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Pharmaceutical Impurity Reference Standards
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- Structure:
- Chemical Name:Menaquinone 4 2,3-Epoxide
- CAS:72908-86-2
- MF:C31H40O3
- Structure:
- Chemical Name:D-Phenylalanyl Nateglinide
- CAS:944746-48-9
- MF:C28H36N2O4
- Structure:
- Chemical Name:Felodipine 3,5-DiMethyl Ester
- CAS:91189-59-2
- MF:C17H17Cl2NO4
- Structure:
- Chemical Name:Moxifloxacin Methyl Ester
- CAS:721970-35-0
- MF:C22H26FN3O4
- Structure:
- Chemical Name:Atomoxetine Related Compound C (10 mg) (N-methyl-3-phenyl-3-(p-tolyloxy)propan-1-amine hydrochloride)
- CAS:873310-31-7
- MF:C17H22ClNO
- Structure:
- Chemical Name:Dofetilide Related Compound A (25 mg) (N-[4-(2-(2-[4-(methanesulfonamido)phenoxy]ethyl)amino)phenyl]methanesulfonamide)
- CAS:176447-94-2
- MF:C18H25N3O5S2
- Structure:
- Chemical Name:5-Methyl-2-(1H-1,2,3-triazol-1-yl)benzoic acid
- CAS:1149352-55-5
- MF:C10H9N3O2
- Structure:
- Chemical Name:9-ethyl-8-iodo-6,6-diMethyl-11-oxo-6,11-dihydro-5H-benzo[b]carbazole-3-carbonitrile
- CAS:1256584-80-1
- MF:C21H17IN2O
- Structure:
- Chemical Name:9-ethyl-8-iodo-6,6-diMethyl-11-oxo-6,11-dihydro-5H-benzo[b]carbazole-3-carbonitrile
- CAS:1256584-80-1
- MF:C21H17IN2O
- Structure:
- Chemical Name:Palonosetron Impurity 7
- CAS:177932-92-2
- MF:C18H24N2O
- Structure:
- Chemical Name:4-(2,3-Dichlorophenyl)-2,6-diMethyl-1,4-dihydropyridine-3,5-dicarboxylic acid
- CAS:138279-32-0
- MF:C15H13Cl2NO4
- Chemical Name:Ganciclovir EP Impurity
- CAS:
- MF:
- Chemical Name:Crisaborole Impurity 15
- CAS:
- MF:
- Chemical Name:Latamoxef impurity A
- CAS:
- MF:
- Structure:
- Chemical Name:5,8-Dihydroxy-1,4-bis-[2-(2-hydroxy-ethylamino)-ethylamino]-2,3-dihydro-anthraquinone
- CAS:70476-74-3
- MF:C22H30N4O6
- Structure:
- Chemical Name:4-Acetyl-2-fluorobiphenyl
- CAS:42771-79-9
- MF:C14H11FO
- Structure:
- Chemical Name:4-(4-fluoro-3-(piperazine-1-carbonyl)benzyl)phthalazin-1(2H)-one
- CAS:763111-47-3
- MF:C20H19FN4O2
- Structure:
- Chemical Name:IRBESARTAN RELATED COMPOUND A (25 MG) (1-PENTANOYLAMINO-CYCLOPENTANECARBOXYLIC ACID [2'-(1H-TETRAZOL-5-YL)-BIPHENYL-4-YLMETHYL]-AMIDE)
- CAS:748812-53-5
- MF:C25H30N6O2
- Structure:
- Chemical Name:FENOFIBRATE RELATED COMPOUND C (25 MG) (1-METHYLETHYL 2-[[2-[4-(4-CHLOROBENZOYL)PHENOXY]-2-METHYLPROPANOYL]OXY]-2-METHYLPROPANOATE)
- CAS:217636-48-1
- MF:C24H27ClO6
- Structure:
- Chemical Name:4-(DIPHENYLMETHYL)-1-PIPERAZINEETHANOL DIHYDROCHLORIDE
- CAS:108983-83-1
- MF:C19H26Cl2N2O
- Structure:
- Chemical Name:2-Piperazine-4-amino-6,7-dimethoxyquinazoline
- CAS:60547-97-9
- MF:C14H19N5O2
- Structure:
- Chemical Name:N-ACETYL-4-BENZOQUINONE IMINE
- CAS:50700-49-7
- MF:C8H7NO2
- Structure:
- Chemical Name:DIGOXIGENIN-TETRA-DIGITOXOSIDE
- CAS:31539-05-6
- MF:C47H74O17
- Chemical Name:Afatinib impurity 82
- CAS:
- MF:
- Chemical Name:Afatinib impurity 82
- CAS:
- MF:
- Chemical Name:Sugammadex sodium Impurity 51
- CAS:
- MF:
- Chemical Name:Sugammadex sodium Impurity 42
- CAS:
- MF:
- Structure:
- Chemical Name:Org49095
- CAS:2412952-95-3
- MF:C71H111NaO48S8
- Chemical Name:Clopidogrel Impurity 55
- CAS:
- MF:
- Chemical Name:Cabozantinib impurity 43
- CAS:
- MF:
- Chemical Name:Cabozantinib impurity 75
- CAS:
- MF:
- Chemical Name:Cabozantinib impurity 73
- CAS:
- MF:
- Chemical Name:Canagliflozin Impurity 69
- CAS:
- MF:
- Chemical Name:Dapoxetine impurity 65
- CAS:
- MF:
- Chemical Name:Dapoxetine impurity 59
- CAS:
- MF:
- Structure:
- Chemical Name:m-xylene-4,alpha,alpha'-triol
- CAS:2937-60-2
- MF:C8H10O3
- Chemical Name:Oseltamivir Impurity 107
- CAS:
- MF:
- Chemical Name:Oseltamivir Impurity 66
- CAS:
- MF:
- Chemical Name:Tazobactam Impurity DBT
- CAS:
- MF:
- Structure:
- Chemical Name:diginatin
- CAS:52589-12-5
- MF:C41H64O15
- Structure:
- Chemical Name:Thiophene, 2-(2-fluorophenyl)-5-[(5-iodo-2-methylphenyl)methyl]-
- CAS:2436275-33-9
- MF:C18H14FIS
- Chemical Name:3-Chloro Avanafil
- CAS:
- MF:
- Structure:
- Chemical Name:Revefenacin Impurity 2
- CAS:1158699-78-5
- MF:C14H17NO4
- Structure:
- Chemical Name:(R)-2-(4-Methoxyphenyl)-1-methylethanamine
- CAS:58993-79-6
- MF:C10H15NO
- Structure:
- Chemical Name:N-[5-[(1RS)-2-[benzyl[(1RS)-2-(4-methoxyphenyl)- 1-methylethyl]amino]-1-hydroxyethyl]-2- hydroxyphenyl]formamide
- CAS:2514947-17-0
- MF:C26H30N2O4
- Chemical Name:NA
- CAS:
- MF:
- Chemical Name:Cilastatin Impurity H
- CAS:
- MF:
- Chemical Name:(trans, trans)-3,3'-(1,4,7,10-tetraazacyclododecane-1,7-diyl)bis(butane-1,2,4-triol)
- CAS:
- MF:
- Chemical Name:Azelastine Impurity K
- CAS:
- MF:
- Chemical Name:(4R,6R)-6-(2-((1S,2S)-2,6-dimethyl-1,2,3,4-tetrahydronaphthalen-1-
- CAS:
- MF:
- Chemical Name:Carbazochrome Sodium Sulfonate Impurity 1
- CAS:
- MF:
- Chemical Name:Rosuvastatin Impurity 147
- CAS:
- MF:
- Chemical Name:NA
- CAS:
- MF:
- Chemical Name:Cetrorelix Impurity 10
- CAS:
- MF:
- Chemical Name:Cetrorelix Impurity 3 (9-D-Pro)
- CAS:
- MF:
- Chemical Name:Peramivir Intermediate Impurity 42
- CAS:
- MF:
- Chemical Name:Nintedanib impurity A drops
- CAS:
- MF:
- Chemical Name:Tofacitinib impurity N drops
- CAS:
- MF:
- Chemical Name:Carboprost impurity 999
- CAS:
- MF:
- Chemical Name:Bumetanide impurity C drops
- CAS:
- MF:
- Chemical Name:Apixaban Impurity 79
- CAS:
- MF:
- Chemical Name:Troxipide Impurity 6
- CAS:
- MF:
- Chemical Name:Piperacillin Impurity K
- CAS:
- MF:
- Chemical Name:2-(6'-oxo-1'-phenyl-1',6'-dihydro-[2,3'-bipyridin]-5'-yl)benzoic acid
- CAS:
- MF:
- Structure:
- Chemical Name:3-Thiophenecarboxylic acid, 4-methyl-5-(4-nitrophenyl)-2-[(propoxycarbonyl)amino]-, ethyl ester
- CAS:2591260-03-4
- MF:C18H20N2O6S
- Chemical Name:Pemetrexed disodium Impurity 32
- CAS:
- MF:
- Structure:
- Chemical Name:Androsta-1,4-diene-17-carboxylic acid, 11,16,17-trihydroxy-3-oxo-, (11β,16α,17α)-
- CAS:1185143-75-2
- MF:C20H26O6
- Chemical Name:Tazobactam Impurity LTE
- CAS:
- MF:
- Chemical Name:Isavuconazole Impurity 47
- CAS:
- MF:
- Structure:
- Chemical Name:5,5'-((1R,1'R)-((5,6-diethyl-2,3-dihydro-1H-inden-2-yl)azanediyl)bis(1-hydroxyethane-2,1-diyl))bis(8-(benzyloxy)quinolin-2(1H)-one)
- CAS:753498-27-0
- MF:C49H49N3O6
- Structure:
- Chemical Name: Eltrombopag Impurity 37
- CAS:350024-70-3
- MF:C14H18N2O
- Structure:
- Chemical Name:(S)-N-(2-(1-(3-ethoxy-4-methoxyphenyl)-2-((2-hydroxyethyl)sulfonyl)ethyl)-1,3-dioxoisoindolin-4-yl)acetamide
- CAS:
- MF:C23H26N2O8S
- Structure:
- Chemical Name:2-(4-(2-(4-(1-(2-ethoxyethyl)-1H-benzo[d]imidazol-2-yl)piperidin-1-yl)ethyl)phenyl)-2-methylpropan-1-ol
- CAS:
- MF:C28H39N3O2
- Chemical Name:Tafluprost Impurity 20
- CAS:
- MF:
- Chemical Name:Rosuvastatin Impurity 149
- CAS:
- MF:
- Structure:
- Chemical Name:2-CHLOROMETHYL-5-TRIFLUOROMETHYL-[1,3,4]OXADIAZOLE
- CAS:723286-98-4
- MF:C4H2ClF3N2O
- Chemical Name:Rifampicin Quinone Oxide
- CAS:
- MF:
- Structure:
- Chemical Name:1-Phenyl-3,4-dihydroisoquinoline
- CAS:52250-50-7
- MF:C15H13N
- Structure:
- Chemical Name:Pyrazinecarboxamide, 3,6-difluoro- (9CI)
- CAS:356783-29-4
- MF:C5H3F2N3O
- Structure:
- Chemical Name:Benzamide, 3-hydrazino- (9CI)
- CAS:473927-51-4
- MF:C7H9N3O
- Structure:
- Chemical Name:4-[5-({2-[(4-{5-[Bis(2-chloroethyl)amino]-1-methyl-1H-benzimidazol-2-yl}butanoyl)oxy]ethyl}(2-chloroethyl)amino)-1-methyl-1H benzimidazol-2-yl]butanoic acid
- CAS:1926162-37-9
- MF:C32H42Cl4N6O4
- Structure:
- Chemical Name:Isavuconazole Impurity 39
- CAS:207224-73-5
- MF:C21H18F2N4OS
- Chemical Name:Anastrozole Impurity 41
- CAS:
- MF:
- Chemical Name:Anastrozole Impurity 41
- CAS:
- MF:
- Chemical Name:Isavuconazole Impurityi45
- CAS:
- MF:
- Structure:
- Chemical Name:Gatifloxacinacid
- CAS:121577-32-0
- MF:C19H22FN3O4.ClH
- Chemical Name:Bisoprolol Impurity 41
- CAS:
- MF:
- Structure:
- Chemical Name:1,4-Naphthalenedione, 2-(3-hydroxy-3,7,11,15-tetramethyl-1,6,10,14-hexadecatetraenyl)-3-methyl-, (,E,E)- (9CI)
- CAS:65061-22-5
- MF:C31H40O3
- Chemical Name:Piperacilin
- CAS:
- MF:
- Chemical Name: Varenicline Impurity D
- CAS:
- MF:
- Structure:
- Chemical Name:2-Propanone, 1-(2-hydroxypropoxy)- (9CI)
- CAS:90817-38-2
- MF:C6H12O3
- Chemical Name:Nirmatrelvir Impurity 4
- CAS:
- MF:
- Chemical Name:Nifedipine Impurity L
- CAS:
- MF:
- Structure:
- Chemical Name:2-Pyrrolidinone, 3,4-dihydroxy-5-(hydroxymethyl)-, (3R,4R,5R)- (9CI)
- CAS:155102-96-8
- MF:C5H9NO4
- Chemical Name:Bumetanide Impurity 24
- CAS:
- MF: