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Pharmaceutical Impurity Reference Standards
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- Structure:
- Chemical Name:Fluvoxamino Acid
- CAS:192876-02-1
- MF:C14H19F3N2O2
- Structure:
- Chemical Name:3,5-androstadien-17-one
- CAS:1912-63-6
- MF:C19H26O
- Structure:
- Chemical Name:3-phenylpyrazin-2-ol
- CAS:73200-73-4
- MF:C10H8N2O
- Structure:
- Chemical Name:1-(Isopropylamino)-3-(4-methylphenoxy)propane-2-ol
- CAS:5790-46-5
- MF:C13H21NO2
- Structure:
- Chemical Name:5H-Dibenz[b,f]azepine-10,11-dione
- CAS:19579-83-0
- MF:C14H9NO2
- Structure:
- Chemical Name:Ethanesulfonic acid ethyl ester
- CAS:1912-30-7
- MF:C4H10O3S
- Structure:
- Chemical Name:DONEPEZIL HYDROCHLORIDE
- CAS:110119-84-1
- MF:C24H30ClNO3
- Structure:
- Chemical Name:(6R,7R)-7-((Z)-2-(2-aMinothiazol-4-yl)-2-(hydroxyiMino)acetaMido)-8-oxo-3-vinyl-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylic acid 5-oxide
- CAS:934986-48-8
- MF:C14H13N5O6S2
- Structure:
- Chemical Name:(2S)-1-[(2S)-2-Methyl-3-Methylsulfinylpropanoyl]pyrrolidine-2-carboxylic acid
- CAS:78636-31-4
- MF:C14H22N2O6S2
- Chemical Name:penilloic acids of piperacillin
- CAS:
- MF:
- Structure:
- Chemical Name:2-PyrazinecarboxaMide, 6-nitro-3,4-dihydro-3-oxo-
- CAS:259793-97-0
- MF:C5H4N4O4
- Structure:
- Chemical Name:N-[(1R,3r,5S)-9-azabicyclo[3.3.1]non-3-yl]-1-Methyl-1H-indazole-3-carboxaMide hydrochloride
- CAS:141136-01-8
- MF:C17H23ClN4O
- Structure:
- Chemical Name:BIRG 616 BS
- CAS:287980-84-1
- MF:C12H10N4O
- Structure:
- Chemical Name:ClotriMazole IMpurity A
- CAS:23593-71-7
- MF:C22H17ClN2
- Structure:
- Chemical Name:9-Nitrominocycline
- CAS:149934-16-7
- MF:C23H26N4O9
- Structure:
- Chemical Name:N-(3,5-DiMethyladaMantan-1-yl)forMaMide
- CAS:351329-88-9
- MF:C13H21NO
- Structure:
- Chemical Name:N-(Methylsulfonyl)-4'-nitro-2'-phenoxyMethanesulfonanilide
- CAS:51765-72-1
- MF:C14H14N2O7S2
- Structure:
- Chemical Name:Vitamin B12 e-Monocarboxylic Acid
- CAS:26264-28-8
- MF:C63H87CoN13O15P
- Structure:
- Chemical Name:caffeidine
- CAS:20041-90-1
- MF:C7H12N4O
- Structure:
- Chemical Name:digoxigenin-mono(digitoxoside)
- CAS:5352-63-6
- MF:C29H44O8
- Structure:
- Chemical Name:W 36017
- CAS:21236-54-4
- MF:C12H18N2O
- Structure:
- Chemical Name:ONO EI-601
- CAS:155023-59-9
- MF:C15H14N2O6S
- Structure:
- Chemical Name:norchlorpromazine
- CAS:1225-64-5
- MF:C16H17ClN2S
- Structure:
- Chemical Name:ETHYLISOPROPYLNITROSAMINE
- CAS:16339-04-1
- MF:C5H12N2O
- Structure:
- Chemical Name:1,3,5,7-Tetrmethyl-adamantane
- CAS:1687-36-1
- MF:C14H24
- Structure:
- Chemical Name:4-[1-(hydroxyamino)ethylidene]cyclohexa-2,5-dien-1-one
- CAS:34523-34-7
- MF:C8H9NO2
- Structure:
- Chemical Name:3-AMino-4-(2-chlorophenyl)-6-nitro-2(1H)-quinolinone
- CAS:55198-89-5
- MF:C15H10ClN3O3
- Structure:
- Chemical Name:3-Dehydroxy-3-oxo-4,5-dihydro OxazepaM
- CAS:19554-95-1
- MF:C15H11ClN2O2
- Structure:
- Chemical Name:8-DeMethyl Ivabradine
- CAS:304464-97-9
- MF:C26H34N2O5
- Structure:
- Chemical Name:CitalopraM DiMethylaMinobutanone
- CAS:1329745-98-3
- MF:C25H33FN2O2
- Structure:
- Chemical Name:DesMethyl Erlotinib Carboxylate Acid
- CAS:882172-60-3
- MF:C21H19N3O5
- Structure:
- Chemical Name:[[4-[(3-Methylphenyl)aMino]-3-pyridinyl]sulfonyl]carbaMic Acid Ethyl Ester
- CAS:72810-57-2
- MF:C15H17N3O4S
- Structure:
- Chemical Name:12-Hydroxy Irinotecan
- CAS:185336-12-3
- MF:C33H38N4O7
- Structure:
- Chemical Name:Losartan IsoMer IMpurity, PotassiuM Salt
- CAS:860644-28-6
- MF:C22H22ClKN6O
- Structure:
- Chemical Name:PidotiMod Diketopiperazine-6-propanoic Acid
- CAS:161771-75-1
- MF:C9H12N2O4S
- Structure:
- Chemical Name:RofluMilast N-Oxide
- CAS:292135-78-5
- MF:C17H14Cl2F2N2O4
- Chemical Name:AzithroMycin IMpurity J
- CAS:
- MF:
- Structure:
- Chemical Name:EsMolol Acid SodiuM Salt
- CAS:83356-60-9
- MF:C15H22NNaO4
- Structure:
- Chemical Name:Thyroxine Ethyl Ester
- CAS:76353-71-4
- MF:C17H15I4NO4
- Structure:
- Chemical Name:(4-Chlorophenyl)[4-(1-Methylethoxy)phenyl]Methanone (Fenofibrate IMpurity)
- CAS:154356-96-4
- MF:C16H15ClO2
- Structure:
- Chemical Name:5-Acetyl Rhein
- CAS:875535-35-6
- MF:C17H10O7
- Structure:
- Chemical Name:7'-Methyl-2'-propyl-1H,3'H-2,5'-bibenzo[d]iMidazole
- CAS:884330-09-0
- MF:C18H18N4
- Structure:
- Chemical Name:5-Des[2-(tert-butylaMino)] BaMbuterol-5-ethanol
- CAS:112935-93-0
- MF:C14H20N2O5
- Structure:
- Chemical Name:Deoxy Fesoterodine
- CAS:895137-81-2
- MF:C26H37NO2
- Structure:
- Chemical Name:Bisacodyl Related Compound C (20 mg) (4-[(4-Hydroxyphenyl)(pyridin-2-yl)methyl]phenyl acetate)
- CAS:72901-16-7
- MF:C20H17NO3
- Structure:
- Chemical Name:Olanzapine ThioacetoxyMethylidene IMpurity Discontinued
- CAS:1320360-87-9
- MF:C17H20N4O2S
- Structure:
- Chemical Name:1-NaphthaleneethanaMine, 7-Methoxy-N-[2-(7-Methoxy-1-naphthalenyl)ethyl]-
- CAS:1385018-57-4
- MF:C26H27NO2
- Structure:
- Chemical Name:1-NaphthaleneethanaMine, 7-Methoxy-N-[2-(7-Methoxy-1-naphthalenyl)ethyl]-
- CAS:1385018-57-4
- MF:C26H27NO2
- Structure:
- Chemical Name:24R-Calcipotriol
- CAS:112827-99-3
- MF:C27H40O3
- Chemical Name:Methotrexate IMpurity C
- CAS:
- MF:
- Structure:
- Chemical Name:Paroxetine EP IMpurity G
- CAS:69675-10-1
- MF:C12H14FN
- Chemical Name:Itraconazole impurity C
- CAS:
- MF:
- Structure:
- Chemical Name:1-cyclopropyl-8-ethoxy-6,7-difluoro-4-oxo-1,4-dihydroquinoline-3-carboxylic acid
- CAS:143158-55-8
- MF:C15H13F2NO4
- Structure:
- Chemical Name:METOPROLOL IMPURITY A
- CAS:
- MF:C15H25NO3
- Chemical Name:NICERGOLINE IMPURITY A
- CAS:
- MF:
- Structure:
- Chemical Name:AZITHROMYCIN IMPURITY B
- CAS:307974-61-4
- MF:C38H72N2O11
- Chemical Name:Tafluprost Impurity 15
- CAS:
- MF:
- Chemical Name:Rosuvastatin Impurity 159 （Sodium salt)
- CAS:
- MF:
- Chemical Name:Rosuvastatin Impurity 140
- CAS:
- MF:
- Chemical Name:Rosuvastatin Impurity 130
- CAS:
- MF:
- Chemical Name:Terlipressin Impurity 1 (des-Gly1)
- CAS:
- MF:
- Chemical Name:Brivaracetam Impurity 66
- CAS:
- MF:
- Structure:
- Chemical Name:2-Acetoxymethyl1-3-Methyl-4-
- CAS:112525-75-4
- MF:C11H12F3NO3
- Chemical Name:N-(7-chloro-4-((3-chloro-4-fluorophenyl)amino)quinazolin-6-yl)-4-(dimethylamino)butanamide
- CAS:
- MF:
- Chemical Name:Ertapenem Impurity D(USP)
- CAS:
- MF:
- Structure:
- Chemical Name:3-(N-Benzyl-N-methylamino)propiophenone hydrochloride
- CAS:5409-62-1
- MF:C17H20ClNO
- Structure:
- Chemical Name:2(1H)-Isoquinolinecarboxylic acid, 3,4-dihydro-4-hydroxy-1-phenyl-, (3R)-1-azabicyclo[2.2.2]oct-3-yl ester, (1S,4S)-
- CAS:869884-24-2
- MF:C23H26N2O3
- Chemical Name:Azilsartan Medoxomil Potassium impurity209
- CAS:
- MF:
- Chemical Name:Nelarabine impurity 01
- CAS:
- MF:
- Structure:
- Chemical Name:Pyridine, 2-(diethylboryl)- (9CI)
- CAS:385804-67-1
- MF:C9H14BN
- Structure:
- Chemical Name:Cyclopropanamine, 2-(3-fluorophenyl)-, (1R,2S)- (9CI)
- CAS:220353-83-3
- MF:C9H10FN
- Structure:
- Chemical Name:1(2H)-Naphthalenone, 4-hydroxy-3-methyl-2-[(2E,6E,10E)-3,7,11,15-tetramethyl-2,6,10,14-hexadecatetraen-1-ylidene]-
- CAS:693781-59-8
- MF:C31H40O2
- Chemical Name:Bisoprolol Impurity 50
- CAS:
- MF:
- Chemical Name:Milnacipran Impurity 26
- CAS:
- MF:
- Chemical Name:Olodaterol Impurity 15
- CAS:
- MF:
- Chemical Name:Dobutamine Impurity 15
- CAS:
- MF:
- Structure:
- Chemical Name:2,3'-Bipyridine, 5-chloro-6'-methyl-3-[4-(methylthio)phenyl]-, hydrochloride (1:1)
- CAS:1447814-82-5
- MF:C18H16Cl2N2S
- Chemical Name:Pitavastatin Impurity 104
- CAS:
- MF:
- Chemical Name:Tegoprazan Impurity 8
- CAS:
- MF:
- Structure:
- Chemical Name:INDEX NAME NOT YET ASSIGNED
- CAS:2706536-33-4
- MF:C27H34N2O2
- Chemical Name:Nirmatrelvir Impurity 10
- CAS:
- MF:
- Chemical Name:NA
- CAS:
- MF:
- Structure:
- Chemical Name:7-(ALPHA-BROMOACETAMIDO)CEPHALOSPORANIC ACID
- CAS:26973-80-8
- MF:C12H13BrN2O6S
- Chemical Name:Bumetanide Impurity 20
- CAS:
- MF:
- Chemical Name:Rocuronium Bromide Impurity 28 、29
- CAS:
- MF:
- Chemical Name:Roxadustat Impurity 22
- CAS:
- MF:
- Chemical Name: Olaparib Impurity 41
- CAS:
- MF:
- Chemical Name:Capecitabine Related Compound B
- CAS:
- MF:
- Structure:
- Chemical Name:D-erythro-3,4-Dihydroxyphenylserine
- CAS:51829-98-2
- MF:C9H11NO5
- Structure:
- Chemical Name:aztreonam
- CAS:80951-91-3
- MF:C13H17N5O8S2
- Structure:
- Chemical Name:5H-[1]Benzopyrano[2,3-b]pyridine,7-ethyl-(9CI)
- CAS:639857-68-4
- MF:C14H13NO
- Structure:
- Chemical Name:[1,1-Biphenyl]-2,2,4,4,5,5-hexol(9CI)
- CAS:76625-61-1
- MF:C12H10O6
- Structure:
- Chemical Name:lamivudine sulfoxide
- CAS:160552-55-6
- MF:C8H11N3O4S
- Chemical Name:metreleptin
- CAS:186018-45-1
- MF:
- Structure:
- Chemical Name:3,5-DIIODO-4'-(4-HYDROXYPHENOXY)BENZOIC ACID
- CAS:2055-97-2
- MF:C13H6I4O4
- Structure:
- Chemical Name:Sotalol EP Impurity A
- CAS:16974-42-8
- MF:C12H20N2O2S
- Structure:
- Chemical Name:Methyl 4-(4'-fluorophenyl)-2-(cyclopropyl)-3-quinolinecarboxylate
- CAS:121659-86-7
- MF:C20H16FNO2
- Structure:
- Chemical Name:Silodosin
- CAS:160970-64-9
- MF:C25H32F3N3O4
- Structure:
- Chemical Name:(3S)-6,6-DIBROMO-2,2-DIMETHYLPENAM-3-CARBOXYLIC ACID 1,1-DIOXIDE
- CAS:76646-91-8
- MF:C8H9Br2NO5S