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Pharmaceutical Impurity Reference Standards
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- Structure:
- Chemical Name:
- 4-Difluoromethoxy-2-nitro-aniline
- CAS:
- 97963-76-3
- MF:
- C7H6F2N2O3
- Structure:
- Chemical Name:
- rac Des(isopropylaMino) Acebutolol Diol
- CAS:
- 96480-91-0
- MF:
- C15H21NO5
- Structure:
- Chemical Name:
- (17α)-17-Hydroxy-3-oxo-19-norpregna-5(10),9(11)-diene-21-nitrile
- CAS:
- 106111-42-6
- MF:
- C20H25NO2
- Structure:
- Chemical Name:
- (3S)-N-[[(1S)-1,2,3,4-Tetrahydro-1-naphthalenyl]Methyl]-1-azabicyclo[2.2.2]octan-3-aMine
- CAS:
- 177793-80-5
- MF:
- C18H26N2
- Structure:
- Chemical Name:
- 4-(4-Fluorophenyl)-1-Methyl-
- CAS:
- 1012886-75-7
- MF:
- C12H15ClFN
- Structure:
- Chemical Name:
- 5'(S)-Hydroxy SiMvastatin DISCONTINUED
- CAS:
- 149949-05-3
- MF:
- C25H38O6
- Structure:
- Chemical Name:
- 5'-Epi-LaMivudine
- CAS:
- 136846-20-3
- MF:
- C8H11N3O3S
- Structure:
- Chemical Name:
- N-ForMyl-D-ribofuranosyl-3-guanylurea (α/β-Mixture)
- CAS:
- 686299-20-7
- MF:
- C8H14N4O6
- Structure:
- Chemical Name:
- SiMvastatin 4'-Methyl Ether
- CAS:
- 864357-88-0
- MF:
- C26H40O5
- Structure:
- Chemical Name:
- (2S,3S,5S)-5-(tert-Butoxycarbonylamino)-2-(N-5-thiazolylmethoxycarbonyl)amino-1,6-diphenyl-3-hydroxyhexane
- CAS:
- 162849-95-8
- MF:
- C28H35N3O5S
- Structure:
- Chemical Name:
- 1-[3-(Benzoyloxy)propyl]-2,3-dihydro-5-[(2R)-2-[[2-[2-(2,2,2-trifluoroethoxy)phenoxy]ethyl]amino]propyl]-1H-indole-7-carbonitrile
- CAS:
- 885340-11-4
- MF:
- C32H34F3N3O4
- Structure:
- Chemical Name:
- 4-DesMethoxy-4-broMo TriMethopriM
- CAS:
- 16285-82-8
- MF:
- C13H15BrN4O2
- Structure:
- Chemical Name:
- Diaquo[(1R,2R)-1,2-cyclohexanediaMine]platinuM DiMer Dinitrate
- CAS:
- 82398-34-3
- MF:
- C12H24N5O5Pt2+
- Structure:
- Chemical Name:
- 2-Hexenoic acid, 2-cyano-5-methyl-
- CAS:
- 869-02-3
- MF:
- C8H11NO2
- Structure:
- Chemical Name:
- CP-690550A
- CAS:
- 1243290-37-0
- MF:
- C15H21N5O2
- Structure:
- Chemical Name:
- (S)-Tomoxetine
- CAS:
- 105314-53-2
- MF:
- C17H21NO
- Structure:
- Chemical Name:
- Fexofenadine EP Impurity F
- CAS:
- 185066-33-5
- MF:
- C31H37NO4
- Structure:
- Chemical Name:
- (E)-2-(7-methoxy-3,4-dihydronaphthalen-1(2H)-ylidene)ethan-1-amine
- CAS:
- 468104-18-9
- MF:
- C13H17NO
- Structure:
- Chemical Name:
- 4-(5-(pyridin-4-yl)-1H-1,2,4-triazol-3-yl)picolinamide
- CAS:
- 1992028-94-0
- MF:
- C13H10N6O
- Structure:
- Chemical Name:
- Indacaterol Impurity 22
- CAS:
- 773895-24-2
- MF:
- C31H34N2O3
- Structure:
- Chemical Name:
- 10-O-2,2-Dichloroethoxycarbonyl Docetaxe
- CAS:
- 158810-73-2
