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Pharmaceutical Impurity Reference Standards
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- Structure:
- Chemical Name:
- 1-[(2-CHLOROPHENYL)DIPHENYLMETHYL]-1H-PYRAZOLE
- MF:
- C22H17ClN2
- Structure:
- Chemical Name:
- Celecoxib Impurity 2
- CAS:
- 948293-46-7
- MF:
- C11H9F3N2
- Structure:
- Chemical Name:
- 1-METHYL-4-PHENYL-3-(TRIFLUOROMETHYL)-1H-PYRAZOL-5-AMINE
- CAS:
- 63156-74-1
- MF:
- C11H10F3N3
- Structure:
- Chemical Name:
- AURORA KA-7735
- CAS:
- 6487-86-1
- MF:
- C9H13NO2
- Chemical Name:
- Sugammadex sodium Impurity 45
- Chemical Name:
- Carboprost Trometamol 1
- Chemical Name:
- Apremilast ImpurityTNN
- Structure:
- Chemical Name:
- Tenofovir Impurity 113
- CAS:
- 1335287-28-9
- MF:
- C11H13IN4O
- Chemical Name:
- Cefazolin USP Impurity L-δ3
- Chemical Name:
- Cabozantinib impurity 38
- Chemical Name:
- Cabozantinib impurity 57
- Structure:
- Chemical Name:
- (R)-2-((2R,5R)-3,6-dioxo-5-phenylpiperazin-2-yl)-5-methyl-3,6-dihydro-2H-1,3-thiazine-4-carboxylic acid
- CAS:
- 860011-30-9
- MF:
- C16H17N3O4S
- Chemical Name:
- 6-bromo-4-((dimethylamino)methyl)-5-hydroxy-N,1-dimethyl-2-((phenylthio)methyl)-1H-indole-3-carboxamide
- Chemical Name:
- Dapoxetine impurity 54
- Chemical Name:
- Doxofylline Impurity 21
- Chemical Name:
- Dapoxetine impurity 60
- Structure:
- Chemical Name:
- Bosutinib Impurity 37
- CAS:
- 2095306-27-5
- MF:
- C39H30Cl4N6O6
- Structure:
- Chemical Name:
- ADRENOCHROME
- CAS:
- 54-06-8
- MF:
- C9H9NO3
- Structure:
- Chemical Name:
- TELMISARTAN-D3
- CAS:
- 1189889-44-8
- MF:
- C33H27D3N4O2
- Structure:
- Chemical Name:
- 3-Chloro-4-morpholino-1,2,5-thiadiazole
- CAS:
- 30165-96-9
- MF:
- C6H8ClN3OS
- Structure:
- Chemical Name:
- 1-(4-NITRO-PHENYL)-PIPERIDIN-2-ONE
- CAS:
- 39257-91-5
- MF:
- C5H10O2S
- Structure:
- Chemical Name:
- Atomoxetine impurity D CRS
- CAS:
- 873310-29-3
- MF:
- C17H21NO
- Chemical Name:
- Beraprost Impurity 2
- Chemical Name:
- Brivudine Impurity 2
- Structure:
- Chemical Name:
- 3-METHOXYCARBONYLAMINO-4-METHYLPYRIDINE
- CAS:
- 694495-63-1
- MF:
- C8H10N2O2
- Chemical Name:
- Empagliflozin Impurity 74
- Chemical Name:
- Empagliflozin Impurity 78
- Chemical Name:
- Empagliflozin Impurity 85
- Chemical Name:
- Relugolix Impurity 11
- Chemical Name:
- 1-(3,4-bis(hydroxymethyl)-1H-pyrrol-2-yl)ethan-1-one
- Structure:
- Chemical Name:
- Gadobutrol Impurity 32
- MF:
- C14H23GdN4O6
- Structure:
- Chemical Name:
- Ornidazole Impurity 23
- CAS:
- 1100750-18-2
- Chemical Name:
- Olanzapine impurity CNB
- Structure:
- Chemical Name:
- Pitavastatin Impurity 74
- CAS:
- 167934-30-7
- MF:
- C29H30FNO4
