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Pharmaceutical Impurity Reference Standards
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- Structure:
- Chemical Name:
- 5-Pyrimidinamine, 4,6-dichloro-N-hydroxy-2-(propylthio)-
- CAS:
- 2517939-84-1
- MF:
- C7H9Cl2N3OS
- Structure:
- Chemical Name:
- (R)-4-(4-methyl-6-oxo-1,4,5,6-tetrahydropyridazin-3-yl)benzenediazonium tetrafluoroborate
- CAS:
- 1630761-21-5
- MF:
- C11H11N4O+
- Chemical Name:
- 8-chloro-11-(1-((5-methylpyridin-3-yl)methyl)piperidin-4-ylidene)-6,11-dihydro-5H-benzo[5,6]cyclohepta[1,2-b]pyridine 1-oxide
- Chemical Name:
- N-acetyl-β-D-glucosidase
- Chemical Name:
- CetearylGlucoside
- CAS:
- 246159-33-1
- Chemical Name:
- Bisoprolol Impurity 40
- Structure:
- Chemical Name:
- 2H-Naphtho[1,2-b]pyran-6-ol, 2,5-dimethyl-2-[(3E,7E)-4,8,12-trimethyl-3,7,11-tridecatrienyl]- (9CI)
- CAS:
- 65941-19-7
- MF:
- C31H40O2
- Structure:
- Chemical Name:
- Amifostine Impurity 15
- CAS:
- 10297-31-1
- MF:
- C7H17Br3N2
- Chemical Name:
- Doxylamine Impurity G
- Structure:
- Chemical Name:
- 2,4-Pyrimidinediol, 6-chloro- (9CI)
- CAS:
- 107577-09-3
- MF:
- C4H3ClN2O2
- Chemical Name:
- Phenoxymethylpenicillin Potassium Impurity 8
- Chemical Name:
- Tegoprazan Impurity 4
- Structure:
- Chemical Name:
- Lexithromycin
- CAS:
- 53066-26-5
- MF:
- C38H70N2O13
- Structure:
- Chemical Name:
- methylprednisolone 17-hemisuccinate
- CAS:
- 77074-42-1
- MF:
- C26H34O8
- Chemical Name:
- 8-hydroxymethylriboflavin
- CAS:
- 52134-62-0
- MF:
- C17H20N4O7
- Structure:
- Chemical Name:
- RS 42358-197
- CAS:
- 135729-55-4
- MF:
- C19H23ClN2O
- Structure:
- Chemical Name:
- acetylthiamine
- CAS:
- 3419-28-1
- Structure:
- Chemical Name:
- 4-PYRIDIN-4-YL-BUTYRIC ACID
- CAS:
- 102878-73-9
- MF:
- C9H11NO2
- Chemical Name:
- Bumetanide Impurity 23
- Chemical Name:
- Rocuronium Bromide Impurity 34、35、36
- Structure:
- Chemical Name:
- Vinpocetine impurity C
- CAS:
- 70155-05-4
- MF:
- C23H28N2O3
- Chemical Name:
- Cloxacillin Impurity X
- Chemical Name:
- 1-(4-((2-(4-hydroxypiperidin-1-yl)ethyl)(methyl)carbamoyl)benzyl)piperidine-4-carboxamide
- Chemical Name:
- Azilsartan Impurity 107
- Structure:
- Chemical Name:
- PIVALOYLOXYMETHYL 6-AMINOPENICILANATE
- CAS:
- 25031-08-7
- MF:
- C14H22N2O5S
- Structure:
- Chemical Name:
- (9S)-9-Amino-9-deoxoerythromycin
- CAS:
- 26116-56-3
- MF:
- C37H70N2O12
- Structure:
- Chemical Name:
- NSC525120
- CAS:
- 10221-08-6
- MF:
- C8H7Cl3
- Structure:
- Chemical Name:
- 3-(2-cyanoethyl-(2-hydroxyethyl)amino)propanenitrile
- CAS:
- 6305-56-2
- MF:
- C8H13N3O
- Structure:
- Chemical Name:
- TRANS-4-[[(2-AMINOPHENYL)METHYL]AMINO]-CYCLOHEXANOL
- CAS:
- 46727-91-7
- MF:
- C13H20N2O
- Chemical Name:
- Citalopram Related Compound F
- Structure:
- Chemical Name:
- (1R,3aS,4E,7aR)-4-[(2E)-2-[(3S,5R)-3,5-bis[[(1,1-dimethylethyl)dimethylsilyl]oxy]-2-methylenecyclohexylidene]ethylidene]octahydro-7a-methyl-1-[(1R,4S)-1,4,5-trimethylhexyl]-1H-Indene
- CAS:
- 2229745-37-1
- MF:
- C40H74O2Si2
- Structure:
- Chemical Name:
- (+)-Tamsulosin
- CAS:
- 106138-88-9
- MF:
- C20H28N2O5S
- Structure:
- Chemical Name:
- 2-Pyrrolidinecarboxamide,1-(hydroxyacetyl)-,(S)-(9CI)
- CAS:
- 96166-39-1
- MF:
- C7H12N2O3
- Structure:
- Chemical Name:
- 1H-Pyrazole,3-ethoxy-5-methyl-1-phenyl-(9CI)
- CAS:
- 300543-31-1
- MF:
- C12H14N2O
- Structure:
- Chemical Name:
- (2-PHENOXY)METHYLSULFONYLANILINE
- CAS:
- 51765-51-6
- MF:
- C13H13NO3S
- Structure:
- Chemical Name:
- 4-methoxy-2,3,5-trimethylpyridine
- CAS:
- 109371-19-9
- MF:
- C9H13NO
- Structure:
- Chemical Name:
- deacetylcephalosporin C
- CAS:
- 1476-46-6
- MF:
- C14H19N3O7S
- Structure:
- Chemical Name:
- ETHYLVANILLINBETA-D-GLUCOPYRANOSIDE
- CAS:
- 122397-96-0
- MF:
- C15H20O8
- Structure:
- Chemical Name:
- 4-(2-Cyanophenyl)benzyl alcohol
- CAS:
- 154709-19-0
- MF:
- C14H11NO
- Structure:
- Chemical Name:
- 1-Propanol, 3-[[2-[(1H-benzimidazol-2-ylsulfinyl)methyl]-3-methyl-4-pyridinyl]oxy]-
- CAS:
- 117976-94-0
- MF:
- C17H19N3O3S
- Structure:
- Chemical Name:
- 2',3'-O-isopropylidene cytidine
- CAS:
- 362-42-5
- MF:
- C12H17N3O5
- Structure:
- Chemical Name:
- 4,4''-Dimethoxyazoxybenzene
- CAS:
- 501-58-6
- MF:
- C14H14N2O2
- Structure:
- Chemical Name:
- 3,5-Dibenzyloxy terbutalline
- CAS:
- 28924-25-6
- MF:
- C26H31NO3
- Structure:
- Chemical Name:
- 1H-BENZIMIDAZOLE,2-CHLORO-1-(2-ETHOXYETHYL)
- CAS:
- 87233-54-3
- MF:
- C11H13ClN2O
- Structure:
- Chemical Name:
- 2,2-Dimethyl-4-isopropyl-1,3-benzodioxole (Propofol Impurity L)
- CAS:
- 201166-22-5
- MF:
- C12H16O2
- Structure:
- Chemical Name:
- 24Dichloro-5methoxyacetanilide
- CAS:
- 65182-98-1
- MF:
- C9H9Cl2NO2
- Structure:
- Chemical Name:
- 4,4,4-trifluoro-1-(2-methylphenyl)butane-1,3-dione
- CAS:
- 163266-02-2
- MF:
- C11H9F3O2
- Structure:
- Chemical Name:
- 5-chloro-N-(4-nitrophenyl)pentanamide
- CAS:
- 1039914-85-6
- MF:
- C11H13ClN2O3
- Structure:
- Chemical Name:
- N-(2,6-dimethylphenyl)piperidine-4-carboxamide
- CAS:
- 109403-19-2
- MF:
- C14H20N2O
- Structure:
- Chemical Name:
- 5-{2-[1-(5-Hydroxy-1,5-dimethyl-hexyl)-7a-methyl-octahydro-inden-4-ylidene]-ethylidene}-4-methylene-cyclohexane-1,3-diol
- CAS:
- 73837-24-8
- MF:
- C27H44O3
- Structure:
- Chemical Name:
- C-Desmethyl Metoprolol
- CAS:
- 109632-08-8
- MF:
- C14H23NO3
- Structure:
- Chemical Name:
- (Z)-4-HYDROXYTAMOXIFEN
- CAS:
- 65213-48-1
- MF:
- C26H29NO2
- Structure:
- Chemical Name:
- 10-Methoxyiminostilbene-5-carbonylchloride
- CAS:
- 28721-08-6
- MF:
- C16H12ClNO2
- Chemical Name:
- 1-Ethyl-2-[[(2-methoxy-5-sulphamoyl
- Structure:
- Chemical Name:
- 2-(4-Bromo-3-formylphenoxy)-benzonitrile
- CAS:
- 1160182-46-6
- MF:
- C14H8BrNO2
- Chemical Name:
- Carbetocin S-Oxide I
- Chemical Name:
- Dolutegravir Impurity 15
- Structure:
- Chemical Name:
- 1-(4-NITRO-PHENYL)-1H-PYRIDIN-2-ONE
- CAS:
- 53427-97-7
- MF:
- C11H8N2O3
- Structure:
- Chemical Name:
- PeraMpanel
- CAS:
- 380919-67-5
- MF:
- C23H15N3O2
- Chemical Name:
- Empagliflozin Impurity 86
- Structure:
- Chemical Name:
- Olopatadine Impurity 11 HBr
- CAS:
- 4174-84-9
- MF:
- C21H24Br2NP
- Chemical Name:
- Iohexol Impurity P
- Chemical Name:
- Avibactam sodium Impurity CEA
- Structure:
- Chemical Name:
- Sulbactam Impurity 2
- CAS:
- 111790-24-0
- MF:
- C8H13NO6S
- Structure:
- Chemical Name:
- Vortioxetine Impurity 8 HCl
- CAS:
- 2137722-14-4
- MF:
- C18H23ClN2S
- Chemical Name:
- Relugolix Impurity 1
- Structure:
- Chemical Name:
- Oseltamivir Diastereomer III HCl
- CAS:
- 2413185-95-0
- MF:
- C16H28N2O4
- Structure:
- Chemical Name:
- Rocuronium bromide impurity (3,16,17-triol)
- MF:
- C23H39NO4
- Structure:
- Chemical Name:
- 4-(4-amino-3-chlorophenoxy)-7-methoxyquinoline-6-carboxylic acid
- MF:
- C17H13ClN2O4
- Chemical Name:
- Ornidazole Impurity 26
- Chemical Name:
- Pitavastatin Impurity 73
- Chemical Name:
- Furosemide Impurity 24
- Chemical Name:
- Brivaracetam Impurity 34
- Chemical Name:
- Amoxicillin Impurity ABCDEFGHIJKLM
- Structure:
- Chemical Name:
- β-D-Glucopyranoside, [[(3R,3aS,6S,6aR)-tetrahydro-3a-hydroxy-1H,3H-furo[3,4-c]furan-3,6-diyl]bis(2-methoxy-4,1-phenylene)]bis
- CAS:
- 112747-99-6
- MF:
- C32H42O17
- Structure:
- Chemical Name:
- 1H-1,2,4-Triazole-1-propanol, α-(2,4-difluorophenyl)-α-(1H-1,2,4-triazol-1-ylmethyl)-
- CAS:
- 1222655-38-0
- MF:
- C14H14F2N6O
- Structure:
- Chemical Name:
- 3-Pyrrolidinepropanoic acid, α-[[(1,1-dimethylethoxy)carbonyl]amino]-2-oxo-, (αS,3S)-
- CAS:
- 741267-75-4
- MF:
- C12H20N2O5
- Structure:
- Chemical Name:
- Topiroxostat Impurity 44
- CAS:
- 1824131-48-7
- MF:
- C7H6N4O
- Structure:
- Chemical Name:
- Fexofenadine Impurity 12
- CAS:
- 1010812-98-2
- MF:
- C32H37NO4
- Structure:
- Chemical Name:
- 2,2'-(oxybis((2-chloro-5-iodophenyl)methylene))diphenol
- MF:
- C26H18Cl2I2O3
- Structure:
- Chemical Name:
- Gliclazide Impurity 6
- CAS:
- 1207714-41-7
- MF:
- C8H10N2O3S
- Chemical Name:
- Perospirone Impurity 25
- Chemical Name:
- Paxlovid Impurity 16
- Chemical Name:
- 3-(2-(cyclopent-1-en-1-yl)-2-hydroxy-2-phenylacetoxy)-1,1-dimethylpyrrolidin-1-ium bromide
- Chemical Name:
- Fondaparinux sodium impurity 17
- Chemical Name:
- Fondaparinux sodium impurity 12
- Chemical Name:
- Piperacillin impurity L
- Chemical Name:
- Piperacillin Impurity X
- Structure:
- Chemical Name:
- ETHYLTRITYLETHER
- CAS:
- 968-39-8
- MF:
- C21H20O
- Chemical Name:
- Bosutinib Impurity 41
- Structure:
- Chemical Name:
- (S)-3-Dimethylamino-3-phenylpropanol
- CAS:
- 82769-75-3
- MF:
- C11H17NO
- Chemical Name:
- Valdecoxib N-Oxide
- Chemical Name:
- Olodaterol Impurity 23
- Chemical Name:
- Miglitol Isomer impurities C
- Chemical Name:
- Alpha-D-Methylglucoside
- Structure:
- Chemical Name:
- 4-Desacetyl Vincristine
- CAS:
- 3704-01-6
- MF:
- C44H54N4O9
- Chemical Name:
- Relugolix Impurity 91
- Structure:
- Chemical Name:
- D,L N-Desmethylvenlafaxine
- CAS:
- 149289-30-5
- MF:
- C16H25NO2