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Pharmaceutical Impurity Reference Standards
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- Structure:
- Chemical Name:2-P-TOLYLOXYMETHYL-OXIRANE
- CAS:2186-24-5
- MF:C10H12O2
- Structure:
- Chemical Name:3-Hydroxyazobenzene
- CAS:2437-11-8
- MF:
- Structure:
- Chemical Name:Astragalin 7-O-β-D-glucopyranoside
- CAS:25615-14-9
- MF:C27H30O16
- Structure:
- Chemical Name:4-(5-CHLORO-2-THIENYL)-1,3-THIAZOL-2-AMINE
- CAS:123971-45-9
- MF:C7H5ClN2S2
- Structure:
- Chemical Name:α,α-Dibromo-o-tolunitrile
- CAS:655-63-0
- MF:C8H5Br2N
- Structure:
- Chemical Name:7-CHLORO-1-ETHYL-6-FLUORO-4-OXO-1,4-DIHYDRO-[1,8]NAPHTHYRIDINE-3-CARBOXYLIC ACID
- CAS:79286-73-0
- MF:C11H8ClFN2O3
- Structure:
- Chemical Name:HYDRIDE-L
- CAS:41639-74-1
- MF:C18H22O4
- Structure:
- Chemical Name:2-Amino-4-trifluoromethoxybenzothiazole
- CAS:235101-36-7
- MF:C8H5F3N2OS
- Structure:
- Chemical Name:7-[(4S)-4-Amino-6-azaspiro[2.4]heptan-6-yl]-8-chloro-6-fluoro-1-[(1R,2S)-2-fluorocyclopropyl]-4-oxoquinoline-3-carboxylic acid
- CAS:127254-10-8
- MF:C19H18ClF2N3O3
- Structure:
- Chemical Name:Sitagliptin Carbamoyl -D-Glucuronide
- CAS:940002-59-5
- MF:C23H23F6N5O9
- Structure:
- Chemical Name:5-Hydroxy Desloratadine
- CAS:117811-12-8
- MF:C19H19ClN2O
- Structure:
- Chemical Name:4-PyridinecarboxaMide, N-(2,6-diMethylphenyl)-
- CAS:68280-05-7
- MF:C14H14N2O
- Structure:
- Chemical Name:4-N-Desacetyl-5-N-acetyl OseltaMivir
- CAS:956267-10-0
- MF:C16H28N2O4
- Structure:
- Chemical Name:rac N-DesMethyl-N-(4-Methoxyphenethyl) Venlafaxine
- CAS:1346601-14-6
- MF:C25H35NO3
- Structure:
- Chemical Name:11-Keto Oxcarbazepine
- CAS:537693-29-1
- MF:C15H10N2O3
- Structure:
- Chemical Name:Isopropyl 4-(3-AMinophenyl)-1,4-dihydro-5-(2-Methoxyethoxycarbonyl)-2,6-diMethylpyridine-3-carboxylate
- CAS:155861-24-8
- MF:C21H28N2O5
- Structure:
- Chemical Name:N1-Losartanyl-losartan (Losartan IMpurity)
- CAS:230971-71-8
- MF:C44H44Cl2N12O
- Structure:
- Chemical Name:N2-Losartanyl-losartan (Losartan IMpurity)
- CAS:230971-72-9
- MF:C44H44Cl2N12O
- Structure:
- Chemical Name:O-Benzyl Posaconazole
- CAS:170985-86-1
- MF:C44H48F2N8O4
- Structure:
- Chemical Name:10-trans-Atorvastatin Acetonide tert-Butyl Ester
- CAS:1105067-90-0
- MF:C40H47FN2O5
- Structure:
- Chemical Name:3-Bromo Carbidopa
- CAS:1246819-09-9
- MF:C10H13BrN2O4
- Structure:
- Chemical Name:(4S,6R)-6-(Cyanomethyl)-2,2-dimethyl-1,3-dioxane-4-acetic Acid tert-Butyl Ester
- CAS:186508-95-2
- MF:C14H23NO4
- Structure:
- Chemical Name:(5R)-6-Cyano-5-hydroxy-3-oxo-hexanoic Acid tert-Butyl Ester
- CAS:125988-01-4
- MF:C11H17NO4
- Structure:
- Chemical Name:(4-Carboxy-3-ethoxy)phenyl Acetic Acid (Repaglinide Impurity)
- CAS:220438-80-2
- MF:C11H12O5
- Structure:
- Chemical Name:2-Chloromethyl-3,5-dimethylpyridin-4-ol
- CAS:220771-03-9
- MF:C8H10ClNO
- Structure:
- Chemical Name:(3S,5R)-6-Cyano-3,5-dihydroxy-hexanoic Acid tert-Butyl Ester
- CAS:186508-94-1
- MF:C11H19NO4
- Structure:
- Chemical Name:2-Methyl-6-[(4-methylphenyl)sulfonyl]-1,4,5,6-tetrahydroimidazo[4,5-d][1]benzazepine
- CAS:717917-14-1
- MF:C19H19N3O2S
- Structure:
- Chemical Name:(1R-4S)-4-[[(1,1-dimethylethoxy)carbonyl]amino]- 2-Cyclopentene-1-carboxylic acid methyl ester
- CAS:251326-99-5
- MF:C12H19NO4
- Structure:
- Chemical Name:O-Isobutyryl (R)-Fesoterodine
- CAS:1208313-13-6
- MF:C30H43NO4
- Structure:
- Chemical Name:Isopropyl Itraconazole
- CAS:89848-49-7
- MF:C34H36Cl2N8O4
- Structure:
- Chemical Name:(R)-(-)-Ibuprofen-d3
- CAS:121702-86-1
- MF:C13H18O2
- Structure:
- Chemical Name:(S,R,S,S)-Orlistat
- CAS:111466-63-8
- MF:C29H53NO5
- Structure:
- Chemical Name:N-Trityl Candesartan Ethyl Ester
- CAS:856414-35-2
- MF:C45H38N6O3
- Structure:
- Chemical Name:3R,4S-4-(4-methoxyphenyl)-1-methylpiperi dinyl] methanol
- CAS:127017-78-1
- MF:C14H21NO2
- Structure:
- Chemical Name:6H-Purin-6-one, 2-amino-1,9-dihydro-9-[(1R,3S,4R)-4-hydroxy-3-(hydroxymethyl)-2-methylenecyclopentyl]-
- CAS:188399-46-4
- MF:C12H15N5O3
- Structure:
- Chemical Name:4,4'-(2-HYDROXY-1,3-PROPANDIYLDIOXY)BIS(2-PHENYLACETAMIDE)
- CAS:141650-31-9
- MF:C19H22N2O5
- Structure:
- Chemical Name:Valsartan cyano analog methyl ester
- CAS:137863-90-2
- MF:C25H30N2O3
- Structure:
- Chemical Name:(8S)-2-BroMo α-Ergocryptine
- CAS:65700-36-9
- MF:C32H40BrN5O5
- Structure:
- Chemical Name:3-[4-(4-Chlorobenzoyl)phenoxy]-2-butanone (Fenofibrate IMpurity)
- CAS:217636-47-0
- MF:C17H15ClO3
- Structure:
- Chemical Name:5-(2-Chlorobenzyl)-thieno[3,2-c]pyridiniuM Chloride
- CAS:53885-64-6
- MF:C14H11Cl2NS
- Structure:
- Chemical Name:ClarithroMycin 9-OxiMe
- CAS:103450-87-9
- MF:C38H70N2O13
- Structure:
- Chemical Name:Desloratadine N-Hydroxypiperidine
- CAS:1193725-73-3
- MF:C19H19ClN2O
- Structure:
- Chemical Name:O-DesMethyl Venlafaxine Cyclic IMpurity
- CAS:1346601-55-5
- MF:C16H23NO2
- Structure:
- Chemical Name:rac-cis-2,3-Dichloro Sertraline Hydrochloride
- CAS:1198084-29-5
- MF:C17H18Cl3N
- Structure:
- Chemical Name:11β-Hydroperoxy Dienogest
- CAS:106111-43-7
- MF:C20H25NO4
- Structure:
- Chemical Name:2'-Nor ThiaMine
- CAS:7770-93-6
- MF:C11H15ClN4OS
- Structure:
- Chemical Name:N-Ethoxycarbonyl 7-ADCA
- CAS:72820-16-7
- MF:C11H14N2O5S
- Structure:
- Chemical Name:(E)-Olopatadine
- CAS:113806-06-7
- MF:C21H23NO3
- Structure:
- Chemical Name:NeMadipine B
- CAS:79925-38-5
- MF:C19H21Cl2NO4
- Structure:
- Chemical Name:N-[(3,4-DiMethoxy-2-pyridinyl)Methyl] Pantoprazole
- CAS:957470-59-6
- MF:C24H24F2N4O6S
- Structure:
- Chemical Name:4-Epi-6-epi Doxycycline
- CAS:97583-08-9
- MF:C22H24N2O8
- Structure:
- Chemical Name:Ethyl 3,4-O-Isopropylidene-5-O-methanesulfonylshikimate
- CAS:204254-84-2
- MF:C13H20O7S
- Structure:
- Chemical Name:2-PyrazinecarboxaMide, N,N',N''-[2,4,6-boroxintriyltris[[(1R)-3-Methylbutylidene]iMino[(1S)-2-oxo-1-(phenylMethyl)-2,1-ethanediyl]]]tris-
- CAS:390800-88-1
- MF:C57H69B3N12O9
- Structure:
- Chemical Name:D-hydroxyphenylglycylamoxicillin)
- CAS:188112-75-6
- MF:C24H26N4O7S
- Structure:
- Chemical Name:2-Benzylidene isobutyryl acetanilide
- CAS:125971-57-5
- MF:C19H19NO2
- Structure:
- Chemical Name:ISOPROPYLAMINE HYDROCHLORIDE
- CAS:15572-56-2
- MF:C3H10ClN
- Chemical Name:Bimatoprost Impurity 17
- CAS:
- MF:
- Chemical Name:Bumetanide Impurity 10
- CAS:
- MF:
- Chemical Name:Cefoxitin EP Impurity E (R-methoxy cefoxitin)
- CAS:
- MF:
- Structure:
- Chemical Name:4(1H)-Pyrimidinone, 5-amino-6-chloro-2-(propylthio)-
- CAS:2512210-21-6
- MF:C7H10ClN3OS
- Structure:
- Chemical Name:Carbamic acid, N-[(1S)-1-methyl-2-oxo-2-[3-(phenylmethoxy)phenyl]ethyl]-, phenylmethyl ester
- CAS:2151127-61-4
- MF:C24H23NO4
- Structure:
- Chemical Name:1-(chloromethyl)-4-(dichloromethyl)benzene
- CAS:7398-44-9
- MF:C8H7Cl3
- Structure:
- Chemical Name:4,4'-(propane-1,3-diyl)bismorpholine
- CAS:48152-09-6
- MF:C11H22N2O2
- Structure:
- Chemical Name:Acetamide, N-(4-hydroxyphenyl)-N-nitroso-
- CAS:146897-60-1
- MF:C8H8N2O3
- Structure:
- Chemical Name:3-Azetidineacetonitrile, 1-(ethylsulfonyl)-3-[4-(1H-pyrazol-4-yl)-7H-pyrrolo[2,3-d]pyrimidin-7-yl]-
- CAS:2402776-83-2
- MF:C16H17N7O2S
- Chemical Name:Iohexol ImpuritiesE
- CAS:
- MF:
- Structure:
- Chemical Name:TERT-BUTYL (R)-6-CHLORO-5-HYDROXY-3-OXOHEXANOATE
- CAS:404958-08-3
- MF:C10H17ClO4
- Chemical Name:Roxadustat Impurity 17
- CAS:
- MF:
- Chemical Name:Perospirone Impurity 20
- CAS:1002359-81-0
- MF:
- Chemical Name:Dolutegravir Impurity 19
- CAS:
- MF:
- Chemical Name:Cephalexin Impurity I
- CAS:
- MF:
- Chemical Name:Fondaparinux sodium impurity 6
- CAS:
- MF:
- Chemical Name: Fondaparinux sodium impurity 2
- CAS:
- MF:
- Chemical Name:Oxacillin sodium Impurity I
- CAS:
- MF:
- Chemical Name:Mixture of Cefoxitin Impurity E&F
- CAS:
- MF:
- Chemical Name:Revefenacin Impurity 22
- CAS:
- MF:
- Chemical Name:Lasmiditan Impurity 7
- CAS:
- MF:
- Chemical Name:Febuxostat impurity BAC
- CAS:
- MF:
- Structure:
- Chemical Name:4-(3,4-DICHLOROPHENYL)-1,2,3,4-TETRAHYDRO-1-NAPHTHALENOL
- CAS:866018-46-4
- MF:C16H14Cl2O
- Chemical Name:Lasmiditan Impurity 9
- CAS:
- MF:
- Chemical Name:Letermovir Impurity 2
- CAS:
- MF:
- Structure:
- Chemical Name:1H-Imidazole-2-carboxylic acid
- CAS:16042-25-4
- MF:C4H4N2O2
- Chemical Name:Olodaterol Impurity 19
- CAS:
- MF:
- Chemical Name:Ethacridine Impurity 12
- CAS:
- MF:
- Structure:
- Chemical Name:2-[4-[(2RS)-2-HYDROXY-3[(1-METHYLETHYL)AMINO]PROPOXY]PHENYL]ACETONITRILE
- CAS:29277-73-4
- MF:C14H20N2O2
- Structure:
- Chemical Name:(-)-Nebivolol
- CAS:118457-16-2
- MF:C22H25F2NO4
- Structure:
- Chemical Name:2-Hydroxymethyl Olanzapine
- CAS:174756-45-7
- MF:C17H20N4OS
- Structure:
- Chemical Name:5-Hydroxymethyl Flucloxacillin
- CAS:75524-31-1
- MF:C19H17ClFN3O6S
- Structure:
- Chemical Name:6-Hydroxy-5-methoxy-1-indanone
- CAS:90843-62-2
- MF:C10H10O3
- Structure:
- Chemical Name:9-cis Acitretin
- CAS:419534-31-9
- MF:C21H26O3
- Structure:
- Chemical Name:N-Desmethylvinblastine
- CAS:18172-50-4
- MF:C45H56N4O9
- Structure:
- Chemical Name:Rabeprazole Sulfone
- CAS:117976-47-3
- MF:C18H21N3O4S
- Structure:
- Chemical Name:6-BROMO-3 H-ISOBENZOFURAN-1-ONE
- CAS:19477-73-7
- MF:C8H5BrO2
- Structure:
- Chemical Name:TOPOTECANACETATE
- CAS:123948-88-9
- MF:C25H27N3O7
- Structure:
- Chemical Name:dimethyl 2,6-dimethyl-4-(4-nitrophenyl)-1,4-dihydropyridine-3,5-dicarb oxylate
- CAS:21829-09-4
- MF:C17H18N2O6
- Structure:
- Chemical Name:Metronidazole IMpurity (1-Methyl-4-Nitro-1H-IMidazole)
- CAS:143508-97-8
- MF:C2H3NO
- Structure:
- Chemical Name:benidipine
- CAS:119009-45-9
- MF:C28H31N3O6
- Structure:
- Chemical Name:(S)-Phenylephrine hydrochloride
- CAS:939-38-8
- MF:C9H14ClNO2
- Structure:
- Chemical Name:6α-Methyl Hydrocortisone 21-Acetate
- CAS:1625-11-2
- MF:C24H34O6