XATMEP contains methotrexate, a folate analog metabolic inhibitor. Chemically methotrexate is N-[4-[[(2,4-diamino-6-pteridinyl)methyl]methylamino]-benzoyl]-L-glutamic acid. The structural formula is: XATMEP is a clear yellow to orange oral solution that contains 2.5 mg of methotrexate per milliliter (equivalent to 2.74 mg of methotrexate sodium/mL).… Continue Reading


The active component of XHANCE is fluticasone propionate, a corticosteroid, having the chemical name -(fluoromethyl) 6α,9-difluoro-11β,17-dihydroxy-16α-methyl-3oxoandrosta-1,4-diene-17β-carbothioate, 17‑propionate and the following chemical structure: Fluticasone propionate is a white powder with a molecular weight of 500.57, and the empirical formula is CHFOS.… Continue Reading


XIGDUO XR (dapagliflozin and metformin HCl extended-release) tablets contain two oral antihyperglycemic medications used in the management of type 2 diabetes: dapagliflozin and metformin hydrochloride.


XALKORI (crizotinib) is an oral receptor tyrosine kinase inhibitor. The molecular formula for crizotinib is CHClFNO. The molecular weight is 450.34 daltons. Crizotinib is described chemically as ()-3-[1-(2,6-Dichloro-3-fluorophenyl)ethoxy]-5-[1-(piperidin-4-yl)-1-pyrazol-4-yl]pyridin-2-amine. The chemical structure of crizotinib is shown below: Crizotinib is a white… Continue Reading


Sodium oxybate, a CNS depressant, is the active ingredient in Xyrem. The chemical name for sodium oxybate is sodium 4-hydroxybutyrate. The molecular formula is CHNaO, and the molecular weight is 126.09 g/mole. The chemical structure is: Sodium oxybate is a… Continue Reading


Radium Ra 223 dichloride, an alpha particle-emitting pharmaceutical, is a radiotherapeutic drug. Xofigo is supplied as a clear, colorless, isotonic, and sterile solution to be administered intravenously with pH between 6 and 8. Each milliliter of solution contains 1,100 kBq… Continue Reading


Xgeva (denosumab) is a human IgG2 monoclonal antibody that binds to human RANKL. Denosumab has an approximate molecular weight of 147 kDa and is produced in genetically engineered mammalian (Chinese hamster ovary) cells. Xgeva is a sterile, preservative-free, clear, colorless to… Continue Reading


XADAGO tablets contain safinamide, which is a MAO-B inhibitor, as the mesylate salt. Safinamide mesylate is (S)-2- [[4-[(3-fluorophenyl) methoxy]phenyl]methyl]aminopropanamide methanesulfonate (1:1) and its structural formula is below. The molecular formula of safinamide mesylate is C H FN O ∙CH O… Continue Reading


The chemical name for lifitegrast is (S)-2-(2-(benzofuran-6-carbonyl)-5,7-dichloro-1,2,3,4-tetrahydroisoquinoline-6-carboxamido)-3-(3-(methylsulfonyl)phenyl)propanoic acid. The molecular formula of lifitegrast is CHClNOS and its molecular weight is 615.5. The structural formula of lifitegrast is: Lifitegrast is a white to off-white powder which is soluble in water. Xiidra… Continue Reading


XEPI contains ozenoxacin, a quinolone antimicrobial. It is intended for topical use only. The chemical name of ozenoxacin is 1-Cyclopropyl-8-methyl-7-(5-methyl-6-methylamino-pyridin-3-yl)-4-oxo-1,4-dihydro-quinoline-3-carboxylic acid. Ozenoxacin, a white to pale-yellow crystalline solid, has a molecular formula of CHNO, and a molecular weight of 363.41.… Continue Reading