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Pharmaceutical Impurity Reference Standards
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- Structure:
- Chemical Name:Gimeracil Impurity
- CAS:17902-24-8
- MF:C8H9ClN2O3
- Chemical Name:Pramipexole Impurity H
- CAS:
- MF:
- Structure:
- Chemical Name:Quercetin 3-rutinoside 7-glucoside
- CAS:30311-61-6
- MF:C33H40O21
- Structure:
- Chemical Name:Rivaroxaban Impurity H
- CAS:1807455-76-0
- MF:C25H24Cl2N4O6S2
- Chemical Name:Vonoprazan impurity A
- CAS:
- MF:
- Structure:
- Chemical Name:Palonosetron Impurity 7
- CAS:177932-92-2
- MF:C18H24N2O
- Structure:
- Chemical Name:4-(2,3-Dichlorophenyl)-2,6-diMethyl-1,4-dihydropyridine-3,5-dicarboxylic acid
- CAS:138279-32-0
- MF:C15H13Cl2NO4
- Structure:
- Chemical Name:3-Cyano-4-isobutoxybenzoic acid
- CAS:528607-60-5
- MF:C12H13NO3
- Structure:
- Chemical Name:REF DUPL: trans-2-Hydroxymethyl-5-(cytosin-1-yl)-1,3-oxathiolane
- CAS:139757-68-9
- MF:C8H11N3O3S
- Structure:
- Chemical Name:(1R,2R,4S)-2-[(tert-butoxycarbonyl)aMino]-4-[(diMethylaMino)carbonyl]cyclohexyl Methanesulfonate
- CAS:929693-31-2
- MF:C15H28N2O6S
- Chemical Name:Tegafur Impurity BCB
- CAS:
- MF:
- Structure:
- Chemical Name:((2R,3R,4R)-3-(benzoyloxy)-4-chloro-4-Methyl-5-oxotetrahydrofuran-2-yl)Methyl benzoate
- CAS:1496551-65-5
- MF:C20H17ClO6
- Structure:
- Chemical Name:2-(4-fluorophenyl)-5-(2-Methylbenzyl)thiophene
- CAS:2005454-69-1
- MF:C18H15FS
- Structure:
- Chemical Name:AcetaMide, N-[[(5S)-2-oxo-3-[4-(3-oxo-4-Morpholinyl)phenyl]-5-oxazolidinyl]Methyl]-
- CAS:1429334-00-8
- MF:C16H19N3O5
- Structure:
- Chemical Name:PSI 7411
- CAS:1015073-43-4
- MF:C10H14FN2O8P
- Structure:
- Chemical Name:5-[[4-(Hydroxymethyl)phenoxy]methyl]-3-(1-methylethyl)-2-oxazolidinone
- CAS:1071765-44-0
- MF:C14H19NO4
- Structure:
- Chemical Name:(1S)-1,5-Anhydro-1-C-[3-[[5-(4-fluorophenyl)-2-thienyl]methyl]-4-methylphenyl]-D-glucitol 2,3,4,6-tetrakis(2,2-dimethylpropanoate)
- CAS:1283129-18-9
- MF:C44H57FO9S
- Structure:
- Chemical Name:ForMaMide, N-[5-(2R)-oxiranyl-2-(phenylMethoxy)phenyl]-
- CAS:201677-57-8
- MF:C16H15NO3
- Structure:
- Chemical Name:2-(MethylcarbaMoyl)benzoic acid
- CAS:6843-36-3
- MF:C9H9NO3
- Structure:
- Chemical Name:1-(4-(2-Methoxyethyl)phenoxy)-3-(oxiran-2-ylMethoxy)propan-2-ol
- CAS:1416440-64-6
- MF:C15H22O5
- Structure:
- Chemical Name:(3S,4S)-1-benzyl-N,4-diMethylpiperidin-3-aMine