- MF:
- C46H55Cl2NO16
- Structure:
- Chemical Name:
- 4R,5S)-2,4-diphenyl-4,5-dihydrooxazole-5-carboxylic acid
- CAS:
- 849831-77-2
- MF:
- C16H13NO3
- Structure:
- Chemical Name:
- PDXA-226
- CAS:
- 352637-51-5
- MF:
- C14H14N2O
- Structure:
- Chemical Name:
- Ropivacaine-ET-R
- CAS:
- 98626-60-9
- MF:
- C16H24N2O
- Structure:
- Chemical Name:
- Ropivacaine-iPr-S
- CAS:
- 265120-58-9
- MF:
- C17H26N2O
- Structure:
- Chemical Name:
- (S)-N,N-dimethyl-3-(naphthalen-1-yloxy)-3-(thiophen-3-yl)propan-1-amine
- CAS:
- 1384080-33-4
- MF:
- C19H21NOS
- Structure:
- Chemical Name:
- methyl 4-(5-methyl-3-phenylisoxazol-4-yl)benzenesulfonate
- MF:
- C17H15NO4S
- Chemical Name:
- Apremilast impurity 15
- Structure:
- Chemical Name:
- Aprepitant Impurity 22
- CAS:
- 934540-48-4
- MF:
- C20H16F7NO2
- Structure:
- Chemical Name:
- Aprepitant Impurity 9
- CAS:
- 219821-37-1
- MF:
- C24H25F7N4O4
- Structure:
- Chemical Name:
- Betamethasone EP Impurity I
- CAS:
- 185613-69-8
- MF:
- C22H29FO5
- Structure:
- Chemical Name:
- Canagliflozin Impurity 14
- CAS:
- 842133-17-9
- MF:
- C24H25FO5S
- Chemical Name:
- Carfilzomib Impurity F
- Structure:
- Chemical Name:
- Cefamandole Impurity A
- CAS:
- 1947364-12-6
- MF:
- C17H16N2O6S
- Structure:
- Chemical Name:
- Dapagliflozin Impurity 19
- CAS:
- 1469910-84-6
- MF:
- C29H33ClO10
- Chemical Name:
- Docetaxel EP Impurity A
- Chemical Name:
- Empagliflozin Impurity 21
- Chemical Name:
- Febuxostat Impurity 43
- Chemical Name:
- Formoterol Impurity 20
- Chemical Name:
- Hydroxychloroquine Impurity 2
- Structure:
- Chemical Name:
- Ibrutinib Impurity 14
- CAS:
- 2417548-76-4
- MF:
- C50H48N12O4
- Chemical Name:
- Imatinib impurity 11
- Structure:
- Chemical Name:
- Isavuconazole Impurity 2
- CAS:
- 2001051-99-4
- MF:
- C13H12F2N4O
- Chemical Name:
- Isavuconazole Impurity 25
- Structure:
- Chemical Name:
- Loxoprofen Impurity 18
- CAS:
- 99807-54-2
- MF:
- C11H13BrO2
- Structure:
- Chemical Name:
- Mupirocin EP Impurity D
- CAS:
- 71087-97-3
- MF:
- C26H44O9
- Chemical Name:
- Olaparib Impurity 3
- Structure:
- Chemical Name:
- Posaconazole Impurity 33
- CAS:
- 182210-71-5
- MF:
- C12H13F2IO2
- Chemical Name:
- Posaconazole Impurity 38
- Chemical Name:
- Posaconazole Impurity 62
- Chemical Name:
- Roxithromycin Impurity J
- Structure:
- Chemical Name:
- Sitagliptin Impurity 21
- CAS:
- 2088771-60-0
- MF:
- C20H19F6N5O5
- Chemical Name:
- SofosBuvir Impurity 38
- Chemical Name:
- SofosBuvir Impurity 61
- Structure:
- Chemical Name:
- 1,3-bis(2-chloroethyl)benzimidazolin-2-one
- CAS:
- 55470-74-1
- MF:
- C11H12Cl2N2O
- Chemical Name:
- Nintedanib Impurity A (Intedanib Impurity A ）
