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Pharmaceutical Impurity Reference Standards
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- Structure:
- Chemical Name:METHYL 2-[(2,5-DICHLOROBENZOYL)AMINO]ACETATE
- CAS:338965-44-9
- MF:C10H9Cl2NO3
- Structure:
- Chemical Name:Betaxolol EP Impurity A
- CAS:67193-95-7
- MF:C14H23NO2
- Structure:
- Chemical Name:3,5-Bis(benzyloxy)benzoic acid benzyl ester
- CAS:50513-72-9
- MF:C28H24O4
- Structure:
- Chemical Name:[(2,3-Dihydro-1,5-dimethyl-3-oxo-2-phenyl-1H-pyrazol-4-yl)amino]methanesulfonic acid
- CAS:117-38-4
- MF:C12H15N3O4S
- Structure:
- Chemical Name:2-Amino-5-bromobenzaldehyde
- CAS:29124-57-0
- MF:C7H6BrNO
- Structure:
- Chemical Name:(R)-(+)-3-(N-METHYLAMINO)-1-(2-THIENYL)-1-PROPANOL
- CAS:116539-57-2
- MF:C8H13NOS
- Structure:
- Chemical Name:PLANTAGININ
- CAS:26046-94-6
- MF:C21H20O11
- Structure:
- Chemical Name:2-(2-Chloroethyl)thiophene
- CAS:19995-38-1
- MF:C6H7ClS
- Structure:
- Chemical Name:2'',3'',5''-Triacetyl -azacytidine
- CAS:10302-78-0
- MF:C14H18N4O8
- Structure:
- Chemical Name:N-Methyl Pantoprazole, mixture of 1 and 3 isomers
- CAS:624742-53-6
- MF:C17H17F2N3O4S
- Structure:
- Chemical Name:N-DESMETHYLGALANTHAMINE
- CAS:41303-74-6
- MF:C16H19NO3
- Structure:
- Chemical Name:2-[6-(2-hydroxy-2-phenyl-ethyl)-1-methyl-2-piperidyl]-1-phenyl-ethanol
- CAS:552-72-7
- MF:C22H29NO2
- Structure:
- Chemical Name:4-Amino-1-3,5-di-O-benzoyl-2-deoxy-2,2-difluoro-a-D-erythro-pentofuranosyl)-2(1H)-pyrimidinone
- CAS:134790-40-2
- MF:C23H19F2N3O6
- Structure:
- Chemical Name:Granisetron Impurity C
- CAS:160177-67-3
- MF:C17H22N4O
- Structure:
- Chemical Name:5-ForMyl-8-hydroxycarbostyril
- CAS:68304-21-2
- MF:C10H7NO3
- Chemical Name:Capecitabine Related Compound A
- CAS:
- MF:
- Structure:
- Chemical Name:1-Pyrrolidineaceticacid,2-(aminocarbonyl)-,(2S)-(9CI)
- CAS:277751-02-7
- MF:C7H12N2O3
- Structure:
- Chemical Name:2-Pyrrolidinecarbonitrile,1-acetyl-,(2S)-(9CI)
- CAS:700376-84-7
- MF:C7H10N2O
- Chemical Name:Tafluprost Impurity 17
- CAS:
- MF:
- Chemical Name:Rosuvastatin Impurity 160 （Sodium salt)
- CAS:
- MF:
- Chemical Name:Rosuvastatin Impurity 143
- CAS:
- MF:
- Chemical Name:Rosuvastatin Impurity 131
- CAS:
- MF:
- Chemical Name:Rosuvastatin Impurity 125
- CAS:
- MF:
- Chemical Name:Metabotropic glutamate receptor 5 (GRM5) Antibody
- CAS:
- MF:
- Chemical Name:Terlipressin Impurity 2 (des-Gly1,Gly2)
- CAS:
- MF:
- Structure:
- Chemical Name:BENZHYDRYL 6,6-DIHYDROPENICILLIC ACID 1-OXIDE[TAZOBACTAM INTERMEDIATE]
- CAS:87579-78-0
- MF:C21H21NO4S
- Chemical Name:Ertapenem Impurity C(USP)
- CAS:
- MF:
- Chemical Name:Ertapenem Impurity 22
- CAS:
- MF:
- Chemical Name:(1-carboxy-1-(3-methyl-5-oxo-1-phenyl-4,5-dihydro-1H-pyrazol-4-yl)ethyl)-L-cysteine
- CAS:
- MF:
- Structure:
- Chemical Name:Pyrazinecarboxylic acid, 5-methyl-, 1-oxide (9CI)
- CAS:98502-96-6
- MF:C6H6N2O3
- Structure:
- Chemical Name:1,4-Butanediaminium, N1,N4-diethyl-N1,N1,N4,N4-tetrakis(1-methylethyl)-, bromide (1:2)
- CAS:1621467-18-2
- MF:C20H46BrN2+
- Structure:
- Chemical Name:1,6,10,14-Hexadecatetraen-3-ol, 3,7,11,15-tetramethyl-, (6Z,10E)-