- CAS:1354621-59-2
- MF:C14H22N2
- Structure:
- Chemical Name:1H-BenziMidazole-7-carboxylic acid, 1-[[2'-(2,5-dihydro-5-oxo-1,2,4-oxadiazol-3-yl)[1,1'-biphenyl]-4-yl]Methyl] -2-ethoxy-, ethyl ester
- CAS:1403474-70-3
- MF:C27H24N4O5
- Structure:
- Chemical Name:6-acetyl-2-aMino-8-cyclopentyl-5-Methylpyrido[2,3-d]pyriMidin-7(8H)-one
- CAS:571189-64-5
- MF:C15H18N4O2
- Structure:
- Chemical Name:Apixaban-13C-D3
- CAS:1261393-15-0
- MF:C2413CH22D3N5O4
- Chemical Name:IMp. C (EP): Ethyl [(4-Methylphenyl)sulphonyl]-CarbaMate
- CAS:
- MF:
- Chemical Name:IMp. C (EP): Methyl-2-[4-[2-[(4-Chlorobenzoyl)aMino]ethyl]phenoxy]-2-Methylpropanoate
- CAS:
- MF:
- Structure:
- Chemical Name:5-PyriMidinecarboxylic acid, 4-(4-fluorophenyl)-1,2-dihydro-6-(1-Methylethyl)-2-oxo-, Methyl ester
- CAS:488798-37-4
- MF:C15H15FN2O3
- Structure:
- Chemical Name:AgoMelatine DiMer Urea
- CAS:185421-27-6
- MF:C27H28N2O3
- Structure:
- Chemical Name:AgoMelatine DiMer Urea
- CAS:185421-27-6
- MF:C27H28N2O3
- Structure:
- Chemical Name:Isotachysterol3
- CAS:22350-43-2
- MF:C27H44O
- Structure:
- Chemical Name:Nitrendipine Propyl Ester
- CAS:225785-54-6
- MF:C19H22N2O6
- Structure:
- Chemical Name:O-DesMethyl Urapidil
- CAS:91453-03-1
- MF:C19H27N5O3
- Structure:
- Chemical Name:(1R,3R,4R)-Entecavir
- CAS:1367369-76-3
- MF:C12H15N5O3
- Structure:
- Chemical Name:5-(5-chloro-1-(2-fluorophenyl)-2-oxopentyl)-4,5,6,7-tetrahydrothieno[3,2-c]pyridin-2-yl acetate
- CAS:1056459-37-0
- MF:C20H21ClFNO3S
- Structure:
- Chemical Name:(2S,3R)-2-((S)-1-(3,5-bis(trifluoroMethyl)phenyl)ethoxy)-3-(4-fluorophenyl)Morpholine
- CAS:327623-37-0
- MF:C20H18F7NO2
- Structure:
- Chemical Name:[1,4'-Bipiperidine]-1'-carboxylic acid
- CAS:1026078-50-1
- MF:C11H20N2O2
- Structure:
- Chemical Name:4-[[3-(1-Methylethyl)-2-oxo-5-oxazolidinyl]methoxy]benzaldehyde
- CAS:1173203-26-3
- MF:C14H17NO4
- Chemical Name:EMpagliflozin iMpurity 9
- CAS:
- MF:
- Structure:
- Chemical Name:EMpagliflozin iMpurity 14
- CAS:2137418-13-2
- MF:C23H27ClO8
- Structure:
- Chemical Name:Avatrapa impurity 12
- CAS:570403-04-2
- MF:C23H24Cl3N5OS2
- Chemical Name:ibrutinib iMpurity A
- CAS:
- MF:
- Chemical Name:Sunitinib iMpurity E
- CAS:
- MF:
- Structure:
- Chemical Name:Rosuvastatin EP impurity H
- CAS:1335110-44-5
- MF:C22H28FN3O6S
- 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:Linagliptin iMpurity
