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Pharmaceutical Impurity Reference Standards
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- Structure:
- Chemical Name:
- Clopamide
- CAS:
- 636-54-4
- MF:
- C14H20ClN3O3S
- Structure:
- Chemical Name:
- 1-Isobutyl-4-piperidone
- CAS:
- 72544-16-2
- MF:
- C9H17NO
- Structure:
- Chemical Name:
- Formoterol fumarate dihydrate
- CAS:
- 183814-30-4
- MF:
- C23H28N2O8
- Structure:
- Chemical Name:
- Chloramphenicol sodium succinate
- CAS:
- 982-57-0
- MF:
- C15H15Cl2N2O8.Na
- Structure:
- Chemical Name:
- Fluphenazine decanoate
- CAS:
- 5002-47-1
- MF:
- C32H44F3N3O2S
- Structure:
- Chemical Name:
- GUANERAN
- CAS:
- 5581-52-2
- MF:
- C9H8N8O2S
- Structure:
- Chemical Name:
- BENZATHINE PENICILLINE G TETRAHYDRATE
- CAS:
- 41372-02-5
- MF:
- C32H38N4O4S
- 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:
- 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:
- Rilmenidine phosphate
- CAS:
- 85409-38-7
- MF:
- C10H19N2O5P
- Structure:
- Chemical Name:
- alpha-Ethyl-2-oxo-1-pyrrolidineacetic acid
- CAS:
- 67118-31-4
- MF:
- C8H13NO3
- Structure:
- Chemical Name:
- Piretanide
- CAS:
- 55837-27-9
- MF:
- C17H18N2O5S
- Structure:
- Chemical Name:
- Calcium levulinate dihydrate
- CAS:
- 5743-49-7
- MF:
- C10H18CaO8
- Structure:
- Chemical Name:
- Potassium trichloroammineplatinate (II)
- CAS:
- 13820-91-2
- MF:
- Cl3H3KNPt
- 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
- 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
- Structure:
- Chemical Name:
- tris((5-(2-fluorophenyl)-1H-pyrrol-3-yl)methyl)amine
- MF:
- C33H27F3N4
- 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
- Chemical Name:
- Tenofovir Impurity 103
- Chemical Name:
- Cabozantinib impurity 44
- Chemical Name:
- Cabozantinib impurity 40
- Chemical Name:
- Cabozantinib impurity 74
- Chemical Name:
- 5-hydroxy-N,1,2-trimethyl-1H-indole-3-carboxamide
- Chemical Name:
- Doxofylline Impurity 25
- Chemical Name:
- Dapoxetine impurity 62
- Chemical Name:
- Dapoxetine impurity 56
- Chemical Name:
- Esmolol impurity C
- Chemical Name:
- Ipragliflozin Impurity 6
- 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
- Chemical Name:
- Ceftriaxone Sodium impurity F
- 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
- MF:
- C8H15N7O2S3
- Structure:
- Chemical Name:
- 替扎尼定EP杂质C
- CAS:
- 1147548-83-1
- MF:
- C16H14Cl2N10S2
- Chemical Name:
- nicergoline impurity Q
- 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:
- (trans)-3-((benzo[d][1,3]dioxol-5-yloxy)methyl)-4-(4''-fluoro-[1,1''-biphenyl]-4-yl)-1-methylpiperidine hydrochloride
- Chemical Name:
- Ticagrelor Related Compound 39
- Chemical Name:
- Erlotinib Impurity 32
- Chemical Name:
- Pramipexole Impurity 36
- Chemical Name:
- Teneligliptin Impurity 3
- Chemical Name:
- Erlotinib Hydrochloride iMpurity 52
- 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
- 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
- Structure:
- Chemical Name:
- Vitamin K1 Impurity 1
- CAS:
- 19274-66-9
- MF:
- C31H46O2
- Chemical Name:
- Teneligliptin Impurity 13
- 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
- Chemical Name:
- Ceftiofur USP Impurity I
- Chemical Name:
- Cephalexin Degradation Impurity A
- Chemical Name:
- Azlocillin Impurity 8
- Chemical Name:
- Pregabalin-8687（mixture of 4 isomers）
- Chemical Name:
- 7-(2-chloropropanoyl)-5H-chromeno[2,3-b]pyridin-5-one
- Chemical Name:
- 1-(5H-chromeno[2,3-b]pyridin-7-yl)-2-methoxypropan-1-one
- Chemical Name:
- (E)-4-chloro-6-(3-(2,4-difluorophenyl)-4-(1H-1,2,4-triazol-1-yl)but-3-en-2-yl)-5-fluoropyrimidine
- 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
- Structure:
- Chemical Name:
- 2-CHLORO-6-AMINO-9-(2',3',5'-TRI-O-ACETYL--D-RIBOFURANOSYL)PURINE
- CAS:
- 79999-39-6
- MF:
- C16H18ClN5O7