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Pharmaceutical Impurity Reference Standards
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- Structure:
- Chemical Name:Zolmitriptan N-Oxide
- CAS:251451-30-6
- MF:C16H21N3O3
- Chemical Name:3-(hydroxymethyl)-9-methyl-1,2,3,9-tetrahydro-4H-carbazol-4-one
- CAS:
- MF:
- Structure:
- Chemical Name:diltiazem hydrochloride
- CAS:103532-27-0
- MF:C22H27ClN2O4S
- Structure:
- Chemical Name:(R)-Terazosin
- CAS:109351-34-0
- MF:C19H25N5O4
- Structure:
- Chemical Name:Methyl (1S,4R)-4-Amino-2-Cyclopentene-1-Carboxylate
- CAS:138923-03-2
- MF:C7H11NO2
- Structure:
- Chemical Name:L-Alanine,propylester(9CI)
- CAS:58989-06-3
- MF:C6H13NO2
- Structure:
- Chemical Name:6-(1-Cyclopropyl-1H-pyrazol-4-yl)-3-[difluoro(6-fluoro-2H-indazol-5-yl)methyl]-1,2,4-triazolo[4,3-b]pyridazine
- CAS:1440964-95-3
- MF:C19H13F3N8
- Structure:
- Chemical Name:N-hydroxyphenetidine
- CAS:38246-95-6
- MF:
- Structure:
- Chemical Name:bergaptol-O-glucopyranoside
- CAS:131623-13-7
- MF:C17H16O9
- Structure:
- Chemical Name:pefloxacin N-oxide
- CAS:85145-21-7
- MF:C17H20FN3O4
- Structure:
- Chemical Name:2,3-dimethyl-1,4-naphthoquinone
- CAS:2197-57-1
- MF:C12H10O2
- Structure:
- Chemical Name:Nemonoxacin Impurity 8
- CAS:2770004-82-3
- MF:C24H29N3O8
- Chemical Name:SALVIAMILTIORRHIZA
- CAS:
- MF:
- Structure:
- Chemical Name:(1-ETHYL-3-PIPERIDINYL)METHYLAMINE
- CAS:102459-02-9
- MF:C8H18N2
- Chemical Name:Lemborexant impurity 14
- CAS:
- MF:
- Structure:
- Chemical Name:8-HYDROXY MIRTAZAPINE
- CAS:102335-57-9
- MF:C17H19N3O
- Structure:
- Chemical Name:1-[2-Amino-1-(4-benzyloxyphenyl)-ethyl]-cyclohexanol
- CAS:93413-61-7
- MF:C23H31NO2
- Structure:
- Chemical Name:N-Deshydroxyethyl Dasatinib
- CAS:910297-51-7
- MF:C20H22ClN7OS
- Structure:
- Chemical Name:4-Acetyl-2-fluorobiphenyl
- CAS:42771-79-9
- MF:C14H11FO
- Structure:
- Chemical Name:m-xylene-4,alpha,alpha'-triol
- CAS:2937-60-2
- MF:C8H10O3
- Chemical Name:Oseltamivir Impurity 107
- CAS:
- MF:
- Chemical Name:Oseltamivir Impurity 66
- CAS:
- MF:
- Structure:
- Chemical Name:7-CHLORO-1,3DIHYDRO-5-FLUOROPHENYL-2-NITRO-METHYLENE-2H-1,4-BENZODIAZEPINE-4-OXIDE
- CAS:60656-76-0
- MF:C16H11ClFN3O3
- Structure:
- Chemical Name:17alpha-Hydroxytrenbolone
- CAS:80657-17-6
- MF:C18H22O2
- Structure:
- Chemical Name:N-Desethyl Sunitinib
- CAS:356068-97-8
- MF:C20H23FN4O2
- Structure:
- Chemical Name:6-(4-{2-[5-(tert-Butyl-dimethyl-silanyloxy)-2-methylene-cyclohexylidene]-ethylidene}-7a-methyl-octahydro-inden-1-yl)-2-methyl-heptan-2-ol
- CAS:140710-90-3
- MF:C33H58O2Si
- Structure:
- Chemical Name:3-Hydroxy loratadine
- CAS:183483-15-0
- MF:C22H23ClN2O3
- Structure:
- Chemical Name:Dehydro Lacidipine
- CAS:130996-24-6
- MF:C26H31NO6
- Structure:
- Chemical Name:Granisetron Impurity F
- CAS:1364914-39-5
- MF:C18H24N4O
- Structure:
- Chemical Name:Solifenacin N-Oxide
- CAS:180272-28-0
- MF:C23H26N2O3
- Structure:
- Chemical Name:2-chloro-N-(4-ethoxyphenyl)-4-nitrobenzamide
- CAS:328258-90-8
- MF:C15H13ClN2O4
- Structure:
- Chemical Name:ACETAMINOPHEN IMPURITY B
- CAS:1693-37-4
- MF:C9H11NO2
- Structure:
- Chemical Name:Lenacapavir impurity
- CAS:3025145-48-3
- MF:C41H36ClF10N7O5S2
- Structure:
- Chemical Name:2-chloro-N-(3-chloro-2-methylphenyl)nicotinamide
- CAS:57841-61-9
- MF:C13H10Cl2N2O
- Structure:
- Chemical Name:(R)-3-Amino-3-phenylpropionic acid
- CAS:13921-90-9
- MF:C9H11NO2
- Structure:
- Chemical Name:4-(2-Ethoxy benzamido)-1-methyl-3-n-propyl pyrazole-5-carboxamide.
- CAS:139756-03-9
- MF:C17H22N4O3
- Structure:
- Chemical Name:N-Hydroxy Riluzole
- CAS:179070-90-7
- MF:C8H5F3N2O2S
- Structure:
- Chemical Name:2-piperazine-4-amino-6,7-dimethoxyquinazoline Hydrochloride
- CAS:70843-11-7
- MF:C14H20ClN5O2
- Structure:
- Chemical Name:1-(3-Aminopropyl)aziridine
- CAS:1072-65-7
- MF:C5H12N2
- Structure:
- Chemical Name:3,5-Di(4-pyridinyl)-1H-1,2,4-triazol-1-amine
- CAS:4923-06-2
- MF:C12H10N6
- Structure:
- Chemical Name:(1α,2β,4β,5α)-9-Methyl-3-oxa-9-azatricyclo[3.3.1.02,4]nonan-7α-ol
- CAS:498-46-4
- MF:C8H13NO2
- Structure:
- Chemical Name:Ambroxol EP Impurity B
- CAS:18683-95-9
- MF:C14H18Br2N2O
- Structure:
- Chemical Name:Aminoarteether Maleate Impurity 1
- CAS:139716-77-1
- MF:C21H36N2O5
- Structure:
- Chemical Name:16-Hydroxyerythromycin
- CAS:82230-93-1
- MF:C37H67NO14
- Structure:
- Chemical Name:4-[1-(4-Chlorophenyl)-1-phenylethoxy]-1-methylhexahydro-1H-azepine
- CAS:61771-18-4
- MF:C21H26ClNO
- Structure:
- Chemical Name:1,4-Dihydro-2,6-dimethyl-4-(3-nitrophenyl)pyridine-3,5-dicarboxylic acid 3-isopropyl 5-(2-hydroxyethyl) ester
- CAS:82219-47-4
- MF:C20H24N2O7
- Structure:
- Chemical Name:3-[(3-TRIFLUOROMETHYL)PHENYL]-1-PROPENE
- CAS:1813-96-3
- MF:C10H9F3
- Structure:
- Chemical Name:(AS)-A-(2-CHLOROPHENYL)-2,3,6,7-TETRAHYDRO-2-OXO-THIENO[3,2-C]PYRIDINE-5(4H)-ACETIC ACID METHYL ESTER
- CAS:527687-26-9
- MF:C16H16ClNO3S
- Structure:
- Chemical Name:1-(P-METHOXYPHENYL)-1-BUTEN-3-ONE
- CAS:943-88-4
- MF:C11H12O2
- Structure:
- Chemical Name:ANAGRELIDE IMPURITY 5
- CAS:444904-63-6
- MF:C8H7Cl2N3
- Structure:
- Chemical Name:ANAGRELIDE IMPURITY 5
- CAS:444904-63-6
- MF:C8H7Cl2N3
- Structure:
- Chemical Name:2-[2-(2-AMINO-9H-PURIN-9-YL)ETHYL]-1,3-PROPANEDIOL
- CAS:104227-86-3
- MF:C10H15N5O2
- Structure:
- Chemical Name:1,4,8,11-Tetrakis[(4-methylphenyl)sulfonyl]-1,4,8,11-tetraazacyclotetradecane
- CAS:71089-74-2
- MF:C38H48N4O8S4
- Chemical Name:Tazobactam Impurity DBT
- CAS:
- MF:
- Structure:
- Chemical Name:diginatin
- CAS:52589-12-5
- MF:C41H64O15
- Structure:
- Chemical Name:Thiophene, 2-(2-fluorophenyl)-5-[(5-iodo-2-methylphenyl)methyl]-
- CAS:2436275-33-9
- MF:C18H14FIS
- Chemical Name:3-Chloro Avanafil
- CAS:
- MF:
- Structure:
- Chemical Name:Revefenacin Impurity 2
- CAS:1158699-78-5
- MF:C14H17NO4
- Structure:
- Chemical Name:(R)-2-(4-Methoxyphenyl)-1-methylethanamine
- CAS:58993-79-6
- MF:C10H15NO
- Structure:
- Chemical Name:N-[5-[(1RS)-2-[benzyl[(1RS)-2-(4-methoxyphenyl)- 1-methylethyl]amino]-1-hydroxyethyl]-2- hydroxyphenyl]formamide
- CAS:2514947-17-0
- MF:C26H30N2O4
- Chemical Name:Peramivir dehydrated deacetylated impurity
- CAS:
- MF:
- Chemical Name:Cilastatin Impurity H
- CAS:
- MF:
- Chemical Name:(trans, trans)-3,3'-(1,4,7,10-tetraazacyclododecane-1,7-diyl)bis(butane-1,2,4-triol)
- CAS:
- MF:
- Chemical Name:Azelastine Impurity K
- CAS:
- MF:
- Chemical Name:(4R,6R)-6-(2-((1S,2S)-2,6-dimethyl-1,2,3,4-tetrahydronaphthalen-1-
- CAS:
- MF:
- Chemical Name:Carbazochrome Sodium Sulfonate Impurity 1
- CAS:
- MF:
- Chemical Name:Rosuvastatin Impurity 147
- CAS:
- MF:
- Chemical Name:Febuxostat Impurity 15 Complete Set
- CAS:
- MF:
- Chemical Name:Cetrorelix Impurity 10
- CAS:
- MF:
- Chemical Name:Cetrorelix Impurity 3 (9-D-Pro)
- CAS:
- MF:
- Chemical Name:Peramivir Intermediate Impurity 42
- CAS:
- MF:
- Chemical Name:Nintedanib impurity A drops
- CAS:
- MF:
- Chemical Name:Tofacitinib impurity N drops
- CAS:
- MF:
- Chemical Name:Carboprost impurity 999
- CAS:
- MF:
- Chemical Name:Bumetanide impurity C drops
- CAS:
- MF:
- Chemical Name:Apixaban Impurity 79
- CAS:
- MF:
- Chemical Name:Troxipide Impurity 6
- CAS:
- MF:
- Chemical Name:Piperacillin Impurity K
- CAS:
- MF:
- Chemical Name:2-(6'-oxo-1'-phenyl-1',6'-dihydro-[2,3'-bipyridin]-5'-yl)benzoic acid
- CAS:
- MF:
- Structure:
- Chemical Name:3-Thiophenecarboxylic acid, 4-methyl-5-(4-nitrophenyl)-2-[(propoxycarbonyl)amino]-, ethyl ester
- CAS:2591260-03-4
- MF:C18H20N2O6S
- Structure:
- Chemical Name:1H-Benzimidazol-2-amine, 5,6-dichloro-N-(1-methylethyl)-1-(2,3,5-tri-O-acetyl-β-L-ribofuranosyl)-
- CAS:176161-56-1
- MF:C21H25Cl2N3O7
- Chemical Name:Pemetrexed disodium Impurity 32
- CAS:
- MF:
- Structure:
- Chemical Name:Androsta-1,4-diene-17-carboxylic acid, 11,16,17-trihydroxy-3-oxo-, (11β,16α,17α)-
- CAS:1185143-75-2
- MF:C20H26O6
- Chemical Name:Tazobactam Impurity LTE
- CAS:
- MF:
- Chemical Name:Isavuconazole Impurity 47
- CAS:
- MF:
- Structure:
- Chemical Name:5,5'-((1R,1'R)-((5,6-diethyl-2,3-dihydro-1H-inden-2-yl)azanediyl)bis(1-hydroxyethane-2,1-diyl))bis(8-(benzyloxy)quinolin-2(1H)-one)
- CAS:753498-27-0
- MF:C49H49N3O6
- Structure:
- Chemical Name: Eltrombopag Impurity 37
- CAS:350024-70-3
- MF:C14H18N2O
- Structure:
- Chemical Name:(S)-N-(2-(1-(3-ethoxy-4-methoxyphenyl)-2-((2-hydroxyethyl)sulfonyl)ethyl)-1,3-dioxoisoindolin-4-yl)acetamide
- CAS:
- MF:C23H26N2O8S
- Structure:
- Chemical Name:2-(4-(2-(4-(1-(2-ethoxyethyl)-1H-benzo[d]imidazol-2-yl)piperidin-1-yl)ethyl)phenyl)-2-methylpropan-1-ol
- CAS:
- MF:C28H39N3O2
- Chemical Name:Tafluprost Impurity 20
- CAS:
- MF:
- Chemical Name:Rosuvastatin Impurity 149
- CAS:
- MF:
- Structure:
- Chemical Name:2-CHLOROMETHYL-5-TRIFLUOROMETHYL-[1,3,4]OXADIAZOLE
- CAS:723286-98-4
- MF:C4H2ClF3N2O
- Chemical Name:Rifampicin Quinone Oxide
- CAS:
- MF:
- Structure:
- Chemical Name:3,4-dihydroxybutanoic acid
- CAS:1518-61-2
- MF:C4H8O4
- Structure:
- Chemical Name:Isocyclosporin A
- CAS:59865-16-6
- MF:C62H111N11O12
- Chemical Name:GINKGOLIC ACIDS
- CAS:
- MF:
- Structure:
- Chemical Name:R-DULOXETINE HYDROCHLORIDE
- CAS:910138-96-4
- MF:C18H20ClNOS