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Pharmaceutical Impurity Reference Standards
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- Structure:
- Chemical Name:N-Desmethyl Citalopram-d4 Oxalate
- CAS:62498-68-4
- MF:C21H21FN2O5
- Structure:
- Chemical Name:2-Ethoxy-6-nitro-9-acridinamine
- CAS:20304-70-5
- MF:C15H13N3O3
- Structure:
- Chemical Name:4-O-Carboxymethyl-21-deoxy-20-hydroxy-21-oxorifamycin
- CAS:15271-73-5
- MF:C39H47NO15
- Structure:
- Chemical Name:(3,4-Dimethoxyphenyl)isopropyl ketone
- CAS:14046-55-0
- MF:C12H16O3
- Structure:
- Chemical Name:2,3-Dichloro-5,6-diphenylpyrazine
- CAS:57038-62-7
- MF:C16H10Cl2N2
- Structure:
- Chemical Name:DIDESMETHYL CITALOPRAM-D4
- CAS:62498-69-5
- MF:C18H17FN2O
- Structure:
- Chemical Name:Bis(3-hydroxypropyl) persulfide
- CAS:30453-21-5
- MF:C6H14O2S2
- Structure:
- Chemical Name:CHLOROAC-PRO-OH
- CAS:23500-10-9
- MF:C7H10ClNO3
- Structure:
- Chemical Name:2,4-Dihydro-4-[4-[4-(4-methoxyphenyl)-1-piperazinyl]phenyl]-2-(1-methylpropyl)-3H-1,2,4-triazol-3-one
- CAS:252964-68-4
- MF:C23H29N5O2
- Structure:
- Chemical Name:2-(2-Methoxyphenoxy)ethanol
- CAS:18181-71-0
- MF:C9H12O3
- Structure:
- Chemical Name:2-(3-Chloro-2-hydroxypropyl)-2H-isoindole-1,3-dione
- CAS:19667-37-9
- MF:C11H10ClNO3
- Structure:
- Chemical Name:4,6-Dibromo-m-cresol
- CAS:13321-76-1
- MF:C7H6Br2O
- Structure:
- Chemical Name:Metoprolol Acid Ethyl Ester
- CAS:29112-40-1
- MF:C16H25NO4
- Structure:
- Chemical Name:6-Hydroxy Desloratadine
- CAS:119410-05-8
- MF:C19H19ClN2O
- Structure:
- Chemical Name:10-Acetyloxy Oxcarbazepine
- CAS:113952-21-9
- MF:C17H14N2O4
- Structure:
- Chemical Name:9-[[2-(α-L-Alanyloxy)ethoxy]methyl]guanine Hydrochloride
- CAS:84499-63-8
- MF:C11H17ClN6O4
- Structure:
- Chemical Name:Irinotecan Impurity 26
- CAS:86639-51-2
- MF:C22H20N2O5
- Structure:
- Chemical Name:Bis(aminoethoxy) Amlodipine
- CAS:721958-74-3
- MF:C22H30ClN3O6
- Structure:
- Chemical Name:7,8,9,10-Dehydro Doxorubicinone
- CAS:1159977-23-7
- MF:C21H14O8
- Structure:
- Chemical Name:4-tert-Butyl-2,6-dimethyl-3-hydroxyphenylacetamide (Oxymetazoline hydrochloride impurity)
- CAS:55699-13-3
- MF:C14H21NO2
- Structure:
- Chemical Name:(S)-N-Demethyl Dapoxetine
- CAS:147199-39-1
- MF:C20H21NO
- Structure:
- Chemical Name:Famotidine Related Compound A Hydrochloride
- CAS:76833-47-1
- MF:C8H15ClN6S2
- Structure:
- Chemical Name:Des(trifluoroethyl) Lansoprazole Sulfide
- CAS:131926-97-1
- MF:C14H13N3OS
- Structure:
- Chemical Name:Desulfo Aztreonam
- CAS:102579-59-9
- MF:C13H17N5O5S
- Structure:
- Chemical Name:Mosapride Citric Amide
- CAS:1215825-20-9
- MF:C27H31ClFN3O9
- Structure:
- Chemical Name:Ribavirin Related Compound A (15 mg) (1-beta-D-ribofuranosyl-1H-1,2,4-triazole-3-carboxylic acid)
- CAS:39925-19-4
- MF:C8H11N3O6
- Structure:
- Chemical Name:3-(3-TRIFLUOROMETHYL-PHENYL)-PROPYLAMINE
- CAS:104774-87-0
- MF:C10H12F3N
- Structure:
- Chemical Name:4-(3,4-Dichloro-phenyl)-3,4-dihydro-2H-naphthalen-1-one
- CAS:124379-29-9
- MF:C16H12Cl2O
- Structure:
- Chemical Name:(4-(2-(azepan-1-yl)ethoxy)phenyl)Methanol
- CAS:223251-16-9
- MF:C15H23NO2
- Structure:
- Chemical Name:4-HYDROXY PROPOFOL
- CAS:1988-10-9
- MF:C12H18O2
- Structure:
- Chemical Name:(1R,2R)-2-(3,4-difluorophenyl)cyclopropanecarboxylic acid
- CAS:220352-36-3
- MF:C10H8F2O2
- Structure:
- Chemical Name:2-Thiopheneacetic acid, α-hydroxy-α-2-thienyl-, (3R)-1-azabicyclo[2.2.2]oct-3-yl ester
- CAS:320347-97-5
- MF:C17H19NO3S2
- Chemical Name:benzbroMarone iMpurity
- CAS:
- MF:
- Structure:
- Chemical Name:Dasatinib iMpurity
- CAS:1184919-23-0
- MF:C22H27N7O2S
- Chemical Name:eszopiclone iMpurity
- CAS:
- MF:
- Structure:
- Chemical Name:IMidafenacin iMpurity
- CAS:503599-41-5
- MF:C18H20N2O2
- Structure:
- Chemical Name:latanoprost iMpurity
- CAS:733036-95-8
- MF:C25H35FO5
- Structure:
- Chemical Name:Irbesartan IMpurity D
- CAS:
- MF:C25H28N6O
- Structure:
- Chemical Name:Ondansetron HCl IMpurity-G
- CAS:99614-03-6
- MF:C17H17N3O
- Structure:
- Chemical Name:lithiuM 2-(4-(Methylsulfonyl)phenyl)acetate
- CAS:1421227-96-4
- MF:C9H11LiO4S
- Structure:
- Chemical Name:Anastrozole IMpurity (3-(1-Cyano-1-Methylethyl)-alfa,alfa-diMethyl-5-(1H-,1,2,4-triazole-1-ylMethyl)-benzeneacetaMide)
- CAS:120512-03-0
- MF:C17H21N5O
- Chemical Name:AtracuriuM IMpurity I (Mixture of cis, trans(I1), cis, cis(I2), tans, trans IsoMer)
- CAS:
- MF:
- Structure:
- Chemical Name:1-((2R,3R)-2-(benzyloxy)pentan-3-yl)-4-(4-(4-(4-hydroxyphenyl)piperazin-1-yl)phenyl)-1H-1,2,4-triazol-5(4H)-one
- CAS:2243786-01-6
- MF:C30H35N5O3
- Structure:
- Chemical Name:5-(3-fluorophenyl)-1H-pyrrole-3-carbaldehyde
- CAS:
- MF:C11H8FNO
- Structure:
- Chemical Name:1,4-Dihydro-2,6-dimethyl-4-(3-nitrophenyl)-3,5-pyridinedicarboxylic acid bis(1-methylethyl) ester
- CAS:21881-78-7
- MF:C21H26N2O6
- Structure:
- Chemical Name:2-(4-Methylphenyl)sulfonyloxyethanol
