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Pharmaceutical Impurity Reference Standards
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- Structure:
- Chemical Name:Amlodipine Impurity 27
- CAS:2832589-38-3
- MF:C26H29ClN2O7S
- Structure:
- Chemical Name:3-(4-Methylimidazol-1-yl)-5-trifluoromethylbenzoic acid
- CAS:641571-13-3
- MF:C12H9F3N2O2
- Structure:
- Chemical Name:3-Morpholinopropyl bromide
- CAS:125422-83-5
- MF:C7H14BrNO
- Structure:
- Chemical Name:2,4'-Diamino[sulfonylbisbenzene]
- CAS:27147-69-9
- MF:C12H12N2O2S
- Structure:
- Chemical Name:2-P-TOLYLOXYMETHYL-OXIRANE
- CAS:2186-24-5
- MF:C10H12O2
- Structure:
- Chemical Name:3-Hydroxyazobenzene
- CAS:2437-11-8
- MF:
- Structure:
- Chemical Name:Astragalin 7-O-β-D-glucopyranoside
- CAS:25615-14-9
- MF:C27H30O16
- Chemical Name:LS01-I01
- CAS:
- MF:
- Structure:
- Chemical Name:4-(5-CHLORO-2-THIENYL)-1,3-THIAZOL-2-AMINE
- CAS:123971-45-9
- MF:C7H5ClN2S2
- Structure:
- Chemical Name:α,α-Dibromo-o-tolunitrile
- CAS:655-63-0
- MF:C8H5Br2N
- Structure:
- Chemical Name:7-CHLORO-1-ETHYL-6-FLUORO-4-OXO-1,4-DIHYDRO-[1,8]NAPHTHYRIDINE-3-CARBOXYLIC ACID
- CAS:79286-73-0
- MF:C11H8ClFN2O3
- Structure:
- Chemical Name:HYDRIDE-L
- CAS:41639-74-1
- MF:C18H22O4
- Structure:
- Chemical Name:2-Amino-4-trifluoromethoxybenzothiazole
- CAS:235101-36-7
- MF:C8H5F3N2OS
- Structure:
- Chemical Name:7-[(4S)-4-Amino-6-azaspiro[2.4]heptan-6-yl]-8-chloro-6-fluoro-1-[(1R,2S)-2-fluorocyclopropyl]-4-oxoquinoline-3-carboxylic acid
- CAS:127254-10-8
- MF:C19H18ClF2N3O3
- Structure:
- Chemical Name:Sitagliptin Carbamoyl -D-Glucuronide
- CAS:940002-59-5
- MF:C23H23F6N5O9
- Structure:
- Chemical Name:5-Hydroxy Desloratadine
- CAS:117811-12-8
- MF:C19H19ClN2O
- Chemical Name:N-(2-((4-amino-6-(3-amino-5-fluorophenyl)pyrimidin-5-yl)oxy)ethyl)-N-methylacrylamide
- CAS:
- MF:
- Structure:
- Chemical Name:3-bromo-5-((1-((4-methyl-5-oxo-4,5-dihydro-1H-1,2,4-triazol-3-yl) methyl)-2-oxo-4-(trifluoromethyl)-1,2-dihydropyridin-3-yl)oxy) benzonitrile
- CAS:2994626-87-6
- MF:C17H11BrF3N5O3
- Structure:
- Chemical Name:L-erythro-3-(3,4-Dihydroxyphenyl)serine
- CAS:34047-62-6
- MF:C9H11NO5
- Structure:
- Chemical Name:7-Phenyl-acetamido-deacetoxy-cephalosporanic-acid
- CAS:27255-72-7
- MF:C16H16N2O4S
- Structure:
- Chemical Name:O-PROPIONYLBENZOIC ACID
- CAS:2360-45-4
- MF:C10H10O3
- Structure:
- Chemical Name:3-METHOXY-L-TYROSINE
- CAS:300-48-1
- MF:C10H13NO4
- Structure:
- Chemical Name:(4S-cis)-6-(Cyanomethyl)-2,2-dimethyl-1,3-dioxane-4-acetic Acid 1,1-Dimethylethyl Ester
- CAS:196085-85-5
- MF:C14H23NO4
- Structure:
- Chemical Name:Triacetyl Aloe-emodin (Impurity A)
- CAS:25395-11-3
- MF:C21H16O8
- Structure:
- Chemical Name:O-Benzyl Posaconazole
- CAS:170985-86-1
- MF:C44H48F2N8O4
- Structure:
- Chemical Name:10-trans-Atorvastatin Acetonide tert-Butyl Ester
- CAS:1105067-90-0
- MF:C40H47FN2O5
- Structure:
- Chemical Name:3-Bromo Carbidopa
- CAS:1246819-09-9
- MF:C10H13BrN2O4
- Structure:
- Chemical Name:(4S,6R)-6-(Cyanomethyl)-2,2-dimethyl-1,3-dioxane-4-acetic Acid tert-Butyl Ester
- CAS:186508-95-2
- MF:C14H23NO4
- Structure:
- Chemical Name:(5R)-6-Cyano-5-hydroxy-3-oxo-hexanoic Acid tert-Butyl Ester
- CAS:125988-01-4
- MF:C11H17NO4
- Structure:
- Chemical Name:(4-Carboxy-3-ethoxy)phenyl Acetic Acid (Repaglinide Impurity)
- CAS:220438-80-2
- MF:C11H12O5
- Structure:
- Chemical Name:2-Chloromethyl-3,5-dimethylpyridin-4-ol
- CAS:220771-03-9
- MF:C8H10ClNO
- Structure:
- Chemical Name:(3S,5R)-6-Cyano-3,5-dihydroxy-hexanoic Acid tert-Butyl Ester
- CAS:186508-94-1
- MF:C11H19NO4
- Structure:
- Chemical Name:2-Methyl-6-[(4-methylphenyl)sulfonyl]-1,4,5,6-tetrahydroimidazo[4,5-d][1]benzazepine
- CAS:717917-14-1
- MF:C19H19N3O2S
- Structure:
- Chemical Name:(1R-4S)-4-[[(1,1-dimethylethoxy)carbonyl]amino]- 2-Cyclopentene-1-carboxylic acid methyl ester
- CAS:251326-99-5
- MF:C12H19NO4
- Structure:
- Chemical Name:O-Isobutyryl (R)-Fesoterodine
- CAS:1208313-13-6
- MF:C30H43NO4
- Structure:
- Chemical Name:Isopropyl Itraconazole
- CAS:89848-49-7
- MF:C34H36Cl2N8O4
- Structure:
- Chemical Name:(R)-(-)-Ibuprofen-d3
- CAS:121702-86-1
- MF:C13H18O2
- Structure:
- Chemical Name:(S,R,S,S)-Orlistat
- CAS:111466-63-8
- MF:C29H53NO5
- Structure:
- Chemical Name:N-Trityl Candesartan Ethyl Ester
- CAS:856414-35-2
- MF:C45H38N6O3
- Structure:
- Chemical Name:3R,4S-4-(4-methoxyphenyl)-1-methylpiperi dinyl] methanol
- CAS:127017-78-1
- MF:C14H21NO2
- Structure:
- Chemical Name:6H-Purin-6-one, 2-amino-1,9-dihydro-9-[(1R,3S,4R)-4-hydroxy-3-(hydroxymethyl)-2-methylenecyclopentyl]-
- CAS:188399-46-4
- MF:C12H15N5O3
- Structure:
- Chemical Name:4,4'-(2-HYDROXY-1,3-PROPANDIYLDIOXY)BIS(2-PHENYLACETAMIDE)
- CAS:141650-31-9
- MF:C19H22N2O5
- Structure:
- Chemical Name:Valsartan cyano analog methyl ester
- CAS:137863-90-2
- MF:C25H30N2O3
- Structure:
- Chemical Name:(8S)-2-BroMo α-Ergocryptine
- CAS:65700-36-9
- MF:C32H40BrN5O5
- Structure:
- Chemical Name:3-[4-(4-Chlorobenzoyl)phenoxy]-2-butanone (Fenofibrate IMpurity)
- CAS:217636-47-0
- MF:C17H15ClO3
- Structure:
- Chemical Name:5-(2-Chlorobenzyl)-thieno[3,2-c]pyridiniuM Chloride
- CAS:53885-64-6
- MF:C14H11Cl2NS
- Structure:
- Chemical Name:ClarithroMycin 9-OxiMe
- CAS:103450-87-9
- MF:C38H70N2O13
- Structure:
- Chemical Name:Desloratadine N-Hydroxypiperidine
- CAS:1193725-73-3
- MF:C19H19ClN2O
- Structure:
- Chemical Name:O-DesMethyl Venlafaxine Cyclic IMpurity
- CAS:1346601-55-5
- MF:C16H23NO2
- Structure:
- Chemical Name:rac-cis-2,3-Dichloro Sertraline Hydrochloride
- CAS:1198084-29-5
- MF:C17H18Cl3N
- Structure:
- Chemical Name:11β-Hydroperoxy Dienogest
- CAS:106111-43-7
- MF:C20H25NO4
- Structure:
- Chemical Name:2'-Nor ThiaMine
- CAS:7770-93-6
- MF:C11H15ClN4OS
- Structure:
- Chemical Name:6α-Methyl Hydrocortisone 21-Acetate
- CAS:1625-11-2
- MF:C24H34O6
- Structure:
- Chemical Name:N1-Losartanyl-losartan (Losartan IMpurity)
- CAS:230971-71-8
- MF:C44H44Cl2N12O
- Structure:
- Chemical Name:N2-Losartanyl-losartan (Losartan IMpurity)
- CAS:230971-72-9
- MF:C44H44Cl2N12O
- Structure:
- Chemical Name:N-Ethoxycarbonyl 7-ADCA
- CAS:72820-16-7
- MF:C11H14N2O5S
- Structure:
- Chemical Name:(E)-Olopatadine
- CAS:113806-06-7
- MF:C21H23NO3
- Structure:
- Chemical Name:NeMadipine B
- CAS:79925-38-5
- MF:C19H21Cl2NO4
- Structure:
- Chemical Name:N-[(3,4-DiMethoxy-2-pyridinyl)Methyl] Pantoprazole
- CAS:957470-59-6
- MF:C24H24F2N4O6S
- Structure:
- Chemical Name:4-Epi-6-epi Doxycycline
- CAS:97583-08-9
- MF:C22H24N2O8
- Structure:
- Chemical Name:Ethyl 3,4-O-Isopropylidene-5-O-methanesulfonylshikimate
- CAS:204254-84-2
- MF:C13H20O7S
- Structure:
- Chemical Name:2-PyrazinecarboxaMide, N,N',N''-[2,4,6-boroxintriyltris[[(1R)-3-Methylbutylidene]iMino[(1S)-2-oxo-1-(phenylMethyl)-2,1-ethanediyl]]]tris-
- CAS:390800-88-1
- MF:C57H69B3N12O9
- Structure:
- Chemical Name:D-hydroxyphenylglycylamoxicillin)
- CAS:188112-75-6
- MF:C24H26N4O7S
- Chemical Name:piperacillinylaMpicillin
- CAS:
- MF:
- Chemical Name:Celecoxib iMpurity-B
- CAS:
- MF:
- Chemical Name:EMtricitabine iMpurity B
- CAS:
- MF:
- Structure:
- Chemical Name:(S,S)-1,7-diazatricyclo[7.3.0.07,11]dodecane-2,6,8,12-tetrone
- CAS:14842-41-2
- MF:C10H10N2O4
- Structure:
- Chemical Name:1-Hydroxy-7-Methoxy-1,2,3,4-tetrahydronaphthalene
- CAS:32820-10-3
- MF:C11H14O2
- Structure:
- Chemical Name:BroMhexine Hydrochloride iMpurity DN-(2-AMino-5-broMobenzyl)-N-MethylcyclohexanaMine Dihydrochloride
- CAS:132004-28-5
- MF:C14H21BrN2
- Structure:
- Chemical Name:2-(DiMethylcarbaMoyl)benzoic acid, 97%
- CAS:20320-37-0
- MF:C10H11NO3
- Structure:
- Chemical Name:RAC DESMETHYL CITALOPRAM HYDROCHLORIDE
- CAS:97743-99-2
- MF:C19H19FN2O
- Structure:
- Chemical Name:rac-3-Oxo Atorvastatin SodiuM Salt
- CAS:1391052-00-8
- MF:C33H34FN2NaO5
- Structure:
- Chemical Name:2-Demethoxy-4-methoxy urapidil
- CAS:34661-79-5
- MF:C20H29N5O3
- Structure:
- Chemical Name:Ribavirin IMpurity F
- CAS:58151-87-4
- MF:C10H14N4O6
- Structure:
- Chemical Name:4-[-((-((4-(5-(Bis(2-hydroxyethyl)aMino)-1-Methyl-1H-benzo[d]iMidazol-2-yl)butanoyl)oxy)ethyl)(2-hydroxyethyl)aMino)-1-Methyl-1H-benzo[d]iMidazol-2-yl)butanic Acid
- CAS:1228551-91-4
- MF:C32H41Cl3N6O4
- Structure:
