, 5 mg; chlorpheniramine maleate, USP, 4… Continue Reading


The active ingredient in ZANTAC Injection is ranitidine hydrochloride (HCl), a histamine H-receptor antagonist. Chemically it is N[2-[[[5-[(dimethylamino)methyl]-2-furanyl]methyl]thio]ethyl]-N′-methyl-2-nitro-1,1-ethenediamine, hydrochloride. It has the following structure: The empirical formula is CHNOS●HCl, representing a molecular weight of 350.87. Ranitidine HCl is a white… Continue Reading


ZESTORETIC® (Lisinopril and Hydrochlorothiazide) combines an angiotensin converting enzyme inhibitor, lisinopril, and a diuretic, hydrochlorothiazide. Lisinopril, a synthetic peptide derivative, is an oral long-acting angiotensin converting enzyme inhibitor. It is chemically described as (S)-1-[N2-(1-carboxy-3-phenylpropyl)-L-lysyl]-L-proline dihydrate. Its empirical formula is CHNO… Continue Reading


Lisinopril is an oral long-acting angiotensin converting enzyme (ACE) inhibitor. Lisinopril, a synthetic peptide derivative, is chemically described as (S)-1-[N2-(1-carboxy-3-phenylpropyl)-L-lysyl]-L-proline dihydrate. Its empirical formula is CHNO2HO and its structural formula is: Lisinopril is a white to off-white, crystalline powder, with… Continue Reading


Zometa contains zoledronic acid, a bisphosphonic acid which is an inhibitor of osteoclastic bone resorption. Zoledronic acid is designated chemically as (1-Hydroxy-2-imidazol-1-yl-phosphonoethyl) phosphonic acid monohydrate and its structural formula is: Zoledronic acid is a white crystalline powder. Its molecular formula is CHNOP•HO and… Continue Reading


The active component of ZETONNA is ciclesonide, a non-halogenated glucocorticoid having the chemical name pregna -1,4-diene-3,20-dione, 16,17-[[R-cyclohexylmethylene]bis(oxy)]-11-hydroxy-21-(2-methyl-1-oxopropoxy)-,(11ß,16α)-. Ciclesonide is delivered as the R-epimer. The empirical formula is CHO and its molecular weight is 540.7. Its structural formula is as follows:… Continue Reading


ZOLADEX® (goserelin acetate implant) is a GnRH agonist. Goserelin acetate is chemically described as an acetate salt of [D-Ser(Bu)6,Azgly]. Its chemical structure is pyro-Glu-His-Trp-Ser-Tyr-D-Ser(Bu)-Leu-Arg-Pro-Azgly-NH acetate [CHNO ·(CHO) where x = 1 to 2.4]. Goserelin acetate is an off-white powder with… Continue Reading


ZELAPAR Orally Disintegrating Tablets contain selegiline hydrochloride, a levorotatory acetylenic derivative of phenethylamine. Selegiline hydrochloride is described chemically as: (-)-(R)-N, α-dimethyl-N-2-propynylphenethylamine hydrochloride and its structural formula is: Its empirical formula is CHNHCl, representing a molecular weight of 223.75. Selegiline hydrochloride… Continue Reading