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Pharmaceutical Impurity Reference Standards
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- Chemical Name:Moxifloxacin EP Impurity E HCl
- CAS:
- MF:
- Structure:
- Chemical Name:Pantoprazole Impurity 11
- CAS:172282-50-7
- MF:C7H8F2N2O
- Structure:
- Chemical Name:Solifenacin Related Compound 24
- CAS:1682642-69-8
- MF:C15H23ClN2
- Structure:
- Chemical Name:Ticagrelor Related Compound 44
- CAS:1431867-40-1
- MF:C8H12ClN3OS
- Structure:
- Chemical Name:(trans)-2-(3,4-difluorophenyl)cyclopropanecarboxamide
- CAS:1006614-51-2
- MF:C10H9F2NO
- Structure:
- Chemical Name:2-cyano-N-methyl-N-((3R,4R)-4-methyl piperidin-3-yl) Acetamide hydrochloride
- CAS:1640971-87-4
- MF:C10H18ClN3O
- Structure:
- Chemical Name:6-methyl-N1-(4-methyl-6-(pyridin-3-yl)pyrimidin-2-yl)benzene-1,3-diamine
- CAS:
- MF:C17H17N5
- Structure:
- Chemical Name:5-METHOXY-2-BENZIMIDAZOLINONE
- CAS:2080-75-3
- MF:C8H8N2O2
- Structure:
- Chemical Name:WPDCFRNNHUYQGW-IUXPMGMMSA-N
- CAS:1628639-06-4
- MF:C21H23NO4
- Structure:
- Chemical Name:tert-Butyl 2-((4S,6S)-6-(chloromethyl(02,2-1,3-dioxan-4-yl)acetate
- CAS:521974-00-5
- MF:C13H23ClO4
- Structure:
- Chemical Name:Cefadroxil Sulfoxide
- CAS:182290-77-3
- MF:C16H17N3O6S
- Structure:
- Chemical Name:GSFIWDGFHNAUFU-UHFFFAOYSA-N
- CAS:2125702-80-7
- MF:C16H29N5O4
- Structure:
- Chemical Name:2,5-dichloro-N,N-dimethylbenzamide
- CAS:90526-01-5
- MF:C9H9Cl2NO
- 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:Allopurinol Related CoMpound F
- CAS:321571-07-7
- MF:C12H14N4O4
- Structure:
- Chemical Name:N-[(n-butylaMino)carbonyl]-4-[(3-Methylphenyl)aMino]-3-pyridinesulfonaMide
- CAS:160972-33-8
- MF:C17H22N4O3S
- Structure:
- Chemical Name:Desethyl Sildenafil
- CAS:139755-91-2
- MF:C20H26N6O4S
- Structure:
- Chemical Name:1-Propanol,3-[(1,1-dimethylethyl)amino]-2-[[4-(4-morpholinyl)-1,2,5-thiadiazol-3-yl]-oxy]-
- CAS:59697-06-2
- MF:C13H24N4O3S
- Chemical Name:Tretinoin-d6 (Retinoic Acid-d6, Isotretinoin EP Impurity A-d6)
- CAS:
- MF:
- Chemical Name:2-(hydroxy(phenyl)methyl)-N-(2-hydroxyethyl)benzamide
- CAS:
- MF:
- Structure:
- Chemical Name:Anagrelide impurity 4
- CAS:1092352-99-2
- MF:C10H6Cl3N3O
- Structure:
- Chemical Name:Anagrelide impurity 4
- CAS:1092352-99-2
- MF:C10H6Cl3N3O
- Structure:
- Chemical Name:rac Cetirizine N-Oxide > 70% by HPLC (Mixture of Diastereomers)
- CAS:1076199-80-8
- MF:C21H25ClN2O4
- Structure:
- Chemical Name:(S)-N-Didemethyl Dapoxetine
- CAS:147199-40-4
- MF:C19H19NO
- Structure:
- Chemical Name:Hydroxy Flunarizine
- CAS:87166-81-2
- MF:C26H26F2N2O
- Structure:
- Chemical Name:1-METHYL-4-NITRO-3-PROPYL-1H-PYRAZOLE-5-CARBOXYLIC ACID
- CAS:139756-00-6
- MF:C8H11N3O4
- Structure:
- Chemical Name:6-Hydroxy Nicorandil
- CAS:113743-17-2
- MF:C8H9N3O5
- Structure:
- Chemical Name:trans-Itraconazole
- CAS:252964-65-1
- MF:C35H38Cl2N8O4
- Structure:
- Chemical Name:N-(2-Pyridyl)oxamic Acid
- CAS:13120-39-3
- MF:C7H6N2O3
- Structure:
- Chemical Name:(trans)-4-Propyl-1-methyl-L-proline
- CAS:13380-36-4
- MF:C9H17NO2
- Structure:
- Chemical Name:N-Nordextromethorphan
- CAS:1531-23-3
- MF:C17H23NO
- Structure:
- Chemical Name:(S,S,R,R)-Orlistat
- CAS:111466-62-7
- MF:C29H53NO5
- Structure:
- Chemical Name:17β-Carboxy-17-desoxy Dexamethasone
- CAS:75262-69-0
- MF:C21H27FO4
- Structure:
- Chemical Name:1-(dimethoxymethyl)-3-methoxybenzene
- CAS:59276-28-7
- MF:C10H14O3
- Structure:
- Chemical Name:Benazepril impurity A
- CAS:
- MF:C24H28N2O5
- Structure:
- Chemical Name:3S,4R-4-[phenyl-1-methylpiperidinyl] methanol
- CAS:176022-03-0
- MF:C13H19NO
- Structure:
- Chemical Name:N-Desisopropyl-N-forMyl Bisoprolol
- CAS:1346602-59-2
- MF:C16H25NO5
- Structure:
- Chemical Name:N-DesMethyl Olopatadine
- CAS:113835-92-0
- MF:C20H21NO3
- Structure:
- Chemical Name:10-Keto DextroMethorphan
- CAS:57969-05-8
- MF:C18H23NO2
- Structure:
- Chemical Name:2'-[(1H-Tetrazol-5-yl)biphenyl-4-yl]Methanol
- CAS:160514-13-6
- MF:C14H12N4O
- Structure:
- Chemical Name:ent-Paroxol
- CAS:389573-45-9
- MF:C13H18FNO
- Structure:
- Chemical Name:Ethyl α-Thioglucopyranoside
- CAS:13533-58-9
- MF:C8H16O5S
- Structure:
- Chemical Name:Febuxostat Acyl-β-D-glucuronide
- CAS:1351692-92-6
- MF:C22H24N2O9S
- Structure:
- Chemical Name:Keto Bisoprolol
- CAS:864544-37-6
- MF:C18H29NO5
- Structure:
- Chemical Name:Olopatadine Carbaldehyde DISCONTINUED
- CAS:1376615-97-2
- MF:C21H23NO2
- Structure:
- Chemical Name:5-Chloro-1-methyl-4-nitroimidazole
- CAS:
- MF:C4H4ClN3O2
- Chemical Name:Nisoldipine Related Compound II
- CAS:
- MF:
- Structure:
- Chemical Name:5-Chloro-N1-Methylbenzene-1,2-diaMine
- CAS:84859-27-8
- MF:C7H9ClN2
- Structure:
- Chemical Name:(1'S,3'S,4'S)-Entecavir IsoMer
- CAS:1367369-80-9
- MF:C12H15N5O3
- Structure:
- Chemical Name:Zolmitriptan Related Compound B (20 mg) ((S)-2-Amino-3-{3-[2-(dimethylamino)ethyl]-1H-indol-5-yl}propan-1-ol)
- CAS:139264-69-0
- MF:C15H23N3O
- Structure:
- Chemical Name:1-BENZYL-N,4-DIMETHYLPIPERIDIN-3-AMINE DIHYDROCHLORIDE
- CAS:384338-23-2
- MF:C14H22N2
- Structure:
- Chemical Name:(R,Z)-2-((R)-((Z)-2-(2-aMinothiazol-4-yl)-2-(hydroxyiMino)acetaMido)(carboxy)Methyl)-5-ethylidene-5,6-dihydro-2H-1,3-thiazine-4-carboxylic acid
- CAS:178422-39-4
- MF:C14H15N5O6S2
- Structure:
- Chemical Name:(R)-N-DeMethyl Dapoxetine
- CAS:1202160-36-8
- MF:C20H21NO
- Structure:
- Chemical Name:14,15-Dehydro Budesonide
- CAS:131918-64-4
- MF:C25H32O6
- Structure:
- Chemical Name:2-(BenzylMethylaMino)-3',4'-dihydroxyacetophenone
- CAS:36467-25-1
- MF:C16H17NO3
- Structure:
- Chemical Name:2'-O-(5'-Deoxy-β-D-ribofuranosyl) Capecitabine
- CAS:1262133-66-3
- MF:C20H30FN3O9
- Structure:
- Chemical Name:4-Defluoro-4-hydroxy Gefitinib
- CAS:847949-50-2
- MF:C22H25ClN4O4
- Structure:
- Chemical Name:Iso Ganciclovir
- CAS:86357-09-7
- MF:C9H13N5O4
- Structure:
- Chemical Name:(1S,3R)-1-Benzo[1,3]dioxol-5-yl-2-(2-chloro-acetyl)-2,3,4,9-tetrahydro-1H-b-carboline-3-carboxylic Acid Methyl Ester
- CAS:629652-40-0
- MF:C22H19ClN2O5
- Structure:
- Chemical Name:2-Butyl-1,6-dihydro-N,N,4-trimethyl-6-oxo-1-[[2'-[1-(triphenylmethyl)-1H-tetrazol-5-yl][1,1'-biphenyl]-4-yl]methyl]-5-pyrimidineacetamide
- CAS:503155-67-7
- MF:C46H45N7O2
- Structure:
- Chemical Name:O-De(3-fluorobenzyl) Lapatinib
- CAS:1268997-70-1
- MF:C22H21ClN4O4S
- Structure:
- Chemical Name:5-Des[2-(tert-butylaMino)] BaMbuterol-5-ethylenediol
- CAS:112935-92-9
- MF:C14H20N2O6
- Structure:
- Chemical Name:Desloratadine Epoxide
- CAS:1346604-23-6
- MF:C19H19ClN2O
- Structure:
- Chemical Name:Menaquinone 4 2,3-Epoxide
- CAS:72908-86-2
- MF:C31H40O3
- Structure:
- Chemical Name:D-Phenylalanyl Nateglinide
- CAS:944746-48-9
- MF:C28H36N2O4
- Structure:
- Chemical Name:Felodipine 3,5-DiMethyl Ester
- CAS:91189-59-2
- MF:C17H17Cl2NO4
- Structure:
- Chemical Name:Moxifloxacin Methyl Ester
- CAS:721970-35-0
- MF:C22H26FN3O4
- Structure:
- Chemical Name:Atomoxetine Related Compound C (10 mg) (N-methyl-3-phenyl-3-(p-tolyloxy)propan-1-amine hydrochloride)
- CAS:873310-31-7
- MF:C17H22ClNO
- Structure:
- Chemical Name:Dofetilide Related Compound A (25 mg) (N-[4-(2-(2-[4-(methanesulfonamido)phenoxy]ethyl)amino)phenyl]methanesulfonamide)
- CAS:176447-94-2
- MF:C18H25N3O5S2