- Chemical Name:3-(6,7-Dihydro-2-Methyl-7-oxo-3-propyl-2H-pyrazolo[4,3-d]pyriMidin-5-yl)-4-ethoxy-benzenesulfonyl Chloride
- CAS:501120-42-9
- MF:C17H19ClN4O4S
- Structure:
- Chemical Name:(3R,4S)-rel-3-[(1,3-Benzodioxol-5-yloxy)Methyl]-4-(4'-fluoro[1,1'-biphenyl]-4-yl)-piperidine Hydrochloride
- CAS:1217655-87-2
- MF:C25H25ClFNO3
- Structure:
- Chemical Name:(16α)-16,17-[Butylidenebis(oxy)]-21-hydroxypregna-1,4-diene-3,11,20-trione
- CAS:216453-74-6
- MF:C25H32O6
- Structure:
- Chemical Name:6(S)-Hydroperoxy Simvastatin
- CAS:149949-01-9
- MF:C25H38O7
- Structure:
- Chemical Name:Russupteridine IV
- CAS:2535-20-8
- MF:C13H18N4O6
- Structure:
- Chemical Name:2-[(1-Benzylpiperidin-4-yl)hydroxyMethyl]-5,6-diMethoxyindan-1-one
- CAS:197010-20-1
- MF:C24H29NO4
- Structure:
- Chemical Name:5,6-trans-Ergocalciferol
- CAS:51744-66-2
- MF:C28H44O
- Structure:
- Chemical Name:(5R)-ethyl 5-((1R,3aS,7aR)-4-((E)-2-((3S,5R)-3,5-bis(tert-butyldiMethylsilyloxy)-2-Methylenecyclohexylidene)ethyl)-7a-Methyloctahydro-1H-inden-1-yl)hexanoate
- CAS:169900-32-7
- MF:C39H70O4Si2
- Structure:
- Chemical Name:2-isonicotinoyl-5,6-diMethoxy-2,3-dihydro-1H-inden-1-one
- CAS:923571-15-7
- MF:C17H15NO4
- Structure:
- Chemical Name:4-(2-nitrophenyl)Morpholin-3-one
- CAS:845729-41-1
- MF:C10H10N2O4
- Structure:
- Chemical Name:Irbesartan IMpurity E
- CAS:
- MF:C25H28N6O
- Structure:
- Chemical Name:LeflunoMide EP IMpurity G
- CAS:724429-16-7
- MF:C12H12N2O2
- Chemical Name:Telmisartan impurity C
- CAS:
- MF:
- Chemical Name:Itraconazole iMpurity E
- CAS:
- MF:
- Structure:
- Chemical Name:Edoxaban Isomer (RRR)
- CAS:1255529-24-8
- MF:C24H30ClN7O4S
- Structure:
- Chemical Name:1-NaphthaleneacetaMide, 1,2,3,4-tetrahydro-7-Methoxy-
- CAS:92041-01-5
- MF:C13H17NO2
- Structure:
- Chemical Name:DO2A
- CAS:112193-75-6
- MF:C12H24N4O4
- Structure:
- Chemical Name:7-ethyl-5H-chroMeno[2,3-b]pyridin-5-one
- CAS:53944-31-3
- MF:C14H11NO2
- Structure:
- Chemical Name:2-Methyl-10H-thieno[2,3-b][1,5]benzodiazepin-4-aMine
- CAS:612503-08-9
- MF:C12H11N3S
- Chemical Name:IMp. A (EP): 8-Chloro-5,10-dihydro-11H-dibenzo[b,e][1,4]diazepin-11-one
- CAS:
- MF:
- Chemical Name:IMp. C (EP): 8-Chloro-11-(piperazin-1-yl)-5H- dibenzo[b,e][1,4]diazepine
- CAS:
- MF:
- Structure:
- Chemical Name:21-Dehydro-16α-hydroxy Prednisolone
- CAS:1188271-73-9
- MF:C21H26O6
- Structure:
- Chemical Name:(6α,11β)-11,20-Dihydroxy-6-Methyl-3-oxopregna-1,4,17(20)-trien-21-al
- CAS:1338549-02-2
- MF:C22H28O4
- Structure:
- Chemical Name:(1R)-2-chloro-1-(3,4-difluorophenyl)-1-ethanol
- CAS:1212376-05-0
- MF:C8H7ClF2O
- Structure:
- Chemical Name:2-[[(3aR,4S,6R,6aS)-6-[7-Chloro-5-(propylthio)-3H-1,2,3-triazolo[4,5-d]pyrimidin-3-yl]tetrahydro-2,2-dimethyl-4H-cyclopenta-1,3-dioxol-4-yl]oxy]-ethanol
- CAS:376608-75-2
- MF:C17H24ClN5O4S