- CAS:2140263-92-7
- MF:C25H28N8O2
- Structure:
- Chemical Name:1-(2-Fluorobenzyl)-1H-pyrazolo[3,4-b]pyridine-3-carboxaMide
- CAS:256376-62-2
- MF:C14H11FN4O
- Structure:
- Chemical Name:Alogliptin iMpurity
- CAS:60271-06-9
- MF:C7H10N2O3
- Structure:
- Chemical Name:Alogliptin iMpurity
- CAS:60271-06-9
- MF:C7H10N2O3
- Structure:
- Chemical Name:cefaclor iMpurity H
- CAS:
- MF:C4H6N4O3S2
- Chemical Name:Tadalafil iMpurity E
- CAS:
- MF:
- Structure:
- Chemical Name:3,3',5-TRIIODOTHYROPROPIONIC ACID
- CAS:51-26-3
- MF:C15H11I3O4
- Structure:
- Chemical Name:Cytidine,N-benzoyl-2^-C-Methyl-,3^,5^-dibenzoate(9CI)
- CAS:863329-64-0
- MF:C31H27N3O8
- Structure:
- Chemical Name:(R)-2-((6-(3-((3-(2-cyanobenzyl)-1-Methyl-2,6-dioxo-1,2,3,6-tetrahydropyriMidin-4-yl)aMino)piperidin-1-yl)-3-Methyl-2,4-dioxo-3,4-dihydropyriMidin-1(2H)-yl)Methyl)benzonitrile
- CAS:1268836-55-0
- MF:C31H30N8O4
- Structure:
- Chemical Name:(R)-2-((6-(3-((3-(2-cyanobenzyl)-1-Methyl-2,6-dioxo-1,2,3,6-tetrahydropyriMidin-4-yl)aMino)piperidin-1-yl)-3-Methyl-2,4-dioxo-3,4-dihydropyriMidin-1(2H)-yl)Methyl)benzonitrile
- CAS:1268836-55-0
- MF:C31H30N8O4
- Structure:
- Chemical Name:1-Pyrrolidinecarboxylic acid, 4-oxo-2-(3-thiazolidinylcarbonyl)-, 1,1-diMethylethyl ester, (2R)-
- CAS:1415908-67-6
- MF:C13H20N2O4S
- Structure:
- Chemical Name:(2R,3S)-2-[(1R)-1-[3,5-Bis(trifluoroMethyl)phenyl]ethoxy]-3-(phenyl)Morpholine hydrochloride
- CAS:874460-46-5
- MF:C20H20ClF6NO2
- Chemical Name:AlMotriptan iMpurity
- CAS:
- MF:
- Chemical Name:AlMotriptan iMpurity
- CAS:
- MF:
- Structure:
- Chemical Name:FaMotidine iMpurity
- CAS:130463-35-3
- MF:C5H8N4S2.Na
- Chemical Name:Nitrendipine iMpurity
- CAS:
- MF:
- Structure:
- Chemical Name:TraMadol EP IMpurity-C
- CAS:66170-31-8
- MF:C16H24ClNO
- Structure:
- Chemical Name:Anastrozole IMpurity (3-(1-Cyano-1-Methylethyl)-alfa,alfa-diMethyl-5-(1H-,1,2,4-triazole-1-ylMethyl)-benzeneacetic acid)
- CAS:1338800-82-0
- MF:C17H20N4O2
- Structure:
- Chemical Name:Anastrozole IMpurity (3-(1-Cyano-1-Methylethyl)-alfa,alfa-diMethyl-5-(1H-,1,2,4-triazole-1-ylMethyl)-benzeneacetic acid)
- CAS:1338800-82-0
- MF:C17H20N4O2
- Chemical Name:AtracuriuM IMpurity K (Mixture of cis, trans, cis, cis(K1 & K2), tans, trans IsoMer)
- CAS:
- MF:
- Chemical Name:ChlorphenaMine IMpurity B
- CAS:
- MF:
- Structure:
- Chemical Name:Clozapine EP IMpurity D
- CAS:65514-71-8