- CAS:3790-76-9
- MF:C20H34O
- Chemical Name:Bisoprolol Impurity 51
- CAS:
- MF:
- Structure:
- Chemical Name:2-Deoxy-2,2-difluoro-D-ribofuranose-3,5-dibenzoate-1-methanesulfonate
- CAS:134877-42-2
- MF:C20H18F2O8S
- Chemical Name:Pitavastatin Impurity 105
- CAS:
- MF:
- Chemical Name:Nirmatrelvir Impurity 11
- CAS:
- MF:
- Structure:
- Chemical Name:Lisinopril R,S,S-Diketopiperazine
- CAS:219677-82-4
- MF:C21H29N3O4
- Structure:
- Chemical Name:4-Chloromethyl-N-[4-methyl-3-[[4-(pyridin-3-yl)pyrimidin-2-yl]amino]phenyl]benzamide
- CAS:404844-11-7
- MF:C24H20ClN5O
- Structure:
- Chemical Name:6-Mercaptopurine disulfide
- CAS:49808-20-0
- MF:C10H6N8S2
- Structure:
- Chemical Name:Dexivacaine
- CAS:24358-84-7
- MF:C15H22N2O
- Structure:
- Chemical Name:1-Azetidinesulfonamide(9CI)
- CAS:654073-32-2
- MF:C3H8N2O2S
- Structure:
- Chemical Name:1-Piperazinecarboxylicacid,4-methyl-,ethylester(6CI,9CI)
- CAS:59325-11-0
- MF:C8H16N2O2
- Structure:
- Chemical Name:(1S,4R)-4-Amino-2-cyclopenten-1-carboxylic Acid Hydrochloride
- CAS:134234-04-1
- MF:C6H9NO2
- Structure:
- Chemical Name:erythronolide B
- CAS:3225-82-9
- MF:C21H38O7
- Structure:
- Chemical Name:desmethylmianserin
- CAS:71936-92-0
- MF:C17H18N2
- Structure:
- Chemical Name:3-demethylthiocolchicine
- CAS:87424-25-7
- MF:C21H23NO5S
- Structure:
- Chemical Name:2,6-di-tert-butyl-4-methylene-2,5-cyclohexadienone
- CAS:2607-52-5
- MF:C15H22O
- Structure:
- Chemical Name:2-acetyl-2-decarboxamidooxytetracycline
- CAS:6542-44-5
- MF:C23H25NO8
- Structure:
- Chemical Name:7,8-dehydro-9,10-desacetyldoxorubicinone
- CAS:64845-67-6
- MF:C19H12O6
- Structure:
- Chemical Name:(S)-4-(4-Nitrobenzyl)-2-oxazolidinone
- CAS:139264-55-4
- MF:C10H10N2O4
- Structure:
- Chemical Name:6-(Benzyloxy)-9-((1S,3S)-4-(benzyloxy)-3-((benzyloxy)methyl)-2-methylenecyclopentyl)-N-((4-methoxyphenyl)diphenylmethyl)-9H-purin-2-amine
- CAS:142217-80-9
- MF:C53H49N5O4
- Structure:
- Chemical Name:2-(4-Hydroxymethylphenyl)phenylsulfonamide
- CAS:158144-55-9
- MF:C15H14O3
- Structure:
- Chemical Name:4-[2-(CYCLOPROPYLMETHOXY)ETHYL]PHENOL
- CAS:63659-16-5
- MF:C12H16O2
- Chemical Name:Bumetanide Impurity 21
- CAS:
- MF:
- Chemical Name:Amoxicillin related impurities K
- CAS:
- MF:
- Chemical Name:Amoxicillin related impurities K
- CAS:
- MF:
- Structure:
- Chemical Name:4'-(Hydroxymethyl)-[1,1'-Biphenyl]-2-Carboxylic Acid
- CAS:158144-54-8
- MF:C14H12O3
- Chemical Name:Brivaracetam Impurity 118
- CAS:
- MF:
- Chemical Name:1-(4-((2-(4-hydroxypiperidin-1-yl)ethyl)(methyl)carbamoyl)benzyl)piperidine-4-carboxylic acid
- CAS:2975124-11-7
- MF:
- Chemical Name:Empagliflozin Impurity 108
- CAS:
- MF:
- Chemical Name:Perospirone Impurity 28
- CAS:
- MF:
- Chemical Name:Perospirone Impurity 23
- CAS:
- MF:
- Chemical Name:Perospirone Impurity 16
- CAS:
- MF:
- Chemical Name:Dolutegravir Impurity 24
- CAS:
- MF:
- Chemical Name:Paxlovid Impurity 18
- CAS:
- MF:
- Chemical Name:NA
- CAS:
- MF:
- Chemical Name:Fondaparinux sodium impurity 15
- CAS:
- MF:
- Chemical Name:Fondaparinux Sodium Impurity 10
- CAS:
- MF:
- Chemical Name:Oxacillin sodium Impurity E
- CAS:
- MF:
- Chemical Name:ltrombopag Impurity 26
- CAS:
- MF:
- Chemical Name:Revefenacin Impurity 19
- CAS:
- MF:
- Chemical Name:Caspofungin Impurity 11
- CAS:
- MF:
- Chemical Name:Miglitol Isomer ImpurityA
- CAS:
- MF:
- Chemical Name:Olodaterol Impurity 33
- CAS:
- MF:
- Structure:
- Chemical Name:(1R,4S)-N-Desmethyl Sertraline Hydrochloride
- CAS:675126-08-6
- MF:C16H15Cl2N.ClH
- Structure:
- Chemical Name:3-(4-Formylaminobutyryl)pyridine
- CAS:887355-56-8
- MF:C10H12N2O2
- Structure:
- Chemical Name:Didesmethyl Erlotinib Hydrochloride Salt
- CAS:183320-12-9
- MF:C20H20ClN3O4
- Structure:
- Chemical Name:DESVENLAFAXINE SUCCINATE
- CAS:448904-47-0
- MF:C20H31NO6
- Structure:
- Chemical Name:Desloratadine IMpurity B
- CAS:117796-50-6
- MF:C19H19BrN2
- Chemical Name:Itraconazole IMpurity B
- CAS:
- MF:
- Structure:
- Chemical Name:Benzene, 1-(3-chloropropyl)-3-(trifluoroMethyl)-
- CAS:82258-76-2
- MF:C10H10ClF3
- Structure:
- Chemical Name:N-Methyl-N-((3S,4S)-4-Methylpiperidin-3-yl)-7H-pyrrolo[2,3-d]pyriMidin-4-aMine
- CAS:1260614-73-0
- MF:C13H19N5
- Structure:
- Chemical Name:2-(5-oxo-5H-chroMeno[2,3-b]pyridin-7-yl)propanoic acid
- CAS:52549-19-6
- MF:C15H11NO4
- Structure:
- Chemical Name:1H-BenziMidazole, 2-[[[3-Methyl-4-(2,2,2-trifluoroethoxy)-2-pyridinyl]Methyl]sulfinyl]-1-(2,2,2-trifluoroethyl)-
- CAS:1187926-84-6
- MF:C18H15F6N3O2S
- Structure:
- Chemical Name:4,5-dihydro-a-(hydroxyMethyl)-a,3-diMethyl-5-oxo-1-phenyl-1H-Pyrazole-4-Methanesulfonic acid
- CAS:1242471-40-4
- MF:C13H16N2O5S
- Structure:
- Chemical Name:16α,17-[(1RS)-Butylidenebis(oxy)]-11β-hydroxy-17-(hydroxyMethyl)-D-hoMoandrosta-1,4-diene-3,17a-dione (Mixture of DiastereoMers)
- CAS:1040085-99-1
- MF:C25H34O6
- Structure:
- Chemical Name:2-BroMo-1-cyclopropyl-2-(3-fluorophenyl)ethanone
- CAS:1359829-72-3
- MF:C11H10BrFO
- Structure:
- Chemical Name:N-((4-(5-Methyl-3-phenylisoxazol-4-yl)phenyl)sulfonyl)acetaMide
- CAS:198471-06-6
- MF:C18H16N2O4S
- Structure:
- Chemical Name:N-((S)-1-(((S)-1-Hydroxy-3-Methylbutyl)aMino)-1-oxo-3-phenylpropan-2-yl)pyrazine-2-carboxaMide
- CAS:289472-81-7
- MF:C19H24N4O3
- Structure:
- Chemical Name:(Z)-N-(2-nitrovinyl)acetaMide
- CAS:1238305-24-2
- MF:C4H6N2O3
- Structure:
- Chemical Name:Azilsartan iMpurity
- CAS:1604812-35-2
- MF:C35H28N4O11
- Structure:
- Chemical Name:Azilsartan iMpurity N
- CAS:2244031-86-3
- MF:C22H17N3O4
- Chemical Name:cefoxitin iMpurity B
- CAS:
- MF:
- Chemical Name:pidotiMod iMpurity A
- CAS:
- MF:
- Structure:
- Chemical Name:Rivaroxaban iMpurity A
- CAS:931204-39-6
- MF:C19H20ClN3O6S
- Structure:
- Chemical Name:R-7H-Pyrido[1,2,3-de]-1,4-benzoxazine-6-carboxylic acid, 9-fluoro-2,3-dihydro-3-Methyl-10-(4-Methyl-1-piperazinyl)-7-oxo- Methyl ester
- CAS:1268719-66-9
- MF:C19H22FN3O4
- Structure:
- Chemical Name:Ticagrelor Sulfone
- CAS:274693-39-9
- MF:C23H28F2N6O6S
- Structure:
- Chemical Name:2-(((3aR,4S,6R,6aS)-6-(7-aMino-5-(propylthio)-3H-[1,2,3]triazolo[4,5-d]pyriMidin-3-yl)-2,2-diMethyltetrahydro-3aH-cyclopenta[d][1,3]dioxol-4-yl)oxy)ethanol
- CAS:1858267-99-8
- MF:C17H26N6O4S