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Pharmaceutical Impurity Reference Standards
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- Chemical Name:Saxagliptin Impurity 4 (Deoxy Saxagliptin)
- CAS:
- MF:
- Structure:
- Chemical Name:Betamethasone EP Impurity D
- CAS:52619-05-3
- MF:C25H33FO7
- Structure:
- Chemical Name:Dihydropenicillin F Potassium Salt
- CAS:31447-86-6
- MF:C14H23KN2O4S
- Structure:
- Chemical Name:Etoricoxib Impurity 7
- CAS:646459-39-4
- MF:C20H21N3O2S
- Structure:
- Chemical Name:Mupirocin Impurity D
- CAS:
- MF:C26H44O9
- Structure:
- Chemical Name:Pazopanib Related Compound 2
- CAS:1226500-02-2
- MF:C26H23ClN10
- Structure:
- Chemical Name:Phenylephrine EP Impurity D
- CAS:1367567-95-0
- MF:C16H19NO2
- Structure:
- Chemical Name:Verapamil Impurity O
- CAS:959011-16-6
- MF:C27H38N2O4
- Structure:
- Chemical Name:1,1′-[(1-Methylethyl)imino]bis[3-[4-(2-methoxyethyl)phenoxy]-2-propanol hydrochloride
- CAS:1486464-40-7
- MF:C27H42ClNO6
- Structure:
- Chemical Name:4'-FLUOROCYCLOPROPANECARBOXANILIDE
- CAS:2354-89-4
- MF:C10H10FNO
- Structure:
- Chemical Name:methyl(E)-4-(methylamino)but-2-enoate
- CAS:915788-22-6
- MF:C6H11NO2
- Structure:
- Chemical Name:methyl(E)-4-(methylamino)but-2-enoate
- CAS:915788-22-6
- MF:C6H11NO2
- Chemical Name:Levomilnacipran impurity
- CAS:
- MF:
- Chemical Name:Sofosbuvir IMpurity 4
- CAS:
- MF:
- Structure:
- Chemical Name:1,3-bis(4-isobutylphenyl)butan-1-one
- CAS:
- MF:C24H32O
- Structure:
- Chemical Name:6-isobutyl-3-methyl-2,3-dihydro-1H-inden-1-one
- CAS:1340024-54-5
- MF:C14H18O
- Structure:
- Chemical Name:Edoxaban impurity 1
- CAS:41374-72-5
- MF:C9H10N2O3
- Chemical Name:Canagliflozin Impurity 18
- CAS:
- MF:
- Chemical Name:Canagliflozin Impurity 23
- CAS:
- MF:
- Chemical Name:Carfilzomib Impurity 4
- CAS:
- MF:
- Structure:
- Chemical Name:Lenvatinib Impurity 2
- CAS:2380197-90-8
- MF:C28H22ClN5O5
- Structure:
- Chemical Name:FeBuxostat Impurity 33
- CAS:100118-38-5
- MF:C12H14O5
- Structure:
- Chemical Name:(S)-3-(4-phenoxyphenyl)-1-(piperidin-3-yl)
- CAS:1642630-12-3
- MF:C22H22N6O
- Structure:
- Chemical Name:Latamoxef Impurity 1
- CAS:75007-70-4
- MF:C19H20N6O7S
- Structure:
- Chemical Name:Amlodipine iMpurity K
- CAS:1809326-44-0
- MF:C18H21ClN2O5
- Structure:
- Chemical Name:Cabozantinib impurity 4
- CAS:95932-39-1
- MF:C11H15NO3
- Structure:
- Chemical Name:Rosuvastatin EP Impurity C
- CAS:1620823-61-1
- MF:C22H27FN3NaO6S
- Structure:
- Chemical Name:6,7-bis(2-methoxyethoxy)-N-phenylquinazolin-4-amine
- CAS:1145671-52-8
- MF:C20H23N3O4
- Structure:
- Chemical Name:(3R,4R,5S)-ethyl 4-acetamido-5-amino-3-isopropoxycyclohex-1-enecarboxylate
- CAS:1052063-36-1
- MF:C14H24N2O4
- Structure:
- Chemical Name:4-(N-(tert-butyl)acetamido)-5-(diallylamino)-3-(pentan-3-yloxy)cyclohex-1-enecarboxylate
- CAS:941296-96-4
- MF:C16H28N2O4
- Structure:
- Chemical Name:(2R,5S)-5-(4-amino-5-fluoro-2-oxopyrimidin-1(2H)-yl)-1,3-oxathiolane-2-carboxylic acid
- CAS:
- MF:C8H8FN3O4S
- Structure:
- Chemical Name:Amlodipine Impurity 10
- CAS:2170104-51-3
- MF:C26H31ClN2O8S
- Structure:
- Chemical Name:Apixaban Impurity 15
- CAS:1466571-07-2
- MF:C21H20N4O4
- Structure:
- Chemical Name:Clopidogrel Impurity 8
- CAS:
- MF:C15H14ClNO2S
- Structure:
- Chemical Name:Acyclovir Impurity I: 7,9'-[Ethylene-bis(oxymethylene)] Bis (2-amino-1-9-dihydro-6H-purin-6-one)
- CAS:1797832-75-7
- MF:C14H16N10O4
- Structure:
- Chemical Name:Nilotinib genotoxic impurity 3
- CAS:915711-42-1
- MF:C19H17F3N4O
- Structure:
- Chemical Name:Dapagliflozin Open Ring
- CAS:2100872-88-4
- MF:C21H27ClO7
- Chemical Name:Rortezide impurity
- CAS:
- MF:
- Chemical Name:Aprepitant Impurity 2
- CAS:
- MF:
- Chemical Name:Cabozantinib Impurity A
- CAS:
- MF:
- Chemical Name:Loxoprofen Impurity E
- CAS:
- MF:
- Structure:
- Chemical Name:(R)-4-Propylpyrrolidin-2-one
- CAS:930123-37-8
- MF:C7H13NO
- Structure:
- Chemical Name:Rocuronium Bromide Intermediate B Impurity E-1
- CAS:1190105-60-2
- MF:C29H48N2O3
- Structure:
- Chemical Name:4-Chloro-2-propylsulfanyl-pyrimidine
- CAS:1351990-36-7
- MF:C7H9ClN2S
- Structure:
- Chemical Name:benzyl (S)-2-(2-(benzofuran-6-carbonyl)-5,7-dichloro-1,2,3,4-tetrahydroisoquinoline-6-carboxamido)-3-(3-(methylsulfonyl)phenyl)propanoate
- CAS:1194550-67-8
- MF:C36H30Cl2N2O7S
- Structure:
- Chemical Name:D-Proline, 1-[(2S)-3-mercapto-2-methyl-1-oxopropyl]-
- CAS:119238-52-7
- MF:C9H15NO3S
- Structure:
- Chemical Name:2,4(1H,3H)-Pyrimidinedione,5-fluoro-1-[2-(hydroxymethyl)-1,3-oxathiolan-5-yl]-, (2S-cis)- (9CI)
- CAS:145281-92-1
- MF:C8H9FN2O4S
- Structure:
- Chemical Name:Cyclopentanecarboxylic acid, 1-[(1-oxopentyl)amino]-
- CAS:15026-80-9
- MF:C11H19NO3
- Structure:
- Chemical Name:L-Phenylalanine, N-L-leucyl-, methyl ester
- CAS:38155-18-9
- MF:C16H24N2O3
- Structure:
- Chemical Name:Ethanol, 2-[(2-chloroethyl)amino]-
- CAS:3890-98-0
- MF:C4H10ClNO
- Structure:
- Chemical Name:5-Methylarabinosylcytosine
- CAS:6829-31-8
- MF:C10H15N3O5
- Structure:
- Chemical Name:Anthranilic acid, N-furfuryl-5-sulfamoyl-
- CAS:4818-85-3
- MF:C12H12N2O5S
- Structure:
- Chemical Name:1,3-Benzodioxol-4-ol
- CAS:69393-72-2
- MF:C7H6O3
- Structure:
- Chemical Name:1H-Benzimidazole, 6-bromo-2-methyl-4-(phenylmethoxy)-
- CAS:774582-60-4
- MF:C15H13BrN2O
- Structure:
- Chemical Name:ethyl 4-dimethylamino-3-hydroxy-butanoate
- CAS:90227-57-9
- MF:C8H17NO3
- Structure:
- Chemical Name:ethyl 4-dimethylamino-3-hydroxy-butanoate
- CAS:90227-57-9
- MF:C8H17NO3
- Structure:
- Chemical Name:2(1H)-Pyridinone, 3,4-dihydro-
- CAS:57147-25-8
- MF:C5H7NO
- Structure:
- Chemical Name:2-Diethylamino-N-(2,5-dimethyl-phenyl)-acetamide
- CAS:857570-37-7
- MF:C14H22N2O
- Structure:
- Chemical Name:(S)-1-Benzyl-3-N-Boc-aminopiperidine
- CAS:216854-24-9
- MF:C17H26N2O2
- Structure:
- Chemical Name:(E)-N-(2-(7-methoxy-3,4-dihydronaphthalen-1(2H)-ylidene)ethyl)acetamide
- CAS:178677-39-9
- MF:C15H19NO2
- Structure:
- Chemical Name:(E)-N-(2-(7-methoxy-3,4-dihydronaphthalen-1(2H)-ylidene)ethyl)acetamide
- CAS:178677-39-9
- MF:C15H19NO2
- Structure:
- Chemical Name:(Z)-methyl 3-(((4-(methylamino)phenyl)amino)(phenyl)methylene)-2-oxoindoline-6-carboxylate
- CAS:1987887-92-2
- MF:C24H21N3O3
- Structure:
- Chemical Name:1-(prop-1-en-2-yl)-3-(2-(4-(3-(trifluoromethyl)phenyl)piperazin-1-yl)ethyl)-1H-benzo[d]imidazol-2(3H)-one
- CAS:1971858-36-2
- MF:C23H25F3N4O
- Structure:
- Chemical Name:2-(3-(methylamino)-1-(thiophen-2-yl)propyl)naphthalen-1-ol
- CAS:1033803-59-6
- MF:C18H19NOS
- Structure:
- Chemical Name:Bendamustine Desmethyl Impurity
- CAS:41515-13-3
- MF:C15H19Cl2N3O2
- Structure:
- Chemical Name:(R)-N,N-dimethyl-3-(naphthalen-1-yloxy)-3-(thiophen-2-yl)propan-1-amine
- CAS:878757-08-5
- MF:C19H21NOS
- Structure:
- Chemical Name:Apixaban Impurity 17
- CAS:2204368-51-2
- MF:C29H31N5O5
- Chemical Name:Aprepitant Impurity 24
- CAS:
- MF:
- Chemical Name:Aripiprazole Impurity 11
- CAS:
- MF:
- Chemical Name:Aripiprazole Impurity 11
- CAS:
- MF:
- Chemical Name:Avanafil Impurity 10
- CAS:
- MF:
- Chemical Name:Capecitabine Impurity 10
- CAS:
- MF:
- Chemical Name:Carfilzomib Impurity C
- CAS:
- MF:
- Structure:
- Chemical Name:Cefathiamidine Impurity 4
- CAS:1418224-75-5
- MF:C10H11BrN2O5S
- Chemical Name:Cefodizime Impurity 2
- CAS:
- MF:
- Structure:
- Chemical Name:Choline Fenofibrate Impurity 1
- CAS:2985-79-7
- MF:C13H9ClO2
- Chemical Name:DecitaBine Impurity 11
- CAS:
- MF:
- Structure:
- Chemical Name:Isavuconazole Impurity 21
- CAS:3094994-76-7
- MF:C13H14F2N4OS
- Chemical Name:Isavuconazole Impurity 27
- CAS:
- MF:
- Chemical Name:Istradefylline Impurity E
- CAS:
- MF:
- Chemical Name:Linagliptin Impurity 41
- CAS:
- MF:
- Chemical Name:PalBociclib Impurity 17
- CAS:
- MF:
- Chemical Name:PalBociclib Impurity 24
- CAS:
- MF:
- Chemical Name:Posaconazole Impurity 12
- CAS:
- MF:
- Structure:
- Chemical Name:Posaconazole Impurity 24
- CAS:165115-78-6
- MF:C19H20F2O2
- Structure:
- Chemical Name:Sitagliptin Impurity 24
- CAS:2349567-54-8
- MF:C15H19F2NO4
- Structure:
- Chemical Name:Tamoxifen EP Impurity H
- CAS:809285-09-4
- MF:C43H48N2O2
- Chemical Name:Tenofovir impurity Q
- CAS:
- MF:
- Structure:
- Chemical Name:Trelagliptin Impurity 20
- CAS:1821520-42-6
- MF:C20H22FN5O3
- Structure:
- Chemical Name:Umeclidinium Impurity 3
- CAS:869113-45-1
- MF:C29H32BrNO3
- Structure:
- Chemical Name:Vardenafil Impurity 7
- CAS:448184-56-3
- MF:C21H26N6O7S
- Structure:
- Chemical Name:Moxifloxacin Related Compound A (HCl salt form)
- CAS:151282-23-4
- MF:C20H22ClF2N3O3
- Structure:
- Chemical Name:8-Hydroxy Entecavir
- CAS:1795791-10-4
- MF:C12H15N5O4
- Structure:
- Chemical Name:1-Pyrrolidinecarboxylic acid, 4-[4-(3-methyl-1-phenyl-1H-pyrazol-5-yl)-1-piperazinyl]-2-(3-thiazolidinylcarbonyl)-, 1,1-dimethylethyl ester, (2S,4R)-
- CAS:1404559-22-3
- MF:C27H38N6O3S
- Chemical Name:Ampicillin Impurity A
- CAS:
- MF:
- Chemical Name:Oxacillin Sodium Impurity B(EP)
- CAS:
- MF:
- Structure:
- Chemical Name:3,5-dichlorothiophene-2-carboxylic acid
- CAS:89166-94-9
- MF:C5H2Cl2O2S
- Structure:
- Chemical Name:Brexpiprazole Impurity 2
- CAS:2094559-58-5
- MF:C38H40N4O4S
- Structure:
- Chemical Name:2-methyl-6-oxo-1,6-dihydro-[3,4'-bipyridine]-5-carboxylic acid
- CAS:80047-38-7
- MF:C12H10N2O3
- Structure:
- Chemical Name:Levofloxacin Impurity 7
- CAS:1607796-83-7
- MF:C15H14FNO5