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Pharmaceutical Impurity Reference Standards
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- Structure:
- Chemical Name:2-Pyridinemethanol, 4-hydroxy-3,5-dimethyl- (9CI)
- CAS:727375-13-5
- MF:C8H11NO2
- Chemical Name:Bumetanide Impurity 22
- CAS:
- MF:
- Chemical Name:Rocuronium Bromide Impurity 32 、33
- CAS:
- MF:
- Chemical Name:Flucloxacillin Sodium Impurity X
- CAS:
- MF:
- Chemical Name:Pitavastatin Impurity 98
- CAS:
- MF:
- Chemical Name:Perospirone Impurity 29
- CAS:
- MF:
- Chemical Name:Perospirone Impurity 24
- CAS:
- MF:
- Chemical Name:Perospirone Impurity 7
- CAS:1002359-81-0
- MF:
- Chemical Name:Paxlovid Impurity 17
- CAS:
- MF:
- Chemical Name:Related impurities of fluoxetine sodium 19
- CAS:
- MF:
- Chemical Name:Fondaparinux sodium impurity 16
- CAS:
- MF:
- Chemical Name:Fondaparinux Sodium Impurity 11
- CAS:
- MF:
- Chemical Name:Oxacillin Impurity E
- CAS:
- MF:
- Structure:
- Chemical Name:AZOBENZENE-3-CARBOXYLICACID
- CAS:14474-22-7
- MF:C13H10N2O2
- Chemical Name:Bosutinib Impurity 40
- CAS:
- MF:
- Chemical Name:Ticagrelor Impurity J&K
- CAS:
- MF:
- Chemical Name:Olodaterol Impurity 24
- CAS:
- MF:
- Structure:
- Chemical Name:Chloromethyl ethyl carbonate
- CAS:35179-98-7
- MF:C4H7ClO3
- Chemical Name:Bimatoprost Impurity 10
- CAS:
- MF:
- Chemical Name:Carbetocin S-Oxide II
- CAS:
- MF:
- Structure:
- Chemical Name:Empagliflozin Impurity 82
- CAS:2452301-16-3
- MF:C17H16ClIO2
- Chemical Name:Empagliflozin Impurity 88
- CAS:
- MF:
- Structure:
- Chemical Name:Tofacitinib Impurity K
- CAS:2328165-36-0
- MF:C16H21N5O3
- Structure:
- Chemical Name:Olopatadine Impurity 13
- CAS:55453-90-2
- MF:C18H16O4
- Chemical Name:Avibactam sodium Impurity CIA
- CAS:
- MF:
- Structure:
- Chemical Name:4-((2-amino-2-oxoethyl)amino)butanoic acid
- CAS:1096803-44-9
- MF:C6H12N2O3
- Structure:
- Chemical Name:Lenvatinib impurity LFZZ-17
- CAS:
- MF:C11H9NO4
- Chemical Name:Ornidazole Impurity 25
- CAS:
- MF:
- Chemical Name:Pitavastatin Impurity 72
- CAS:
- MF:
- Chemical Name:Febuxostat Impurity 109
- CAS:
- MF:
- Chemical Name:Brivaracetam Impurity 37
- CAS:
- MF:
- Chemical Name:Ticagrelor Impurity 133
- CAS:
- MF:
- Structure:
- Chemical Name:4-[(1,3-Dihydro-1-hydroxy-2,1-benzoxaborol-5-yl)oxy]-benzamide
- CAS:1187188-59-5
- MF:C14H12BNO4
- Structure:
- Chemical Name:2-Propenoic acid, 3-[4-(hydroxymethyl)phenyl]-
- CAS:219915-41-0
- MF:C10H10O3
- Structure:
- Chemical Name:L-Alanine, 3-[(R)-(carboxymethyl)sulfinyl]-
- CAS:61475-35-2
- MF:C5H9NO5S
- Structure:
- Chemical Name:Phenol, 2-(2-phenyldiazenyl)-
- CAS:2362-57-4
- MF:C12H10N2O
- Structure:
- Chemical Name:3-Quinolinecarboxylic acid, 1-cyclopropyl-7-fluoro-1,4-dihydro-6,8-dimethoxy-4-oxo-
- CAS:2410658-30-7
- MF:C15H14FNO5
- Chemical Name:Miglitol Isomer ImpurityB
- CAS:
- MF:
- Chemical Name:43,50-Dicarboxy-cyanoco balamin
- CAS:
- MF:
- 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
- Structure:
- Chemical Name:(-)-menthyl benzoate
- CAS:6284-35-1
- MF:C17H24O2
- Structure:
- Chemical Name:3-methyleneisobenzofuran-1(3H)-one
- CAS:3453-63-2
- MF:C9H6O2
- Structure:
- Chemical Name:Irbesartan impurity A
- CAS:
- MF:C25H28N6O
- Structure:
- Chemical Name:N-DesMethyl SuMatriptan
- CAS:88919-51-1
- MF:C13H19N3O2S
- Structure:
- Chemical Name:2-epi-(-)-EMtricitabine
- CAS:145416-34-8
- MF:C8H10FN3O3S
- Structure:
- Chemical Name:Parent nucleus of cefotiaM hydrochloride
- CAS:372092-19-8
- MF:C13H21N7O3S2
- Structure:
- Chemical Name:Bisacodyl Related Compound E (20 mg) (2-[(4-Acetoxyphenyl)(pyridin-2-yl)methyl]phenyl acetate)
- CAS:111664-35-8
- MF:C22H19NO4
- Structure:
- Chemical Name:N-METHYL-3-CHLORO-3-PHENYL PROPYLAMINE HCL
- CAS:128036-32-8
- MF:C10H15Cl2N
- Structure:
- Chemical Name:2,4,5-TRIFLUORO-3-METHOXYBENZOIC ACID
- CAS:11281-65-5
- MF:C8H5F3O3
- Structure:
- Chemical Name:METHYL TRIPHENYLMETHYL ETHER
- CAS:596-31-6
- MF:C20H18O
- 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
- CAS:
- MF:C15H25NO3
- Chemical Name:NITRENDIPINE IMPURITY A
- CAS:
- MF:
- Structure:
- Chemical Name:TAMSULOSIN IMPURITY D
- CAS:
- MF:C20H28N2O5S
- Structure:
- Chemical Name:Macitentan Hydroxy amine Impurity
- CAS:2211059-05-9
- MF:C12H12BrN3O2
- Structure:
- Chemical Name:1,3-diethyl-1,3-dimethylurea
- CAS:31468-19-6
- MF:C7H16N2O
- Structure:
- Chemical Name:2,4(1H,3H)-Pyrimidinedione, 6-[(3R)-3-amino-1-piperidinyl]-3-methyl-
- CAS:2276323-24-9
- MF:C10H16N4O2
- Structure:
- Chemical Name:7H-Purine-7-acetic acid, 1,2,3,6-tetrahydro-1,3-dimethyl-2,6-dioxo-, ethyl ester
- CAS:7029-96-1
- MF:C11H14N4O4
- Chemical Name:N-(2-Amino-4,5,6,7-tetrahydro-benzothiazol-6-yl)-acrylamide
- CAS:
- MF:
- Chemical Name:Rifampin Impurity 6
- CAS:
- MF:
- Chemical Name:Cefuroxime Dioxide Impurity(Cefuroxime Sulfoxide)
- CAS:
- MF:
- Structure:
- Chemical Name:Hexanoic acid, 3-(hydroxymethyl)-
- CAS:81381-87-5
- MF:C7H14O3
- Structure:
- Chemical Name:1-Pyrrolidinecarboxylic acid, 3,3'-dithiobis[5-[(dimethylamino)carbonyl]-, 1,1'-bis[(4-nitrophenyl)methyl] ester, (3S,3'S,5S,5'S)-
- CAS:936226-36-7
- MF:C30H36N6O10S2
- Structure:
- Chemical Name:D-Glucitol, 1,5-anhydro-1-C-[4-chloro-3-[[4-(1-methylethoxy)phenyl]methyl]phenyl]-, (1S)-
- CAS:946525-39-9
- MF:C22H27ClO6
- Chemical Name:Topiroxostat Impurity 42
- CAS:
- MF:
- Structure:
- Chemical Name:Crisaborole intermediate
- CAS:1187188-60-8
- MF:C14H13BO4
- Chemical Name:Regorafenib Impurity MHY
- CAS:
- MF:
- Structure:
- Chemical Name:2-Thiazolamine, 5-(4-cyclohexyl-1-piperazinyl)-4-(4,5-dichloro-2-thienyl)-
- CAS:570407-63-5
- MF:C17H22Cl2N4S2
- Structure:
- Chemical Name:INDEX NAME NOT YET ASSIGNED
- CAS:2417213-74-0
- MF:C42H42N4O12S
- Structure:
- Chemical Name:Lumateperone Impurity 6
- CAS:313368-82-0
- MF:C23H26FN3O
- Structure:
- Chemical Name:1H-?Indole-?5,?6-?diol, 1-?[3-?(4-?hydroxyphenyl)?-?1-?methylpropyl]?-
- CAS:2514709-72-7
- MF:C18H19NO3
- Chemical Name:6,6'-oxybis(3-((4-oxo-3,4-dihydrophthalazin-1-yl)methyl)benzoic acid)
- CAS:
- MF:
- Structure:
- Chemical Name:4-Pyrimidineethanol, 6-bromo-α-(2,4-difluorophenyl)-5-fluoro-β-methyl-α-(1H-1,2,4-triazol-1-ylmethyl)-
- CAS:1307315-04-3
- MF:C16H13BrF3N5O
- Structure:
- Chemical Name:Cycloocta[b]pyridine, 2-(4-ethyl-1,4-dioxido-1-piperazinyl)-4-(4-fluorophenyl)-5,6,7,8,9,10-hexahydro-
- CAS:2247538-61-8
- MF:C23H30FN3O2
- Chemical Name:Vonoprazan Impurity B-3
- CAS:
- MF:
- Structure:
- Chemical Name:3-Azetidineacetamide, 1-(ethylsulfonyl)-3-[4-(7H-pyrrolo[2,3-d]pyrimidin-4-yl)-1H-pyrazol-1-yl]-
- CAS:2271228-51-2
- MF:C16H19N7O3S
- Chemical Name:Budesonide Impurity 26
- CAS:
- MF:
- Chemical Name:Peramivir Impurity 48
- CAS:
- MF:
- Chemical Name:Tolvaptan dehydroxylated impurity
- CAS:
- MF:
- Structure:
- Chemical Name:3-Quinolinemethanol, 2-cyclopropyl-4-phenyl-
- CAS:2153433-73-7
- MF:C19H17NO
- Chemical Name:Avatrombopag Impurity 37
- CAS:
- MF:
- Chemical Name:Piperacillin ImpurityABCDEFGHI
- CAS:
- MF:
- Structure:
- Chemical Name:5,6-DIMETHOXY-2-PYRIDIN-4-YLMETHYL-INDAN-1-ONE
- CAS:4803-57-0
- MF:C17H17NO3
- Structure:
- Chemical Name:3-(Dimethylamino)-1-(2-thienyl)-1-propanol
- CAS:13636-02-7
- MF:C9H15NOS