- Structure:
- Chemical Name:Acyclovir IMpurity C
- CAS:91702-61-3
- MF:C8H11N5O3
- Structure:
- Chemical Name:Nicergoline-5-Chloro Analogue
- CAS:38536-28-6
- MF:C24H26ClN3O3
- Structure:
- Chemical Name:1-(3-aMino-5-(benzyloxy)-2-hydroxyphenyl)ethanone
- CAS:861841-90-9
- MF:C15H15NO3
- Structure:
- Chemical Name:(2RS)-2-Hydroxy-2-[4-(2-Methylpropyl)phenyl]propanoic Acid
- CAS:
- MF:C13H18O3
- Structure:
- Chemical Name:(3RS)-1,3-Bis[4-(2-Methylpropyl) phenyl]butan-1-one
- CAS:
- MF:C24H32O
- Structure:
- Chemical Name:2-[4-(2-Methylpropyl)phenyl] ethanol
- CAS:2143535-25-3
- MF:C24H32O
- Structure:
- Chemical Name:1-cyclopropyl-6-fluoro-8-hydroxy-4-oxo-7-((4aR,7aR)-tetrahydro-1H-pyrrolo[3,4-b]pyridin-6(2H,7H,7aH)-yl)-1,4-dihydroquinoline-3-carboxylic acid hydrobroMide
- CAS:1292904-74-5
- MF:C20H23BrFN3O4
- Structure:
- Chemical Name:IMp. K (EP)
- CAS:40610-41-1
- MF:C13H17NO3
- Structure:
- Chemical Name:(Z)-Methyl 3-((2'-(N'-hydroxycarbaMiMidoyl)biphenyl-4-yl)Methyl)-2-oxo-2,3-dihydro-1H-benzo[d]iMidazole-4-carboxylate
- CAS:1499167-72-4
- MF:C23H20N4O4
- Structure:
- Chemical Name:4-(4-fluorobenzoyl)-3-(hydroxyMethyl)benzonitrile
- CAS:260371-16-2
- MF:C15H10FNO2
- Structure:
- Chemical Name:ATV-FX1 sodiuM salt
- CAS:1315629-79-8
- MF:C33H34FN2NaO7
- Structure:
- Chemical Name:Montelukast Impurity H
- CAS:851755-56-1
- MF:C34H32ClNO4S
- Structure:
- Chemical Name:SalMeterol EP IMpurity F
- CAS:1391054-40-2
- MF:C25H37NO3
- Structure:
- Chemical Name:[6-Hydroxy-2-(4-hydroxyphenyl)benzo[b]thiophen-7-yl]
- CAS:1391054-73-1
- MF:C28H27NO4S
- Structure:
- Chemical Name:(R)-α-Methyl-N-[3-[3-(trifluoroMethyl)phenyl]Methyl]-1-naphthaleneMethaneaMine Hydrochloride
- CAS:1229225-42-6
- MF:C20H19ClF3N
- Structure:
- Chemical Name:3(S)-Hydroperoxy Simvastatin
- CAS:1092716-44-3
- MF:C25H38O7
- Structure:
- Chemical Name:2(RS)-4-Methyl-1-(3-Methylpyridin-2-yl)-2-phenylpiperazine
- CAS:191546-94-8
- MF:C17H21N3
- Structure:
- Chemical Name:5-Methyl-2-(1H-1,2,3-triazol-1-yl)benzoic acid
- CAS:1149352-55-5
- MF:C10H9N3O2
- Structure:
- Chemical Name:9-ethyl-8-iodo-6,6-diMethyl-11-oxo-6,11-dihydro-5H-benzo[b]carbazole-3-carbonitrile
- CAS:1256584-80-1
- MF:C21H17IN2O
- Structure:
- Chemical Name:9-ethyl-8-iodo-6,6-diMethyl-11-oxo-6,11-dihydro-5H-benzo[b]carbazole-3-carbonitrile
- CAS:1256584-80-1
- MF:C21H17IN2O
- 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: