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Pharmaceutical Impurity Reference Standards
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- Structure:
- Chemical Name:1-Isobutyl-4-piperidone
- CAS:72544-16-2
- MF:C9H17NO
- Structure:
- Chemical Name:Fluphenazine decanoate
- CAS:5002-47-1
- MF:C32H44F3N3O2S
- Structure:
- Chemical Name:Formoterol fumarate dihydrate
- CAS:183814-30-4
- MF:C23H28N2O8
- Structure:
- Chemical Name:DOTHIEPIN HCL
- CAS:897-15-4
- MF:C19H22ClNS
- Structure:
- Chemical Name:4-(4-Chloro-benzyl)-2H-phthalazin-1-one
- CAS:53242-88-9
- MF:C15H11ClN2O
- Structure:
- Chemical Name:BENZATHINE PENICILLINE G TETRAHYDRATE
- CAS:41372-02-5
- MF:C32H38N4O4S
- Structure:
- Chemical Name:Chloramphenicol sodium succinate
- CAS:982-57-0
- MF:C15H15Cl2N2O8.Na
- Structure:
- Chemical Name:GUANERAN
- CAS:5581-52-2
- MF:C9H8N8O2S
- Structure:
- Chemical Name:2,6-DIMETHYL-4-NITROSOPHENOL
- CAS:14818-35-0
- MF:C12H16O2
- Structure:
- Chemical Name:Milbemycin oxime
- CAS:129496-10-2
- MF:2C32H45NO7.2C31H43NO7
- Structure:
- Chemical Name:ALPRENOLOL HYDROCHLORIDE
- CAS:13707-88-5
- MF:C15H24ClNO2
- Structure:
- Chemical Name:4-BUTYL-4-[HYDROXYMETHYL]-1,2-DIPHENYL-3,5-PYRAZOLIDINEDIONE HYDROGEN SUCCINATE [ESTER]
- CAS:27470-51-5
- MF:C24H26N2O6
- Chemical Name:ENTEROKINASE
- CAS:9014-74-8
- MF:NULL
- Chemical Name:CHONDROITIN SULFATE B SODIUM SALT
- CAS:54328-33-5
- MF:NULL
- Structure:
- Chemical Name:Piretanide
- CAS:55837-27-9
- MF:C17H18N2O5S
- Structure:
- Chemical Name:Potassium trichloroammineplatinate (II)
- CAS:13820-91-2
- MF:Cl3H3KNPt
- Structure:
- Chemical Name:Calcium levulinate dihydrate
- CAS:5743-49-7
- MF:C10H18CaO8
- Structure:
- Chemical Name:alpha-Ethyl-2-oxo-1-pyrrolidineacetic acid
- CAS:67118-31-4
- MF:C8H13NO3
- Structure:
- Chemical Name:Rilmenidine phosphate
- CAS:85409-38-7
- MF:C10H19N2O5P
- Structure:
- Chemical Name:Disodium clodronate tetrahydrate
- CAS:88416-50-6
- MF:CH7Cl2NaO7P2
- Structure:
- Chemical Name:Framycetin sulphate
- CAS:4146-30-9
- MF:C23H48N6O17S
- Chemical Name:MOLGRASTIM
- CAS:99283-10-0
- MF:
- Structure:
- Chemical Name:2-(4-Methoxybenzylamino)pyridine
- CAS:52818-63-0
- MF:C13H14N2O
- Structure:
- Chemical Name:3-METHOXY-DL-TYROSINE
- CAS:7636-26-2
- MF:C10H13NO4
- Structure:
- Chemical Name:4-(DIPHENYLMETHOXY)PIPERIDINE
- CAS:58258-01-8
- MF:C18H21NO
- Structure:
- Chemical Name:N,N'-Dipropylurea
- CAS:623-95-0
- MF:C7H16N2O
- Structure:
- Chemical Name:ISOPRENALINE SULFATE
- CAS:6700-39-6
- MF:2C11H17NO3.2H2O.H2O4S
- Structure:
- Chemical Name:Spectinomycin sulfate tetrahydrate
- CAS:64058-48-6
- MF:C14H26N2O11S
- Structure:
- Chemical Name:ACETYLSALICYLSALICYLIC ACID
- CAS:530-75-6
- MF:C16H12O6
- Structure:
- Chemical Name:DIHYDROERGOCRISTINE MESYLATE
- CAS:24730-10-7
- MF:C36H45N5O8S
- Structure:
- Chemical Name:1-Cyanocyclohexaneacetic acid
- CAS:133481-09-1
- MF:C9H13NO2
- Structure:
- Chemical Name:2,4-DIAMINO-6-DIMETHYLAMINO-1,3,5-TRIAZINE
- CAS:1985-46-2
- MF:C5H10N6
- Structure:
- Chemical Name:CAPTOPRIL DISULFIDE
- CAS:64806-05-9
- MF:C18H28N2O6S2
- Structure:
- Chemical Name:2-BENZYL-1,2,3,6,7,11B-HEXAHYDRO-4H-PYRAZION[2,1-A] ISOQUINOLINE-4-ONE
- CAS:54761-87-4
- MF:C19H18N2O2
- Structure:
- Chemical Name:(+/-)-tert-Butyl 6-Chloro-5-hydroxy-3-oxohexanoate
- CAS:319924-73-7
- MF:C10H17ClO4
- Structure:
- Chemical Name:(R)-2-(2-aminothiazol-4-yl)-N-(2-(2-((2-hydroxy-2-phenylethyl)amino)ethyl)phenyl)acetamide
- CAS:1684452-80-9
- MF:C21H24N4O2S
- Structure:
- Chemical Name:1,4-Dihydro-2,6-dimethyl-4-(3-nitrophenyl)-3,5-pyridinedicarboxylic Acid 3-[2-[(3,3-Diphenylpropyl)methylamino]-1,1-dimethylethyl] 5-ethyl Ester Hydrochloride
- CAS:210579-71-8
- MF:C37H44ClN3O6
- Structure:
- Chemical Name:2-chloro-5-(2-fluorophenyl)-1H-pyrrole-3-carbaldehyde
- CAS:2169267-53-0
- MF:C11H7ClFNO
- Structure:
- Chemical Name:4-(4-(4-(4-(((3S,5S)-5-((1H-1,2,4-triazol-1-yl)methyl)-5-(2,4-difluorophenyl)tetrahydrofuran-3-yl)methoxy)phenyl)piperazin-1-yl)phenyl)-1-((2R,3S)-2-hydroxypentan-3-yl)-1H-1,2,4-triazol-5(4H)-one
- CAS:2243785-99-9
- MF:C37H42F2N8O4
- Structure:
- Chemical Name:5-(2-fluorophenyl)-N-methyl-1-(pyridin-3-ylsulfonyl)-1H-pyrrole-3-carboxamide
- CAS:2054536-04-6
- MF:C17H14FN3O3S
- Chemical Name:Ozagrel Impurity 10
- CAS:
- MF:
- Structure:
- Chemical Name:tris((5-(2-fluorophenyl)-1H-pyrrol-3-yl)methyl)amine
- CAS:
- MF:C33H27F3N4
- Chemical Name:Esmolol impurity C
- CAS:
- MF:
- Structure:
- Chemical Name:OXELADIN CITRATE
- CAS:52432-72-1
- MF:C20H33NO3.C6H8O7
- Structure:
- Chemical Name:3,4-Dihydro-7-(4-chlorobutoxy)-2(1H)-quinolinone
- CAS:120004-79-7
- MF:C13H16ClNO2
- Chemical Name:Sugammadex sodium Impurity 46
- CAS:
- MF:
- Chemical Name:Tenofovir Impurity 103
- CAS:
- MF:
- Chemical Name:Cabozantinib impurity 44
- CAS:
- MF:
- Chemical Name:Cabozantinib impurity 40
- CAS:
- MF:
- Chemical Name:Cabozantinib impurity 74
- CAS:
- MF:
- Chemical Name:5-hydroxy-N,1,2-trimethyl-1H-indole-3-carboxamide
- CAS:
- MF:
- Chemical Name:Doxofylline Impurity 25
- CAS:
- MF:
- Chemical Name:Dapoxetine impurity 62
- CAS:
- MF:
- Chemical Name:Dapoxetine impurity 56
- CAS:
- MF:
- Chemical Name:Ipragliflozin Impurity 6
- CAS:
- MF:
- Structure:
- Chemical Name:Ibrutinib Impurity 27
- CAS:2031255-26-0
- MF:C26H28N6O3
- Structure:
- Chemical Name:Clopidogrel Impurity 59
- CAS:1122047-98-6
- MF:C25H26ClNO6S
- Chemical Name:Ozagrel Impurity B
- CAS:
- MF:
- Chemical Name:Ceftriaxone Sodium impurity F
- CAS:
- MF:
- Structure:
- Chemical Name:(R)-5-(2-fluoro-3-methoxyphenyl)-1-(2-fluoro-6-(trifluoromethyl)benzyl)-6-methyl-3-(2-(2-oxopyrrolidin-1-yl)-2-phenylethyl)pyrimidine-2,4(1H,3H)-dione
- CAS:2248628-93-3
- MF:C32H28F5N3O4
- Structure:
- Chemical Name:Famotidine EP Impurity I HCl
- CAS:
- MF:C8H15N7O2S3
- Structure:
- Chemical Name:Tizanidine EP Impurity C
- CAS:1147548-83-1
- MF:C16H14Cl2N10S2
- Chemical Name:nicergoline impurity Q
- CAS:
- MF:
- Structure:
- Chemical Name:Loratadine Impurity 19
- CAS:79779-58-1
- MF:C22H24N2O2
- Structure:
- Chemical Name:(Z)-2-chloro-3-hydroxyacrylaldehyde
- CAS:50704-42-2
- MF:C3H3ClO2
- Chemical Name:Ticagrelor Related Compound 39
- CAS:
- MF:
- Chemical Name:Erlotinib Impurity 32
- CAS:
- MF:
- Chemical Name:Pramipexole Impurity 36
- CAS:
- MF:
- Chemical Name:Teneligliptin Impurity 3
- CAS:
- MF:
- Chemical Name:Erlotinib Hydrochloride iMpurity 52
- CAS:
- MF:
- Structure:
- Chemical Name:Ornidazole Impurity J
- CAS:742020-47-9
- MF:C7H12N4O3
- Structure:
- Chemical Name:Daidzein-4′-glucoside
- CAS:58970-69-7
- MF:C21H20O9
- Chemical Name:Aprepitant iMpurity 45
- CAS:
- MF:
- Structure:
- Chemical Name:Afatinib Impurity 75
- CAS:2348580-72-1
- MF:C7H14N2O
- Structure:
- Chemical Name:Androstan-17-one,2,3-epoxy-16-(1-pyrrolidinyl)
- CAS:159325-45-8
- MF:C23H35NO2
- Structure:
- Chemical Name:(2b,3a,16b,17b)-2,16-Bispiperidino-3,17-diacetoxy-5-androstane
- CAS:13529-31-2
- MF:C33H54N2O4
- Structure:
- Chemical Name:Palbociclib Impurity 59
- CAS:1430196-98-7
- MF:C14H20N4O4
- Chemical Name:Landiolol impurity Z
- CAS:
- MF:
- Structure:
- Chemical Name:Vitamin K1 Impurity 1
- CAS:19274-66-9
- MF:C31H46O2
- Chemical Name:Teneligliptin Impurity 13
- CAS:
- MF:
- Structure:
- Chemical Name:Ceftazidime EP Impurity D
- CAS:73547-69-0
- MF:C45H44N6O7S2
- Structure:
- Chemical Name:2H-3-Benzazepin-2-one, 3-[3-[[[(7S)-3,4-dimethoxybicyclo[4.2.0]octa-1,3,5-trien-7-yl]methyl]methylamino]propyl]-1,3,4,5-tetrahydro-5-hydroxy-7,8-dimethoxy-
- CAS:2253977-80-7
- MF:C27H36N2O6
- Structure:
- Chemical Name:Benzeneacetic acid, 3-[1-hydroxy-4-[4-(hydroxydiphenylmethyl)-1-piperidinyl]butyl]-α,α-dimethyl-, methyl ester
- CAS:1187954-56-8
- MF:C33H41NO4
- Structure:
- Chemical Name:N-[2-(methylthio)ethyl]-2-[(3,3,3-trifluoropropyl)thio]-Adenosine 5''-(hydrogen P-1H-imidazol-1-ylphosphonate)
- CAS:1054332-15-8
- MF:C19H25F3N7O6PS2
- Structure:
- Chemical Name:N-[5-(4-Bromophenyl)-6-[2-(2-pyrimidinyloxy)ethoxy]-4-pyrimidinyl]-N''-propyl-sulfamide
- CAS:2211059-00-4
- MF:C19H21BrN6O4S
- Chemical Name:Isomer 1 of Tazobactam Impurity 3
- CAS:
- MF:
- Chemical Name:Ceftiofur USP Impurity I
- CAS:
- MF:
- Chemical Name:Cephalexin Degradation Impurity A
- CAS:
- MF:
- Chemical Name:Azlocillin Impurity 8
- CAS:
- MF:
- Chemical Name:Pregabalin-8687（mixture of 4 isomers）
- CAS:
- MF:
- Chemical Name:7-(2-chloropropanoyl)-5H-chromeno[2,3-b]pyridin-5-one
- CAS:
- MF:
- Chemical Name:1-(5H-chromeno[2,3-b]pyridin-7-yl)-2-methoxypropan-1-one
- CAS:
- MF:
- Structure:
- Chemical Name:Dolutegravir Impurity C
- CAS:1802141-49-6
- MF:C22H23F2N3O5
- Structure:
- Chemical Name:Adefovir Dipivoxil Impurity 24
- CAS:116384-58-8
- MF:C14H23O7PS
- Structure:
- Chemical Name:Dapoxetine Impurity 68
- CAS:119357-48-1
- MF:C19H18O
- Structure:
- Chemical Name:Tobramycin Impurity
- CAS:74501-86-3
- MF:C18H35N5O8
- Chemical Name:Peramivir Impurity 24
- CAS:
- MF:
- Structure:
- Chemical Name:2-CHLORO-6-AMINO-9-(2',3',5'-TRI-O-ACETYL--D-RIBOFURANOSYL)PURINE
- CAS:79999-39-6
- MF:C16H18ClN5O7