- CAS:42772-85-0
- MF:C9H12O4S
- Structure:
- Chemical Name:2-Azabicyclo[3.1.0]hexane-3-carbonitrile, 2-[(2S)-2-aMino-2-(3-hydroxytricyclo[3.3.1.13,7]dec-1-yl)acetyl]-, (1R,3R,5R)-
- CAS:1564265-94-6
- MF:C18H25N3O2
- Chemical Name:EMpagliflozin iMpurity 8
- CAS:
- MF:
- Structure:
- Chemical Name:EMpagliflozin iMpurity 13
- CAS:2125472-55-9
- MF:C23H25ClO8
- Structure:
- Chemical Name:6-Methyldi(ondansetron-3-de(1,2-diMethyl-1H-iMidazole))
- CAS:1365727-07-6
- MF:C27H26N2O2
- Structure:
- Chemical Name:(-)-Syringaresinol-4-O-beta-D-glucopyranoside
- CAS:137038-13-2
- MF:C28H36O13
- Structure:
- Chemical Name:Budesonide Impurity (1, 4-Androstadien-11-beta-16-alfa-diol-3, 17-dione)
- CAS:910299-74-0
- MF:C19H24O4
- Structure:
- Chemical Name:Etoricoxib Impurity 12
- CAS:646459-41-8
- MF:C21H16ClN3O2S
- Structure:
- Chemical Name:(S)-3-Methyl-1-(2-piperidin-1-ylphenyl)butylamine
- CAS:147769-93-5
- MF:C16H26N2
- Chemical Name:Ceftriaxone IMpurit C
- CAS:
- MF:
- Chemical Name:Flucloxacillin IMpurity G
- CAS:
- MF:
- Structure:
- Chemical Name:Gefitinib N-Oxide
- CAS:847949-51-3
- MF:C22H24ClFN4O4
- Structure:
- Chemical Name:Milrinone IMpurity 3
- CAS:98293-81-3
- MF:C12H7N3O3
- Structure:
- Chemical Name:Nicardipine Related CoMpound 4
- CAS:123973-71-7
- MF:C25H27N3O6
- Chemical Name:PraMipexole IMp.BI-II786BS
- CAS:
- MF:
- Chemical Name:Propofol IMpurity E
- CAS:
- MF:
- Chemical Name:Solifenacin Related CoMpound 5
- CAS:
- MF:
- Structure:
- Chemical Name:TelMisartan BroMo Ethyl Ester
- CAS:133085-87-7
- MF:C16H15BrO2
- Structure:
- Chemical Name:Tolterodine Lactol IMpurity
- CAS:209747-04-6
- MF:C16H16O2
- Chemical Name:Valsartan N1-Trityl IMpurity
- CAS:
- MF:
- Structure:
- Chemical Name:(3-Carbamoylallyl)trimethylammonium
- CAS:857162-57-3
- MF:C7H15N2O+
- Structure:
- Chemical Name:3-CHLORO-4-HYDROXYACETANILIDE
- CAS:3964-54-3
- MF:C8H8ClNO2
- Chemical Name:Apixaban IMpurity(BMS-591329-01)
- CAS:
- MF:
- Structure:
- Chemical Name:ent-14S-3-Methoxy-17-MethylMorphinan
- CAS:1453167-99-1
- MF:C18H25NO
- Structure:
- Chemical Name:PD 224378
- CAS:501665-88-9
- MF:C20H35NO11
- Structure:
- Chemical Name:(rac,syn)-4-Deschloro-sertraline
- CAS:871838-58-3
- MF:C17H18ClN
- Structure:
- Chemical Name:1-[2-(DiMethylaMino)-1-phenylethyl]cyclohexanol
- CAS:93413-86-6
- MF:C16H25NO
- Structure:
- Chemical Name:1-[4-(2-Methoxyethenyl)phenoxy]-3-[(1-Methylethyl)aMino]-2-propanol
- CAS:82961-02-2
- MF:C15H23NO3
- Structure:
- Chemical Name:11-Desethyl Irinotecan
- CAS:103816-16-6
- MF:C31H34N4O6
- Structure:
- Chemical Name:5-Methoxy-2-[[(4-Methoxy-3,5-diMethyl-2-pyridinyl)Methyl]thio]-1H-benziMidazole N-Oxide
- CAS:142885-92-5
- MF:C17H19N3O3S
- Structure:
- Chemical Name:7-[[[(CyanoMethyl)thio]acetyl]aMino]-7-Methoxy Cephalosporanic Acid
- CAS:56796-16-8
- MF:C15H17N3O7S2
- Structure:
- Chemical Name:7S-Cefdinir
- CAS:178601-89-3
- MF:C14H13N5O5S2
- Structure:
- Chemical Name:Dehydroxy BroMocelecoxib
- CAS:170570-75-9
- MF:C17H13BrF3N3O2S
- Structure:
- Chemical Name:Desethylene Norfloxacin Hydrochloride
- CAS:75001-77-3
- MF:C14H16FN3O3
- Structure:
- Chemical Name:p-(2,3-Epoxypropoxy)benzyl Alcohol
- CAS:4204-78-8
- MF:C10H12O3
- Structure:
- Chemical Name:α-Etoposide
- CAS:100007-53-2
- MF:C29H32O13
- Structure:
- Chemical Name:N-Desmethyl-N-benzyl Sildenafil
- CAS:1446089-82-2
- MF:C28H34N6O4S
- Structure:
- Chemical Name:4-Hydroxy AtoMoxetine Oxalate
- CAS:457634-21-8
- MF:C19H23NO6
- Structure:
- Chemical Name:6-Chloro-1-Ethyl-4-Oxo-7-(Piperazin-1-yl)-1,4-Dihydroquinoline-3-Carboxylic acid
- CAS:67681-84-9
- MF:C16H18ClN3O3
- Structure:
- Chemical Name:Afatinib IMpurity J
- CAS:1456696-14-2
- MF:C18H22N4O4
- Chemical Name:Aprepitant iMpurity A
- CAS:
- MF:
- Structure:
- Chemical Name:Atorvastatin LactaM Phenanthrene CalciuM Salt
- CAS:1046378-58-8
- MF:C33H35CaFN2O6
- Chemical Name:Avanafil IMpurity 7
- CAS:
- MF:
- Structure:
- Chemical Name:Desfluoro flurbiprofen axetil
- CAS:1685278-08-3
- MF:C19H20O4
- Structure:
- Chemical Name:Desloratadine IMpurity 6
- CAS:38092-90-9
- MF:C20H21ClN2
- Structure:
- Chemical Name:Levofloxacin Tetrafluoro Impurity 2
- CAS:103995-33-1
- MF:C14H12F4O4
- Structure:
- Chemical Name:Mupirocin Impurity C
- CAS:
- MF:C26H44O9
- Structure:
- Chemical Name:Verapamil Impurity H
- CAS:67018-83-1
- MF:C26H36N2O4
- Structure:
- Chemical Name:Warfarin Impurity 1
- CAS:55901-61-6
- MF:C13H14O
- Structure:
- Chemical Name:Vitexin -4''-O-glucoside
- CAS:178468-00-3
- MF:C27H30O15
- Chemical Name:Aripiprazole EP impurity D
- CAS:
- MF:
- Structure:
- Chemical Name:Macitentan impurity B
- CAS:441796-13-0
- MF:C18H18Br2N6O4S
- Chemical Name:Meropenem IMP B
- CAS:
- MF:
- Structure:
- Chemical Name:tert-butyl 4-(6-bromopyridin-3-yl)piperazine-1-carboxylate
- CAS:412348-27-7
- MF:C14H20BrN3O2
- Structure:
- Chemical Name:ETHYL 3,4-EPOXYBUTANOATE
- CAS:32223-97-5
- MF:C6H10O3