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Pharmaceutical Impurity Reference Standards
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- Structure:
- Chemical Name:
- Hydrazinecarboxamide, 2-(6-hydroxy-1-methyl-1H-indol-5-yl)-
- CAS:
- 70063-07-9
- MF:
- C10H12N4O2
- Structure:
- Chemical Name:
- 1H-Pyrrole-3-carboxaldehyde, 1-[(5-chloro-3-pyridinyl)sulfonyl]-5-(2-fluorophenyl)-
- CAS:
- 2514742-82-4
- MF:
- C16H10ClFN2O3S
- Chemical Name:
- Crisaborole Impurity 20
- Chemical Name:
- (Z)-N-(4-((3-chloro-4-fluorophenyl)amino)-7-methoxyquinazolin-6-yl)-4-(piperidin-1-yl)but-2-enamide
- Chemical Name:
- (1S,3R,5S,6R)-6-hydroxy-8-methyl-8-azabicyclo[3.2.1]octan-3-yl 2-hydroxy-2,2-di(thiophen-2-yl)acetate
- Chemical Name:
- Nicergoline EP Impurity IJ
- Chemical Name:
- Fulvestrant impurityABCDEFGHJKL
- Structure:
- Chemical Name:
- 2-((6S,8S,9S,10S,11S,13S,14S,17R)-11,17-dihydroxy-6,10,13-trimethyl-3-oxohexadecahydro-1H-cyclopenta[a]phenanthren-17-yl)-2-oxoethyl acetate
- CAS:
- 114696-04-7
- MF:
- C24H36O6
- Chemical Name:
- Isavuconazole Impurity 49
- Chemical Name:
- (R)-5-(2-((5,6-diethyl-2,3-dihydro-1H-inden-2-yl)amino)-1-methoxyethyl)-8-hydroxyquinolin-2(1H)-one
- Chemical Name:
- Avatrombopag Impurity 51
- Chemical Name:
- Tafluprost Impurity 18
- Chemical Name:
- Rosuvastatin Impurity 161
- Chemical Name:
- Rosuvastatin Impurity 155
- Chemical Name:
- Rosuvastatin Impurity 146
- Chemical Name:
- Rosuvastatin Impurity 126
- Structure:
- Chemical Name:
- (1R,3r,5S)-8-methyl-8-azabicyclo[3.2.1]octan-3-yl 2-hydroxy-2,2-di(thiophen -2-yl)acetate
- CAS:
- 29461-90-3
- MF:
- C18H21NO3S2
- Chemical Name:
- Digoxin Impurity 2
- Structure:
- Chemical Name:
- 1-[2-cyano-1-(cyanoimino)ethyl]piperidine
- CAS:
- 56488-00-7
- MF:
- C9H12N4
- Chemical Name:
- Oseltamivir Impurity 99
- Chemical Name:
- Oseltamivir Impurity 92
- Chemical Name:
- Oseltamivir Impurity 76
- Chemical Name:
- Regorafenib Impurity ABCDEFGHJKL
- Chemical Name:
- (S)-2-((1r,3R,5R,7S)-3-hydroxyadamantan-1-yl)-1-iminohexahydro pyrrolo[1,2-a]pyrazin-4(1H)-one hydrochloride
- Structure:
- Chemical Name:
- Benzonitrile, 4-[2-[(1R,2S)-2-(2,5-difluorophenyl)-2-hydroxy-1-methyl-3-(1H-1,2,4-triazol-1-yl)propyl]-4-thiazolyl]-, rel-
- CAS:
- 1797905-83-9
- MF:
- C22H17F2N5OS
- Structure:
- Chemical Name:
- 3,4,5-Piperidinetriol, 1-(2-hydroxyethyl)-2-(hydroxymethyl)-, (2S,3S,4R,5S)-
- CAS:
- 1550201-56-3
- MF:
- C8H17NO5
- Chemical Name:
- 1-(2,4-difluoro-6-hydroxyphenyl)prop-2-en-1-one
- Structure:
- Chemical Name:
- 1-(4-fluorophenyl)-1,3-dihydro-1-[3-(methylamino)propyl]isobenzofuran-5-carbonitrile
- CAS:
- 62498-67-3
- MF:
- C19H19FN2O
- Structure:
- Chemical Name:
- 17,21-Dihydroxy-16α-methylpregna-1,4,9(11)-triene-3,20-dione 21-Acetate
- CAS:
- 10106-41-9
- MF:
- C24H30O5
- Structure:
- Chemical Name:
- 2-chloro-N-(2,4-dimethylphenyl)acetamide
- CAS:
- 39106-10-0
- MF:
- C10H12ClNO
- Structure:
- Chemical Name:
- sodium [2S-(2alpha,5alpha,6beta)]-6-bromo-3,3-dimethyl-7-oxo-4-thia-1-azabicyclo[3.2.0]heptane-2-carboxylate
- CAS:
- 73335-78-1
- MF:
- C8H9BrNNaO3S
- Structure:
- Chemical Name:
- 8-chloro-3,7-dihydro-1,3,7-trimethyl-1H-purine-2,6-dione
- CAS:
- 4921-49-7
- MF:
- C8H9ClN4O2
- Structure:
- Chemical Name:
- DUTP, 100MM SOLUTION
- CAS:
- 94736-09-1
- MF:
- C9H16N2NaO14P3
- Chemical Name:
- Oxacillin USP Impurity D
- Chemical Name:
- Oxacillin sodium EP impurity B
- Chemical Name:
- isopropyl 1-(4-methoxyphenyl)-7-oxo-6-(4-(2-oxopiperidin-1-yl)phenyl)-4,5,6,7-tetrahydro-1H-pyrazolo[3,4-c]pyridine-3-carboxylate
- Structure:
- Chemical Name:
- 3-Azabicyclo[3.1.0]hexane-2-carboxamide, N-[(1R)-1-cyano-2-[(3S)-2-oxo-3-pyrrolidinyl]ethyl]-3-[(2S)-3,3-dimethyl-1-oxo-2-[(2,2,2-trifluoroacetyl)amino]butyl]-6,6-dimethyl-, (1R,2S,5S)-
- CAS:
- 2755812-41-8
- MF:
- C23H32F3N5O4
- Chemical Name:
- 3-(4-cyanophenoxy)benzyl acetate
- Chemical Name:
- Bisoprolol Impurity 53
- Chemical Name:
- Doxylamine Impurity E
- Structure:
- Chemical Name:
- Phenoxymethylpenicillin Potassium EP Impurity F
- CAS:
- 2714805-53-3
- MF:
- C15H20N2O4S
- Chemical Name:
- Methylprednisolone EP Impurity D1
- Chemical Name:
- Nirmatrelvir Impurity 13
- Structure:
- Chemical Name:
- 2-Pyridinecarboxamide, 4-hydroxy-N-methyl- (9CI)
- CAS:
- 611226-36-9
- MF:
- C7H8N2O2
- Structure:
- Chemical Name:
- 2-Pyridinemethanol, 4-hydroxy-3,5-dimethyl- (9CI)
- CAS:
- 727375-13-5
- MF:
- C8H11NO2
- Chemical Name:
- Bumetanide Impurity 22
- Chemical Name:
- Rocuronium Bromide Impurity 32 、33
- Chemical Name:
- Flucloxacillin Sodium Impurity X
- Chemical Name:
- Pitavastatin Impurity 98
- Chemical Name:
- Perospirone Impurity 29
- Chemical Name:
- Perospirone Impurity 24
- Structure:
- Chemical Name:
- CLOPIDOGREL CARBOXYLIC ACID
- CAS:
- 144457-28-3
- MF:
- C15H14ClNO2S
- Structure:
- Chemical Name:
- RAC (CIS/TRANS) DONEPEZIL N-OXIDE
- CAS:
- 120013-84-5
- MF:
- C24H29NO4
- Structure:
- Chemical Name:
- 5-Carboxy-2'-deoxyuridine
- CAS:
- 14599-46-3
- MF:
- C10H12N2O7
- Structure:
- Chemical Name:
- METOPROLOL IMPURITY D
- MF:
- C15H25NO3
- Chemical Name:
- NITRENDIPINE IMPURITY A
- Structure:
- Chemical Name:
- TAMSULOSIN IMPURITY D
- MF:
- C20H28N2O5S
- Chemical Name:
- Sugammadex sodium Impurity 52
- Chemical Name:
- Sugammadex sodium Impurity 43
- Chemical Name:
- Sugammadex sodium Impurity 39
- Structure:
- Chemical Name:
- Apixaban Impurity 52
- CAS:
- 1620494-31-6
- MF:
- C31H29N5O4
- Chemical Name:
- Cefazolin Impurity EP-J
- Chemical Name:
- Cabozantinib impurity 41
- Chemical Name:
- Cabozantinib impurity 67
- Structure:
- Chemical Name:
- ethyl 6-bromo-2-(bromomethyl)-5-hydroxy-1-methyl-1H-indole-3-carboxylate
- CAS:
- 149246-36-6
- MF:
- C13H13Br2NO3
- Chemical Name:
- Dapoxetine impurity 50
- Chemical Name:
- Doxofylline Impurity 18
- Chemical Name:
- Dapoxetine impurity 63
- Chemical Name:
- Dapoxetine impurity 57
- Structure:
- Chemical Name:
- Bosutinib Impurity 2 (N-Desmethyl Bosutinib)
- CAS:
- 380843-81-2
- MF:
- C25H27Cl2N5O3
- Chemical Name:
- Perospirone Impurity 7
- CAS:
- 1002359-81-0
- Chemical Name:
- 2-methyl-4-(((2E,6E,10E)-3,7,11,15-tetramethylhexadeca-2,6,10,14- tetraen-1-yl)oxy)naphthalen-1-yl acetate
- Chemical Name:
- Paxlovid Impurity 17
- Chemical Name:
- NA
- Chemical Name:
- Fondaparinux sodium impurity 16
- Chemical Name:
- Fondaparinux Sodium Impurity 11
- Chemical Name:
- Oxacillin Impurity E
- Structure:
- Chemical Name:
- AZOBENZENE-3-CARBOXYLICACID
- CAS:
- 14474-22-7
- MF:
- C13H10N2O2
- Chemical Name:
- Bosutinib Impurity 40
- Chemical Name:
- Ticagrelor Impurity J&K
- Chemical Name:
- Olodaterol Impurity 24
- Chemical Name:
- Miglitol Isomer ImpurityB
- Chemical Name:
- 43,50-Dicarboxy-cyanoco balamin
- Structure:
- Chemical Name:
- (1R,4S) Sertraline Hydrochloride
- CAS:
- 79896-32-5
- MF:
- C17H18Cl3N
- Structure:
- Chemical Name:
- 4-Desmethoxy-4-chloro Omeprazole Sulfide
- CAS:
- 220757-74-4
- MF:
- C16H16ClN3OS
- Structure:
- Chemical Name:
- N-Desmethyl Tamoxifen Hydrochloride
- CAS:
- 15917-65-4
- MF:
- C25H27NO.ClH
- Structure:
- Chemical Name:
- (3S,5S)-Atorvastatin sodium salt
- CAS:
- 501121-34-2
- MF:
- C33H35FN2O5
- Structure:
- Chemical Name:
- 2(1H)-Pyrazinone, 3-phenyl-
- CAS:
- 2882-18-0
- MF:
- C10H8N2O
- Structure:
- Chemical Name:
- 1H-Thieno[3,4-d]imidazole-4-valeric acid, hexahydro-2-oxo-, stereoisomer (8CI)
- CAS:
- 21788-37-4
- MF:
- C10H16N2O3S
- Structure:
- Chemical Name:
- pazufloxacin
- CAS:
- 166665-94-7
- MF:
- C16H15FN2O4
- Structure:
- Chemical Name:
- MK 485
- CAS:
- 28875-92-5
- MF:
- C10H14N2O4
- Structure:
- Chemical Name:
- 1,3-Dioxane-4-aceticacid,6-(cyanomethyl)-2,2-dimethyl-,(4R,6R)-(9CI)
- CAS:
- 807312-27-2
- MF:
- C10H15NO4
- Structure:
- Chemical Name:
- bromobenzarone
- CAS:
- 94729-09-6
- MF:
- C17H13BrO3
- Structure:
- Chemical Name:
- digoxigenin-bis(digitoxoside)
- CAS:
- 5297-05-2
- MF:
- C35H54O11
- Structure:
- Chemical Name:
- 17 alpha-cyanomethyl-19-nortestosterone
- CAS:
- 67473-36-3
- MF:
- C20H27NO2
- Structure:
- Chemical Name:
- desmethylazelastine
- CAS:
- 47491-38-3
- MF:
- C21H22ClN3O