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Pharmaceutical Impurity Reference Standards
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- Chemical Name:Cyclic Macitentan quarternary salt Impurity
- CAS:
- MF:
- Chemical Name:Lacosamide Impurity – K
- CAS:
- MF:
- Chemical Name:Cefdinir CP Impurity I&J&K&L
- CAS:
- MF:
- Chemical Name:Dapoxetine Impurity 41
- CAS:
- MF:
- Chemical Name:Doxofylline Impurity 16
- CAS:
- MF:
- Structure:
- Chemical Name:Olopatadine Impurity 5
- CAS:55690-18-1
- MF:C17H16O5
- Chemical Name:Taladafil Impurity 38
- CAS:
- MF:
- Chemical Name:Salbutamol impurity 41
- CAS:
- MF:
- Chemical Name:Gadobutrol Impurity 20
- CAS:3010287-09-6
- MF:
- Structure:
- Chemical Name:Dapagliflozin Impurity 48
- CAS:2069934-29-6
- MF:C15H14Cl2O
- Chemical Name:Cilostazol Impurity I
- CAS:
- MF:
- Structure:
- Chemical Name:Pramipexole DBTA Impurity
- CAS:1821389-09-6
- MF:C7H8N2S
- Chemical Name:Amoxicillin Oxidized Impurities
- CAS:
- MF:
- Chemical Name:Amoxicillin Oxidized Impurities
- CAS:
- MF:
- Structure:
- Chemical Name:O-Desethyl Azilsartan
- CAS:1442400-68-1
- MF:C23H16N4O5
- Structure:
- Chemical Name:17- Phenyl Trinor Prostaglandin F2α Methyl Amide
- CAS:155206-01-2
- MF:C24H35NO4
- Structure:
- Chemical Name:2-[3-Carboxy-4-(2-Methylpropoxy)phenyl]-4-Methyl-5-thiazolecarboxylic Acid
- CAS:1239233-87-4
- MF:C16H17NO5S
- Structure:
- Chemical Name:4-(2-Methylpropyl)benzeneethanol
- CAS:36039-35-7
- MF:C12H18O
- 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: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:3-((3S,4R)-4-Methyl-3-(Methyl(7H-pyrrolo[2,3-d]pyriMidin-4-yl)aMino)piperidin-1-yl)-3-oxopropanenitrile
- CAS:1092578-48-7
- MF:C16H20N6O
- Structure:
- Chemical Name:4-aMino-5-chloro-2,3-dihydro-N-4-piperidinyl-7-BenzofurancarboxaMide
- CAS:137211-64-4
- MF:C14H18ClN3O2
- Structure:
- Chemical Name:(1S,3S,4R)-Entecavir
- CAS:1367369-79-6
- MF:C12H15N5O3
- Structure:
- Chemical Name:Prasugrel Impurity III
- CAS:1391194-50-5
- MF:C20H20FNO3S
- Structure:
- Chemical Name:2-(4-(6-((5-((2-chloro-6-Methylphenyl)carbaMoyl)thiazol-2-yl)aMino)-2-MethylpyriMidin-4-yl)piperazin-1-yl)ethyl acetate
- CAS:1245157-85-0
- MF:C24H28ClN7O3S
- Structure:
- Chemical Name:Ebastine IMpurity F
- CAS:1429071-63-5
- MF:C32H39NO3
- Structure:
- Chemical Name:N-((S)-1-(((R)-1-Hydroxy-3-Methylbutyl)aMino)-1-oxo-3-phenylpropan-2-yl)pyrazine-2-carboxaMide
- CAS:289472-78-2
- MF:C19H24N4O3
- Structure:
- Chemical Name:Azilsartan iMpurity O
- CAS:2171316-29-1
- MF:C23H19N3O4
- Chemical Name:cefoxitin iMpurity C
- CAS:
- MF:
- Structure:
- Chemical Name:Dasatinib DiMeric IMpurity
- CAS:910297-61-9
- MF:C36H34Cl2N12O2S2
- Structure:
- Chemical Name:Decarboxy Fexofenadine
- CAS:185066-37-9
- MF:C31H39NO2
- Structure:
- Chemical Name:Methotrexate α-Methyl Ester
- CAS:66147-29-3
- MF:C21H24N8O5
- Structure:
- Chemical Name:Bendamustine Deschloro Dimer Impurity
- CAS:1391052-61-1
- MF:C32H44N6O7
- Structure:
- Chemical Name:Benzenepropanoic acid, β-aMino-α-hydroxy-, Methyl ester, (αR,βR)-
- CAS:157722-44-6
- MF:C10H13NO3
- Structure:
- Chemical Name:Benzenebutanoicacid,b-aMino-2,4,5-trifluoro-,Methylester,(bR)-
- CAS:881995-69-3
- MF:C11H12F3NO2
- Chemical Name:Avanafil iMpurity 2
- CAS:
- MF:
- Structure:
- Chemical Name:Bisoprolol IMpurity
- CAS:2226263-67-6
- MF:C18H31NO4
- Chemical Name:Decitabine iMpurity 5
- CAS:
- MF:
- Structure:
- Chemical Name:Erlotinib iMpurity 3
- CAS:328528-74-1
- MF:C20H22BrN3O4
- Structure:
- Chemical Name:LevetiracetaM IMpurity 3
- CAS:1543353-92-9
- MF:C8H15NO4
- Structure:
- Chemical Name:(3R,4R,5R)-4-(1-Ethylpropoxy)-3-hydroxy-5-[(Methylsulfonyl)oxy]-1-cyclohexene-1-carboxylic Acid Ethyl Ester
- CAS:204254-94-4
- MF:C15H26O7S
- Structure:
- Chemical Name:9,11-Anhydrobudesonide
- CAS:313474-58-7
- MF:C25H32O5
- Structure:
- Chemical Name:2-(4-((4-Chlorophenyl)(phenyl)methyl)piperazin-1-yl)acetic acid
- CAS:113740-61-7
- MF:C19H21ClN2O2
- Structure:
- Chemical Name:EveroliMus-d4
- CAS:1338452-54-2
- MF:C53H79D4NO14
- Structure:
- Chemical Name:3-((3R,4R)-3-((2-chloro-7H-pyrrolo[2,3-d]pyriMidin-4-yl)(Methyl)aMino)-4-Methylpiperidin-1-yl)-3-oxopropanenitrile
- CAS:1616761-00-2
- MF:C16H19ClN6O
- Structure:
- Chemical Name:Aprepitant iMpurity
- CAS:96730-04-0
- MF:C13H22NO4P
- Structure:
- Chemical Name:Doxofylline iMpurity
- CAS:254760-82-2
- MF:C11H16N4O4
- Chemical Name:forMoterol iMpurity
- CAS:
- MF:
- Structure:
- Chemical Name:LevetiracetaM IMpurity 4
- CAS:1342229-32-6
- MF:C10H19NO4
- Structure:
- Chemical Name:cinacalcet iMpurity 4
- CAS:955373-56-5
- MF:C22H20F3N
- Chemical Name:Acyclovir IMpurity J
- CAS:
- MF:
- Chemical Name:AzithroMycin IMpurity K
- CAS:
- MF:
- Structure:
- Chemical Name:AztreonaM IMpurity F
- CAS:102579-57-7
- MF:C15H21N5O8S2
- Chemical Name:BendaMustine Dideschloroethyl IMpurity
- CAS:
- MF:
- Structure:
- Chemical Name:BroMocriptine IMpurity F
- CAS:82773-21-5
- MF:C32H40BrN5O5
- Structure:
- Chemical Name:Cephalexin IMpurity J
- CAS:
- MF:C16H17N3O4S
- Structure:
- Chemical Name:Cetirizine IMpurity (4-Chlorobenzophenone)
- CAS:2724877-99-8
- MF:C21H25ClN2O3
- Chemical Name:Dasatinib IMpurity 3
- CAS:
- MF:
- Chemical Name:Deferasirox IMpurity 2
- CAS:
- MF:
- Structure:
- Chemical Name:Desvenlafaxine (O-DesMethyl Venlafaxine) FuMarate
- CAS:93414-04-1
- MF:C20H29NO6
- Structure:
- Chemical Name:EzetiMibe Dehydoxy IMpurity
- CAS:204589-58-2
- MF:C24H21F2NO2
- Chemical Name:Flurbiprofen IMpurity E
- CAS:
- MF:
- Chemical Name:Levocarnitine IMpurity D
- CAS:
- MF:
- Structure:
- Chemical Name:Montelukast EP IMpurity E
- CAS:1187586-58-8
- MF:C41H46ClNO5S2
- Chemical Name:Prasugrel IMpurity 6
- CAS:
- MF:
- Structure:
- Chemical Name:RebaMipide 2-Chloro IMpurity
- CAS:90098-06-9
- MF:C19H15ClN2O4
- Chemical Name:Ribavirin IMp. F (EP)
- CAS:
- MF:
- Chemical Name:RocuroniuM BroMide IMpurity 17
- CAS:
- MF:
- Structure:
- Chemical Name:SalMeterol IMpurity D
- CAS:
- MF:C25H37NO4
- Chemical Name:SulbactaM IMpurity A
- CAS:
- MF:
- Structure:
- Chemical Name:Tigecycline Metabolite M6 (9-AniMoMinocycline)
- CAS:149934-19-0
- MF:C23H28N4O7
- Structure:
- Chemical Name:VerapaMil IMpurity G
- CAS:
- MF:C27H38N2O4
- Structure:
- Chemical Name:EthanediaMide iMpurity D
- CAS:480452-36-6
- MF:C21H30ClN5O5
- Structure:
- Chemical Name:N-(4-(2-Methyl-5,6-dihydro-4H-benzo[b]oxazolo[5,4-d]azepine-6-carbonyl)phenyl)-[1,1'-biphenyl]-2-carboxaMide
- CAS:168626-93-5
- MF:C32H25N3O3
- Structure:
- Chemical Name:1-(4-chlorophenyl)-7-oxo-6-(4-(2-oxopiperidin-1-yl)phenyl)-4,5,6,7-tetrahydro-1H-pyrazolo[3,4-c]pyridine-3-carboxaMide
- CAS:
- MF:C24H22ClN5O3
- Structure:
- Chemical Name:Methyl (4-Methylpiperidin-3-yl)carbaMate
- CAS:1204176-45-3
- MF:C8H16N2O2
- Structure:
- Chemical Name:(R)-3-(4-(5-broMo-2-chlorobenzyl)phenoxy)tetrahydrofuran
- CAS:915095-90-8
- MF:C17H16BrClO2
- Structure:
- Chemical Name:(2S,3R,4S,5S,6R)-2-(3-((5-(4-fluorophenyl)thiophen-2-yl)Methyl)-4-Methylphenyl)-tetrahydro-6-(hydroxyMethyl)-2-Methoxy-2H-pyran-3,4,5-triol
- CAS:1358581-37-9
- MF:C25H27FO6S
- Structure:
- Chemical Name:Levocarnitine iMpurity
- CAS:6490-20-6
- MF:C7H17ClN2O2
- Structure:
- Chemical Name:3-Hydroxy-4-Methyl-2(5H)-thiophenone
- CAS:34876-35-2
- MF:C5H6O2S
- Structure:
- Chemical Name:(1S,3R,7S,8S,8aR)-1,2,3,7,8,8a-Hexahydro-3,7-diMethyl-8-[2-[(2R,4R)-tetrahydro-4-hydroxy-6-oxo-2H-pyran-2-yl]ethyl]-1-naphthalenyl Ester (2Z)-2-Methyl-2-butenoic Acid
- CAS:1048973-04-1
- MF:C24H34O5
- Structure:
- Chemical Name:(6α)-17,21-Dihydroxy-6-Methylpregna-1,4,9(11)-triene-3,20-dione
- CAS:93269-35-3
- MF:C22H28O4
- Structure:
- Chemical Name:[N(Z)]-N-(3,5-DiMethyl-2(3H)-thiazolylidene)-4-hydroxy-2-Methyl-2H-1,2-benzothiazine-3-carboxaMide 1,1-Dioxide
- CAS:1262333-25-4
- MF:C15H15N3O4S2
- Structure:
- Chemical Name:Quetiapine Impurity E
- CAS:1371638-05-9
- MF:C40H44N6O2S2
- Structure:
- Chemical Name:Diltiazem impurity
- CAS:115992-91-1
- MF:C17H18N2O3S
- Structure:
- Chemical Name:Raloxifene EP IMpurity
- CAS:1700655-64-6
- MF:C13H15ClN2O2S
- Chemical Name:Parecoxib Impurity M
- CAS:
- MF:
- Structure:
- Chemical Name:Cycloocta[b]pyridine, 2-(4-ethyl-1-piperazinyl)-4-[4-(4-ethyl-1-piperazinyl)phenyl]-5,6,7,8,9,10-hexahydro-
- CAS:1648791-23-4
- MF:C29H43N5
- Chemical Name:Linagliptin Impurity O
- CAS:
- MF:
- Chemical Name:Linagliptin Impurity T
- CAS:
- MF: