Chemical Name:O-Desmethyl Carvedilol-d5 β-D-GlucuronideSynonyms:2-[2-[[3-(9H-Carbazol-4-yloxy)-2-hydroxypropyl-d5]amino]ethoxy]phenyl β-D-Glucopyranosiduronic AcidAlternate CAS #:Unlabelled: 142227-50-7Molecular Formula:C₂₉H₂₇D₅N₂O₁₀Molecular Weight:573.6Category:Standards; Isotopic Labeled Analogues; Pharmaceutical/API…

Chemical Name:N-Desmethyl (Z)-Doxepin HydrochlorideSynonyms:(3Z)-3-Dibenz[b,e]oxepin-11(6H)-ylidene-N-methyl-1-propanamine Hydrochloride; (Z)-3-Dibenz[b,e]oxepin-11(6H)-ylidene-N-methyl-1-propanamine Hydrochloride; Dibenz[b,e]oxepin 1-Propanamine deriv.CAS Number:124694-02-6Alternate CAS #:Free base: 58534-46-6;…

Chemical Name:Des-difluoro-oxo Des-(methyl ((S)-1-((1R,3S,4S)-3-(1H-benzo[d]imidazol-2-yl)-2-azabicyclo[2.2.1]heptan-2-yl)-3-methyl-1-oxobutan-2-yl)carbamate) LedipasvirSynonyms:Ledipasvir Keto Impurity-1Molecular Formula:C₂₉H₂₉BrN₄O₄Molecular Weight:577.47Category:Standards; Pharmaceutical/API Drug Impurities/Metabolites;Applications:Ledipasvir Keto Impurity-1 can…

Chemical Name:3-O-Desmethyl Amlodipine-d5Synonyms:2-​[(2-​Aminoethoxy)​methyl]​-​4-​(2-​chlorophenyl)​-​1,​4-​dihydro-​6-​methyl-​3,​5-​pyridinedicarboxylic Acid 3-​Ethyl EsterAlternate CAS #:Unlabelled: 113994-37-9Molecular Formula:C₁₉H₁₈D₅ClN₂O₅Molecular Weight:399.88Category:Standards; Pharmaceutical/API Drug Impurities/Metabolites;Applications:3-O-Desmethyl Amlodipine-d5…

Chemical Name:5'-Desmethoxy-5'-methyl 7'-Methyl 3,5-Dimethyl OmeprazoleSynonyms:2-[[(4-Methoxy-2-pyridinyl)methyl]sulfinyl]-5,7-dimethyl-1H-benzimidazole;CAS Number:73590-45-1Molecular Formula:C₁₆H₁₇N₃O₂SMolecular Weight:315.39Category:Standards; Pharmaceutical/API Drug Impurities/Metabolites;Applications:5'-Desmethoxy-5'-methyl 7'-Methyl 3,5-Dimethyl Omeprazole is…

Chemical Name:rac-4’-O-Desmethyl-4’-O-ethyl ApremilastSynonyms:N-(2-(1-(3,4-Diethoxyphenyl)-2-(methylsulfonyl)ethyl)-1,3-dioxoisoindolin-4-yl)acetamide; Apremilast Impurity DMolecular Formula:C₂₃H₂₆N₂O₇SMolecular Weight:474.53Category:Standards; Enzyme Activators and Inhibitors; Pharmaceutical/API Drug Impurities/Metabolites;Applications:rac-4’-O-Desmethyl-4’-O-ethyl…

Chemical Name:Desfluoro Hydroxy FallyprideSynonyms:5-(3-Hydroxypropyl)-2,3-dimethoxy-N-[[(2S)-1-(2-propenyl)-2-pyrrolidinyl]methyl]-benzamide; (S)-5-(3-hydroxypropyl)-2,3-dimethoxy-N-[[1-(2-propenyl)-2-pyrrolidinyl]methyl]-Benzamide;CAS Number:166173-73-5Molecular Formula:C₂₀H₃₀N₂O₄Molecular Weight:362.46Category:Standards; Pharmaceutical/API Drug Impurities/Metabolites;Applications:Desfluoro Hydroxy Fallypride is a…

Chemical Name:(2S,3R)-Des-N-(methoxycarbonyl)-L-tert-leucine Bis-Boc AtazanavirSynonyms:2-[(2S,3R)-3-[[(1,1-Dimethylethoxy)carbonyl]amino]-2-hydroxy-4-phenylbutyl]-2-[[4-(2-pyridinyl)phenyl]methyl]hydrazinecarboxylic Acid 1,1-Dimethylethyl EsterMolecular Formula:C₃₂H₄₂N₄O₅Molecular Weight:562.7Category:Standards; Pharmaceutical/API Drug Impurities/Metabolites;Applications:(2S,3R)-Des-N-(methoxycarbonyl)-L-tert-leucine Bis-Boc Atazanavir is…

Chemical Name:(R,R)-Des-N-(methoxycarbonyl)-L-tert-leucine Bis-Boc AtazanavirSynonyms:2-[(2R,3R)-3-[[(1,1-Dimethylethoxy)carbonyl]amino]-2-hydroxy-4-phenylbutyl]-2-[[4-(2-pyridinyl)phenyl]methyl]hydrazinecarboxylic Acid 1,1-Dimethylethyl EsterAlternate CAS #:Enantiomer: 198904-86-8Molecular Formula:C₃₂H₄₂N₄O₅Molecular Weight:562.7Category:Standards; Pharmaceutical/API Drug Impurities/Metabolites;Applications:(R,R)-Des-N-(methoxycarbonyl)-L-tert-leucine…

Chemical Name:N-Desmethyl AlosetronSynonyms:2,3,4,5-Tetrahydro-2-[(5-methyl-1H-imidazol-4-yl)methyl]-1H-pyrido[4,3-b]indol-1-one; 2,3,4,5-Tetrahydro-2-[(4-methyl-1H-imidazol-5-yl)methyl]-1H-pyrido[4,3-b]indol-1-one; N-Desmethyl Lotronex; Alosetron N-Desmethyl ImpurityImpurityAlosetron N-Desmethyl ImpurityCAS Number:122852-63-5Molecular Formula:C₁₆H₁₆N₄OMolecular Weight:280.32Category:Standards; Pharmaceutical/API…