Chemical Name:(R,R)-N,N'-Didemethyl Atracurium OxalateSynonyms:9-((S)-1-(3,4-Dimethoxybenzyl)-6,7-dimethoxy-3,4-dihydroisoquinolin-2(1H)-yl)-7-oxononyl 3-((R)-1-(3,4-Dimethoxybenzyl)-6,7-dimethoxy-3,4-dihydroisoquinolin-2(1H)-yl)propanoate Oxalate; Atracurium EP Impurity B;CAS Number:96687-52-4Alternate CAS #:Free Base: 64228-84-8Molecular…

Chemical Name:16,17-Didehydro 16-Demethyl DesoximetasoneSynonyms:(11α)-9-Fluoro-11,21-dihydroxy-pregna-1,4,16-triene-3,20-dione;CAS Number:1234572-33-8Molecular Formula:C₂₁H₂₅FO₄Molecular Weight:360.42Category:Standards; Pharmaceutical/API Drug Impurities/Metabolites; Steroids;Applications:16,17-Didehydro 16-Demethyl Desoximetasone is an…

Chemical Name:9-cis-4,5-Didehydro-5,6-dihydro Retinoic AcidCAS Number:111957-72-3Molecular Formula:C₂₀H₂₈O₂Molecular Weight:300.44Category:Standards; Pharmaceutical/API Drug Impurities/Metabolites; Vitamin Derivatives;Applications:9-cis-4,5-Didehydro-5,6-dihydro Retinoic acid is…

Chemical Name:N-​DesmethyldauricineSynonyms:4-[[(1R)-1,2,3,4-Tetrahydro-6,7-dimethoxy-1-isoquinolinyl]methyl]-2-[4-[[(1R)-1,2,3,4-tetrahydro-6,7-dimethoxy-2-methyl-1-isoquinolinyl]methyl]phenoxy]phenol;CAS Number:146763-55-5Molecular Formula:C₃₇H₄₂N₂O₆Molecular Weight:610.74Category:Standards; Pharmaceutical/API Drug Impurities/Metabolites;Applications:N-​Desmethyldauricine is a derivative of Daurisoline (D194860), a…

Chemical Name:7,8-Dihydroxykynurenic acid-13C4Synonyms:4,7,8-Trihydroxyquinoline-2-carboxylic-2,3,4-13C3 AcidMolecular Formula:C613C4H7NO5Molecular Weight:225.1Category:Standards; Pharmaceutical/API Drug Impurities/Metabolites;Applications:7,8-Dihydroxykynurenic acid is a metabolite of the…

Chemical Name:3-Desmethyl 4-Methyl Meclizine Dihydrochloride-d8Synonyms:1-[(4-Chlorophenyl)phenylmethyl]-4-[(4-methylphenyl)methyl]-piperazine-d8; 1-(p-Chloro-α-phenylbenzyl)-4-p-methylbenzyl-piperazine-d8Alternate CAS #:Unlabelled: 879672-35-2, Free base: 873395-53-0Molecular Formula:C₂₅H₂₁D₈Cl₃N₂Molecular Weight:471.92Category:Standards; Isotopic…

Chemical Name:Propanamino-Osimertinib DimerSynonyms:N-(2-((2-(Dimethylamino)ethyl)(methyl)amino)-4-methoxy-5-((4-(1-methyl-1H-indol-3-yl)pyrimidin-2-yl)amino)phenyl)-3-((2-((2-(dimethylamino)ethyl)(methyl)amino)-4-methoxy-5-((4-(1-methyl-1H-indol-3-yl)pyrimidin-2-yl)amino)phenyl)amino)propanamide; 3-((2-((2-(Dimethylamino)ethyl)(methyl)amino)-4-methoxy-5-((4-(1-methyl-1H-indol-3-yl)pyrimidin-2-yl)amino)phenyl)amino)propanamino OsimertinibMolecular Formula:C₅₃H₆₄N₁₄O₃Molecular Weight:945.17Applications:3-((2-((2-(Dimethylamino)ethyl)(methyl)amino)-4-methoxy-5-((4-(1-methyl-1H-indol-3-yl)pyrimidin-2-yl)amino)phenyl)amino)propanamino Osimertinib is an impurity of AZD 9291(A808075) which…

Chemical Name:O-Des(2-Methylpropan-1-one)-O-Benzyl-FesoteridoneSynonyms:3-[(1R)-3-[bis(1-Methylethyl)amino]-1-phenylpropyl]-4-(phenylmethoxy)benzenemethanol; (+)-3-[3-[bis(1-methylethyl)amino]-1-phenylpropyl]-4-(phenylmethoxy)benzenemethanolCAS Number:156755-37-2Molecular Formula:C₂₉H₃₇NO₂Molecular Weight:431.61Category:Standards; Pharmaceutical/API Drug Impurities/Metabolites;Applications:O-Des(2-Methylpropan-1-one)-O-Benzyl-Fesoteridone is an impurity in the synthesis…

Chemical Name:((10S,11S)-8-Chloro-11-((methylamino)methyl)-10,11-dihydrodibenzo[b,f]oxepin-10-yl)methanolAlternate CAS #:65576-45-6; (R,R)-isomer: 1357194-69-4Molecular Formula:C₁₇H₁₈ClNO₂Molecular Weight:303.78Category:Standards; Pharmaceutical/API Drug Impurities/Metabolites;Applications:Di-Asenapine is the impurity of…

Chemical Name:N,O-Desmethylene 10-Despiperazino-10-fluoro MarbofloxacinSynonyms:6,7-Difluoro-8-hydroxy-1,4-dihydro-1-methylamino-4-oxoquinoline-3-carboxylic Acid; 6,7-Difluoro-1,4-dihydro-8-hydroxy-1-(methylamino)-4-oxo-3-quinolinecarboxylic Acid; Marbofloxacin Impurity ACAS Number:115551-40-1Molecular Formula:C₁₁H₈F₂N₂O₄Molecular Weight:270.19Category:Standards; Pharmaceutical/API Drug…