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Pharmaceutical Impurity Reference Standards
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- Structure:
- Chemical Name:
- 2-Propylidenepropanedinitrile
- CAS:
- 52833-34-8
- MF:
- C6H6N2
- Structure:
- Chemical Name:
- 4,4'-Dihydroxyazoxybenzene
- CAS:
- 15596-57-3
- MF:
- C12H10N2O3
- Structure:
- Chemical Name:
- 5-[[(2-Aminoethyl)thio]methyl]-N,N-dimethyl-2-furfurylamine
- CAS:
- 66356-53-4
- MF:
- C10H18N2OS
- Structure:
- Chemical Name:
- 2-[2-(2-METHOXY-PHENOXY)-ETHYL]-ISOINDOLE-1,3-DIONE
- CAS:
- 26646-63-9
- MF:
- C17H15NO4
- Structure:
- Chemical Name:
- (3AS,7AS)-HEXAHYDRO-1H-ISOINDOLE-1,3(2H)-DIONE
- CAS:
- 117307-09-2
- MF:
- C8H11NO2
- Structure:
- Chemical Name:
- 3,5-androstadien-17-one
- CAS:
- 1912-63-6
- MF:
- C19H26O
- Structure:
- Chemical Name:
- 3-phenylpyrazin-2-ol
- CAS:
- 73200-73-4
- MF:
- C10H8N2O
- Structure:
- Chemical Name:
- 1-(Isopropylamino)-3-(4-methylphenoxy)propane-2-ol
- CAS:
- 5790-46-5
- MF:
- C13H21NO2
- Structure:
- Chemical Name:
- 5H-Dibenz[b,f]azepine-10,11-dione
- CAS:
- 19579-83-0
- MF:
- C14H9NO2
- Structure:
- Chemical Name:
- Ethanesulfonic acid ethyl ester
- CAS:
- 1912-30-7
- MF:
- C4H10O3S
- Structure:
- Chemical Name:
- DONEPEZIL HYDROCHLORIDE
- CAS:
- 110119-84-1
- MF:
- C24H30ClNO3
- Structure:
- Chemical Name:
- Amifostine Thiol Dihydrochloride
- CAS:
- 14653-77-1
- MF:
- C5H14N2S
- Structure:
- Chemical Name:
- Butyl Itraconazole
- CAS:
- 89848-51-1
- MF:
- C35H38Cl2N8O4
- Structure:
- Chemical Name:
- Betamethasone 9,11-Epoxide Propionate
- CAS:
- 205105-83-5
- MF:
- C25H32O6
- Structure:
- Chemical Name:
- 8-Methoxyquinolin-2(1H)-one
- CAS:
- 22614-69-3
- MF:
- C10H9NO2
- Structure:
- Chemical Name:
- 7-Bromo Epinastine
- CAS:
- 1217052-16-8
- MF:
- C16H14BrN3
- Structure:
- Chemical Name:
- 1,3-Bis[4-(2-methoxyethyl)phenoxy]-
- CAS:
- 230975-30-1
- MF:
- C21H28O5
- Structure:
- Chemical Name:
- 5-Deshydroxymethyl-5-chloro Losartan (Losartan Impurity K)
- CAS:
- 1159977-26-0
- MF:
- C21H20Cl2N6
- Structure:
- Chemical Name:
- D-erythro-3,4-Dihydroxyphenylserine
- CAS:
- 51829-98-2
- MF:
- C9H11NO5
- Structure:
- Chemical Name:
- aztreonam
- CAS:
- 80951-91-3
- MF:
- C13H17N5O8S2
- Structure:
- Chemical Name:
- 5H-[1]Benzopyrano[2,3-b]pyridine,7-ethyl-(9CI)
- CAS:
- 639857-68-4
- MF:
- C14H13NO
- Structure:
- Chemical Name:
- [1,1-Biphenyl]-2,2,4,4,5,5-hexol(9CI)
- CAS:
- 76625-61-1
- MF:
- C12H10O6
- Structure:
- Chemical Name:
- lamivudine sulfoxide
- CAS:
- 160552-55-6
- MF:
- C8H11N3O4S
- Structure:
- Chemical Name:
- Vitamin B12 e-Monocarboxylic Acid
- CAS:
- 26264-28-8
- MF:
- C63H87CoN13O15P
- Structure:
- Chemical Name:
- caffeidine
- CAS:
- 20041-90-1
- MF:
- C7H12N4O
- Chemical Name:
- metreleptin
- CAS:
- 186018-45-1
- Structure:
- Chemical Name:
- 3,5-DIIODO-4'-(4-HYDROXYPHENOXY)BENZOIC ACID
- CAS:
- 2055-97-2
- MF:
- C13H6I4O4
- Structure:
- Chemical Name:
- Sotalol EP Impurity A
- CAS:
- 16974-42-8
- MF:
- C12H20N2O2S
- Structure:
- Chemical Name:
- digoxigenin-mono(digitoxoside)
- CAS:
- 5352-63-6
- MF:
- C29H44O8
- Structure:
- Chemical Name:
- W 36017
- CAS:
- 21236-54-4
- MF:
- C12H18N2O
- Structure:
- Chemical Name:
- ONO EI-601
- CAS:
- 155023-59-9
- MF:
- C15H14N2O6S
- Structure:
- Chemical Name:
- norchlorpromazine
- CAS:
- 1225-64-5
- MF:
- C16H17ClN2S
- Structure:
- Chemical Name:
- ETHYLISOPROPYLNITROSAMINE
- CAS:
- 16339-04-1
- MF:
- C5H12N2O
- Structure:
- Chemical Name:
- 1,3,5,7-Tetrmethyl-adamantane
- CAS:
- 1687-36-1
- MF:
- C14H24
- Structure:
- Chemical Name:
- 4-[1-(hydroxyamino)ethylidene]cyclohexa-2,5-dien-1-one
- CAS:
- 34523-34-7
- MF:
- C8H9NO2
- Structure:
- Chemical Name:
- Methyl 4-(4'-fluorophenyl)-2-(cyclopropyl)-3-quinolinecarboxylate
- CAS:
- 121659-86-7
- MF:
- C20H16FNO2
- Structure:
- Chemical Name:
- Silodosin
- CAS:
- 160970-64-9
- MF:
- C25H32F3N3O4
- Structure:
- Chemical Name:
- 4-Nitrofluorobenzol
- CAS:
- 352-15-8
- MF:
- C6H4FNO
- Structure:
- Chemical Name:
- propyl[2,6'-bi-1H-benzimidazol]-1'-yl]methyl]-
- CAS:
- 144702-27-2
- MF:
- C33H29N5
- Structure:
- Chemical Name:
- 4-(2-Hydroxy-3-isopropylaminopropoxy)benzoic Acid
- CAS:
- 72570-70-8
- MF:
- C13H19NO4
- Structure:
- Chemical Name:
- Fluvoxamino Acid
- CAS:
- 192876-02-1
- MF:
- C14H19F3N2O2
- Structure:
- Chemical Name:
- Desfluoro Fluvoxamine
- CAS:
- 1217214-94-2
- MF:
- C15H22F2N2O2
- Structure:
- Chemical Name:
- Nilotinib N-Oxide
- CAS:
- 1246817-85-5
- MF:
- C28H22F3N7O2
- Structure:
- Chemical Name:
- Bis[(2-guanidino-4-thiazolyl)methyl]disulfide
- CAS:
- 129083-44-9
- MF:
- C10H14N8S4
- Structure:
- Chemical Name:
- 3-AMino-4-(2-chlorophenyl)-6-nitro-2(1H)-quinolinone
- CAS:
- 55198-89-5
- MF:
- C15H10ClN3O3
- Structure:
- Chemical Name:
- 3-Dehydroxy-3-oxo-4,5-dihydro OxazepaM
- CAS:
- 19554-95-1
- MF:
- C15H11ClN2O2
- Structure:
- Chemical Name:
- 8-DeMethyl Ivabradine
- CAS:
- 304464-97-9
- MF:
- C26H34N2O5
- Structure:
- Chemical Name:
- CitalopraM DiMethylaMinobutanone
- CAS:
- 1329745-98-3
- MF:
- C25H33FN2O2
- Structure:
- Chemical Name:
- DesMethyl Erlotinib Carboxylate Acid
- CAS:
- 882172-60-3
- MF:
- C21H19N3O5
- Structure:
- Chemical Name:
- [[4-[(3-Methylphenyl)aMino]-3-pyridinyl]sulfonyl]carbaMic Acid Ethyl Ester
- CAS:
- 72810-57-2
- MF:
- C15H17N3O4S
- Structure:
- Chemical Name:
- 12-Hydroxy Irinotecan
- CAS:
- 185336-12-3
- MF:
- C33H38N4O7
- Structure:
- Chemical Name:
- Losartan IsoMer IMpurity, PotassiuM Salt
- CAS:
- 860644-28-6
- MF:
- C22H22ClKN6O
- Structure:
- Chemical Name:
- PidotiMod Diketopiperazine-6-propanoic Acid
- CAS:
- 161771-75-1
- MF:
- C9H12N2O4S
- Structure:
- Chemical Name:
- RofluMilast N-Oxide
- CAS:
- 292135-78-5
- MF:
- C17H14Cl2F2N2O4
- Structure:
- Chemical Name:
- (3S)-6,6-DIBROMO-2,2-DIMETHYLPENAM-3-CARBOXYLIC ACID 1,1-DIOXIDE
- CAS:
- 76646-91-8
- MF:
- C8H9Br2NO5S
- Structure:
- Chemical Name:
- (S)-Citalopram N-Oxide
- CAS:
- 917482-45-2
- MF:
- C20H21FN2O2
- Structure:
- Chemical Name:
- 7-Epi-docetaxel (Docetaxel Impurity C)
- CAS:
- 153381-68-1
- MF:
- C43H53NO14
- Structure:
- Chemical Name:
- Amido Methyl Meloxicam (Meloxicam Impurity)
- CAS:
- 892395-41-4
- MF:
- C15H15N3O4S2
- Structure:
- Chemical Name:
- DESETHYLENE CIPROFLOXACIN
- CAS:
- 103222-12-4
- MF:
- C15H16FN3O3
- Structure:
- Chemical Name:
- 2-aminobutanenitrile
- CAS:
- 40651-89-6
- MF:
- C4H8N2
- Structure:
- Chemical Name:
- N-[(1R,3r,5S)-9-azabicyclo[3.3.1]non-3-yl]-1-Methyl-1H-indazole-3-carboxaMide hydrochloride
- CAS:
- 141136-01-8
- MF:
- C17H23ClN4O
- Structure:
- Chemical Name:
- BIRG 616 BS
- CAS:
- 287980-84-1
- MF:
- C12H10N4O
- Chemical Name:
- AzithroMycin IMpurity J
- Structure:
- Chemical Name:
- EsMolol Acid SodiuM Salt
- CAS:
- 83356-60-9
- MF:
- C15H22NNaO4
- Structure:
- Chemical Name:
- Thyroxine Ethyl Ester
- CAS:
- 76353-71-4
- MF:
- C17H15I4NO4
- Structure:
- Chemical Name:
- (4-Chlorophenyl)[4-(1-Methylethoxy)phenyl]Methanone (Fenofibrate IMpurity)
- CAS:
- 154356-96-4
- MF:
- C16H15ClO2
- Structure:
- Chemical Name:
- 5-Acetyl Rhein
- CAS:
- 875535-35-6
- MF:
- C17H10O7
- Structure:
- Chemical Name:
- 7'-Methyl-2'-propyl-1H,3'H-2,5'-bibenzo[d]iMidazole
- CAS:
- 884330-09-0
- MF:
- C18H18N4
- Structure:
- Chemical Name:
- 5-Des[2-(tert-butylaMino)] BaMbuterol-5-ethanol
- CAS:
- 112935-93-0
- MF:
- C14H20N2O5
- Structure:
- Chemical Name:
- Deoxy Fesoterodine
- CAS:
- 895137-81-2
- MF:
- C26H37NO2
- Structure:
- Chemical Name:
- Bisacodyl Related Compound C (20 mg) (4-[(4-Hydroxyphenyl)(pyridin-2-yl)methyl]phenyl acetate)
- CAS:
- 72901-16-7
- MF:
- C20H17NO3
- Structure:
- Chemical Name:
- (6R,7R)-7-((Z)-2-(2-aMinothiazol-4-yl)-2-(hydroxyiMino)acetaMido)-8-oxo-3-vinyl-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylic acid 5-oxide
- CAS:
- 934986-48-8
- MF:
- C14H13N5O6S2
- Structure:
- Chemical Name:
- (2S)-1-[(2S)-2-Methyl-3-Methylsulfinylpropanoyl]pyrrolidine-2-carboxylic acid
- CAS:
- 78636-31-4
- MF:
- C14H22N2O6S2
- Chemical Name:
- penilloic acids of piperacillin
- Structure:
- Chemical Name:
- 2-PyrazinecarboxaMide, 6-nitro-3,4-dihydro-3-oxo-
- CAS:
- 259793-97-0
- MF:
- C5H4N4O4
- Structure:
- Chemical Name:
- Methyl 3-aMino-2-((2'-carbaMoylbiphenyl-4-yl)MethylaMino)benzoate
- CAS:
- 147404-75-9
- MF:
- C22H21N3O3
- Structure:
- Chemical Name:
- 3-Methyl cefdinir
- CAS:
- 71091-93-5
- MF:
- C13H13N5O5S2
- Structure:
- Chemical Name:
- 2-[[[4-(2,2,2-Trifluoroethoxy)-3-Methyl-1-oxopyridin-2-yl]Methyl]sulfanyl]-1H-benziMidazole
- CAS:
- 163119-30-0
- MF:
- C16H14F3N3O2S
- Structure:
- Chemical Name:
- (11β,16β)-9-BroMo-11-hydroxy-16-Methyl-17,21-bis(1-oxopropoxy)pregna-1,4-diene-3,20-dione
- CAS:
- 52092-14-5
- MF:
- C28H37BrO7
- 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:
- 24R-Calcipotriol
- CAS:
- 112827-99-3
- MF:
- C27H40O3
- Chemical Name:
- Methotrexate IMpurity C
- Structure:
- Chemical Name:
- Paroxetine EP IMpurity G
- CAS:
- 69675-10-1
- MF:
- C12H14FN
- Chemical Name:
- Itraconazole impurity C
- 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:
- 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:
- 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:
- 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