- MF:C18H21ClN4O
- Chemical Name:Febuxostat IMpurity (2-(3-carboxy-4-isobutyloxyphenyl)-4-Methylthiazole-5-carboxylic acid)
- CAS:
- MF:
- Structure:
- Chemical Name:Fluconazole IMpurity I
- CAS:
- MF:C13H12F2N6O
- Structure:
- Chemical Name:IMidafenacin Related CoMpound 1 (4-(1H-IMidzol-1-yl)-2,2-DiphenylbutanaMide)
- CAS:170105-20-1
- MF:C19H19N3O
- Structure:
- Chemical Name:IMidafenacin Related CoMpound 6 (4-AcetiMidoylaMino-2,2-DiphenylbutanaMide)
- CAS:503598-33-2
- MF:C18H21N3O
- Structure:
- Chemical Name:Lansoprazole IMpurity H
- CAS:1346598-28-4
- MF:C23H16F3N5OS
- Structure:
- Chemical Name:LevetiracetaM IMurity (L-2-AMinobutanaMide HCl,S-2-AMinobutanaMide HCl)
- CAS:1933471-30-7
- MF:C8H14N2O3
- Chemical Name:Milrinone IMpurity 4
- CAS:
- MF:
- Structure:
- Chemical Name:Nebivolol O-Beta-D-Glucuronide
- CAS:1698091-61-0
- MF:C22H27NO4
- Chemical Name:Nicergoline IMp. C (EP)
- CAS:
- MF:
- Chemical Name:Perindopril IMpurity E
- CAS:
- MF:
- Structure:
- Chemical Name:Pitavastatin 3-Oxo SodiuM
- CAS:2245811-12-3
- MF:C25H22FNO4
- Structure:
- Chemical Name:PraMipexole IMp.BI-II828BS
- CAS:
- MF:C20H32N6S2
- Chemical Name:Propofol IMpurity F
- CAS:
- MF:
- Structure:
- Chemical Name:Sertraline IMpurity (SRTRC-3)
- CAS:91797-76-1
- MF:C17H17Cl2N
- Structure:
- Chemical Name:Terbutaline IMpurity B
- CAS:94120-05-5
- MF:C13H19NO3
- Structure:
- Chemical Name:Benzoic acid, 4-[(4-Methyl-1-piperazinyl)Methyl]-3-(trifluoroMethyl)-
- CAS:859282-11-4
- MF:C14H17F3N2O2
- Structure:
- Chemical Name:5-chloro-2,3-diphenylpyrazine
- CAS:41270-66-0
- MF:C16H11ClN2
- Chemical Name:Canagliflozin iMpurity
- CAS:2648347-42-4
- MF:
- Structure:
- Chemical Name:Vortioxetine iMpurity
- CAS:853745-55-8
- MF:C10H14BrClN2
- Structure:
- Chemical Name:PD 312236
- CAS:501666-24-6
- MF:C20H35NO11
- Structure:
- Chemical Name:(17α)-3,3-[1,2-Ethanediylbis(oxy)]-17-hydroxy-19-norpregna-5(10),9(11)-diene-21-nitrile
- CAS:190662-30-7
- MF:C22H29NO3
- Structure:
- Chemical Name:(S)-4-(4-Hydrazinobenzyl)-2-oxazolidinone Hydrochloride
- CAS:139264-57-6
- MF:C10H14ClN3O2
- Structure:
- Chemical Name:1-[4-(4-AMino-6,7-diMethoxy-2-quinazolinyl)-1-piperazinyl]-5-hydroxy-1-pentanone
- CAS:109678-71-9
- MF:C19H27N5O4
- Structure:
- Chemical Name:4-[2-(2-AMino-4,5,6,7-tetrahydro-4,6-dioxo-3H-pyrrolo[2,3-d]pyriMidin-5-yl)ethyl]benzoic Acid
- CAS:193265-47-3
- MF:C15H14N4O4