- Structure:
- Chemical Name:
- Etoricoxib Impurity 35
- CAS:
- 855307-79-8
- MF:
- C18H13ClN2O2S
- Chemical Name:
- Febuxostat Impurity 102
- Chemical Name:
- Ticagrelor Impurity 131
- Chemical Name:
- door bird impurities
- Chemical Name:
- Topiroxostat Impurity 41
- Structure:
- Chemical Name:
- Cyclophosphamide Impurity 8
- CAS:
- 90632-33-0
- MF:
- C7H17N2O4P
- Structure:
- Chemical Name:
- 2-Piperidinecarboxylic acid, 1-formyl-, (1S,2R,3S,6R,7E,10S,12S)-3-hydroxy-1-[(1E)-2-[(1R,3R,4R)-4-hydroxy-3-methoxycyclohexyl]-1-methylethenyl]-12-methoxy-2,8,10-trimethyl-5-oxo-6-(2-propen-1-yl)-12-[(2R,3S,5R)-tetrahydro-3-methoxy-5-methyl-6-oxo-2H-pyra
- CAS:
- 143210-33-7
- MF:
- C43H69NO11
- Structure:
- Chemical Name:
- Blonanserin Impurity 15
- CAS:
- 143213-96-1
- MF:
- C17H17ClFNO
- Structure:
- Chemical Name:
- Methanimidamide, N'-(2-cyano-4-nitrophenyl)-N,N-dimethyl-, (1E)-
- CAS:
- 1203904-18-0
- MF:
- C10H10N4O2
- Structure:
- Chemical Name:
- 1H-Pyrazole-1-propanoic acid, β-cyclopentyl-4-(7H-pyrrolo[2,3-d]pyrimidin-4-yl)-, (βR)-
- CAS:
- 2102675-40-9
- MF:
- C17H19N5O2
- Chemical Name:
- sodium ((S)-4-(4-(2-(2-amino-4-oxo-4,7-dihydro-1H-pyrrolo[2,3-d] pyrimidin-5-yl)ethyl)benzamido)-4-carboxylatobutanoyl)-L-glutamate
- Structure:
- Chemical Name:
- 1H-Purin-2-amine, 6,9-dihydro-9-[(1S,3R,4S)-2-methylene-4-(phenylmethoxy)-3-[(phenylmethoxy)methyl]cyclopentyl]-6-(phenylmethoxy)-N-(triphenylmethyl)-
- CAS:
- 2097265-84-2
- MF:
- C52H49N5O3
- Structure:
- Chemical Name:
- Glycine, N-[(1-ethyl-4-hydroxy-7-phenoxy-3-isoquinolinyl)carbonyl]-
- CAS:
- 808120-20-9
- MF:
- C20H18N2O5
- Chemical Name:
- Vonoprazan Impurity 55
- Chemical Name:
- N-(5-((diphenylphosphoryl)methyl)-4-(2-fluorophenyl)-6-isopropylpyrimidin-2-yl)-N-methylmethanesulfonamide
- Structure:
- Chemical Name:
- Ethane, 1,1,1-trichloro-2,2,2-trimethoxy-
- CAS:
- 19932-79-7
- MF:
- C5H9Cl3O3
- Chemical Name:
- Budesonide Impurity 29
- Chemical Name:
- Budesonide Impurity 20
- Structure:
- Chemical Name:
- Glycine, N-[(4-methylphenyl)sulfonyl]glycyl-, ethyl ester
- CAS:
- 2478-45-7
- MF:
- C13H18N2O5S
- Structure:
- Chemical Name:
- Pneumocandin B0, 1-[(4R,5S)-5-[(2-aminoethyl)amino]-N2-[(10R,12S)-10,12-dimethyl-1-oxotetradecyl]-4-hydroxy-L-ornithine]-
- CAS:
- 1404083-47-1
- MF:
- C52H86N10O16
- Structure:
- Chemical Name:
- 2-Piperidinone, 3-chloro-1-(4-nitrophenyl)-
- CAS:
- 2512213-45-3
- MF:
- C11H11ClN2O3
- Chemical Name:
- Avatrombopag Impurity 40
- Chemical Name:
- (E)-3-(4-((3-(1-(4-((1H-imidazol-1-yl)methyl)phenyl)-2-carboxyethyl)-1H-imidazol-3-ium-1-yl)methyl)phenyl)acrylate
- Chemical Name:
- Cisatracurium besylate impurity 21
- Chemical Name:
- Dacomitinib Impurity
- Structure:
- Chemical Name:
- 6-O-DESMETHYL DONEPEZIL
- CAS:
- 120013-56-1
- MF:
- C23H27NO3
- Structure:
- Chemical Name:
- 2-(2-METHYL-4-NITRO-IMIDAZOL-1-YL)-ETHANOL
- CAS:
- 705-19-1
- MF:
- C6H9N3O3
- Structure:
- Chemical Name:
- 2,6-DIMETHYL-4-(3-NITRO-PHENYL)-PYRIDINE-3,5-DICARBOXYLIC ACID DIMETHYL ESTER
- CAS:
- 76258-20-3
- MF:
- C17H16N2O6
- Structure:
- Chemical Name:
- 3-(2-TRIFLUOROMETHYL-PHENYL)-PROPAN-1-OL
- CAS:
- 191155-81-4
- MF:
- C10H11F3O
- Structure:
- Chemical Name:
- N,N-bis((5-(2-fluorophenyl)-1H-pyrrol-3-yl)methyl)pyridine-3-sulfonamide
- CAS:
- 2514957-29-8
- MF:
- C27H22F2N4O2S
- Structure:
- Chemical Name:
- 2,4(1H,3H)-Pyrimidinedione, 1-β-L-ribofuranosyl-, 4-oxime (9CI)
- CAS:
- 402725-23-9
- MF:
- C9H13N3O6
- Structure:
- Chemical Name:
- 1H-Indole-2-sulfonic acid, 6-hydroxy-1-methyl-
- CAS:
- 2271443-87-7
- MF:
- C9H9NO4S
- Structure:
- Chemical Name:
- 4,4'-iminodiphenol
- CAS:
- 1752-24-5
- MF:
- C12H11NO2
- Structure:
- Chemical Name:
- methyl 4-hydroxy-2-oxopyrrolidine-1-acetate
- CAS:
- 85614-52-4
- MF:
- C7H11NO4
- Chemical Name:
- Sitagliptin EP Impurity 5
- Chemical Name:
- Simvastatin Impurity 6
- Chemical Name:
- (S)-Baclofen-d4
- Chemical Name:
- Anastrozole Impurity 14
- Chemical Name:
- Pemetrexed Impurity 42
- Structure:
- Chemical Name:
- 2-(6-Aminopurin-9-yl)ethanol
- CAS:
- 707-99-3
- MF:
- C7H9N5O
- Structure:
- Chemical Name:
- 9-Azabicyclo[3.3.1]Nonane-9-Acetic Acid, 3-(Ethoxycarbonyl)-7-Oxo-, Ethyl Ester
- CAS:
- 115956-03-1
- MF:
- C15H23NO5
- Chemical Name:
- Cefathiamidine Impurity F
- Structure:
- Chemical Name:
- 1-(Bromophenylmethyl)-4-chlorobenzene
- CAS:
- 948-54-9
- MF:
- C13H10BrCl
- Chemical Name:
- Flomoxef oxidation impurities
- Chemical Name:
- Toltrazuril Impurity 1
- Chemical Name:
- ((2R,3R,5S)-5-(4-amino-2-oxopyrimidin-1(2H)-yl)-4,4-difluoro-3-hydroxytetrahydrofuran-2-yl)methyl benzoate
- Chemical Name:
- Aprepitant Impurity 53
- Chemical Name:
- Cetrorelix Impurity 21
- Chemical Name:
- Brivaracetam Impurity 43
- Chemical Name:
- Canagliflozin Impurity 25 Complete Set
- Chemical Name:
- Peramivir Intermediate Impurity 37
- Chemical Name:
- Peramivir Diastereomer Impurity 1
- Chemical Name:
- Vinpocetine impurity 18 drops
- Chemical Name:
- Canagliflozin Impurities 999
- Chemical Name:
- 1,4,8,11-tetraazacyclotetradecane sodium chelation
- Chemical Name:
- Apixaban Impurity D(BMS-719288)+
- Structure:
- Chemical Name:
- 4-Methoxy-2,3,5-trimethylpyride-N-oxide
- CAS:
- 86604-80-0
- MF:
- C9H13NO2
- Structure:
- Chemical Name:
- 1-BOC-4-(5-NITRO-2-PYRIDYL)PIPERAZINE
- CAS:
- 193902-78-2
- MF:
- C14H20N4O4