- Chemical Name:
- Tigecycline Impurity 6
- Structure:
- Chemical Name:
- Febuxostat Bromo Impurity
- CAS:
- 144060-40-2
- MF:
- C15H16BrNO3S
- Structure:
- Chemical Name:
- Meptazinol Impurity
- CAS:
- 1314003-47-8
- MF:
- C23H28N2O4
- Structure:
- Chemical Name:
- 1'H-2,3'-bipyridinyl-2'-one
- CAS:
- 101002-01-1
- MF:
- C10H8N2O
- Chemical Name:
- Brexpiprazole Impurity D
- Chemical Name:
- Brivaracetam Impurity E
- Chemical Name:
- Dapoxetine Impurity 8
- Structure:
- Chemical Name:
- Irbesartan Impurity 6
- MF:
- C25H28N6O
- Chemical Name:
- Empagliflozin impurity B
- Chemical Name:
- Varenicline Impurity 1
- Chemical Name:
- Voriconazole Impurity 6
- Chemical Name:
- Caspofungin impurity 1
- Chemical Name:
- Cabozantinib impurity D
- Chemical Name:
- Neratinib Impurity 3
- Structure:
- Chemical Name:
- Ranitidine Impurity D
- MF:
- C13H22N4O3S
- Structure:
- Chemical Name:
- Metoprolol IMpurity 5
- MF:
- C15H25NO3
- Chemical Name:
- Mirabegron Impurity 2
- Structure:
- Chemical Name:
- Pemetrexed Impurity 1
- CAS:
- 1644287-26-2
- MF:
- C20H21N5O8
- Chemical Name:
- Plerixafor Impurity B
- Chemical Name:
- Tolvaptan impurity3
- Chemical Name:
- Vonoprazan Impurity 7
- Chemical Name:
- Cefazolin impurity F
- Structure:
- Chemical Name:
- Apremilast Impurity 3
- CAS:
- 88687-92-7
- MF:
- C16H10N2O8
- Structure:
- Chemical Name:
- Apixaban Impurity 8
- CAS:
- 1777781-49-3
- MF:
- C24H23N5O4
- Chemical Name:
- Ritodrine BP Impurity D
- Chemical Name:
- Rivaroxaban Impurity 19
- Structure:
- Chemical Name:
- Topiroxostat Impurity 4
- CAS:
- 1379342-46-7
- MF:
- C8H8N2O3
- Chemical Name:
- Ertapenem impurity 1
- Structure:
- Chemical Name:
- (R)-2-(3-(diisopropylamino)-1-phenylpropyl)-4-(hydroxymethyl)phenyl methacrylate
- MF:
- C26H36NO3
- Chemical Name:
- Flomoxef Impurity 3
- Structure:
- Chemical Name:
- Ropivacaine impurity
- CAS:
- 1105704-96-8
- MF:
- C12H14N2O3
- Structure:
- Chemical Name:
- Agomelatine Impurity 1
- CAS:
- 1352139-51-5
- MF:
- C15H19NO2
- Structure:
- Chemical Name:
- Diquafosol Impurity 1
- CAS:
- 26184-65-6
- MF:
- C18H24N4O17P2
- Structure:
- Chemical Name:
- Milnacipran Impurity 3
- CAS:
- 1353644-50-4
- MF:
- C15H20ClNO
- Structure:
- Chemical Name:
- L-Glutamic acid 1-ethyl ester
- CAS:
- 52454-78-1
- MF:
- C7H13NO4
- Structure:
- Chemical Name:
- Suvorexant Impurity 2
- CAS:
- 1276666-19-3
- MF:
- C23H23ClN6O2
- Chemical Name:
- Tenofovir impurity L
- Structure:
- Chemical Name:
- Ticagrelor Impurity 27
- CAS:
- 1402150-01-9
- MF:
- C19H26ClN5O5S
- Chemical Name:
- Ticagrelor impurity P
- Structure:
- Chemical Name:
- Tramadol Impurity 1
- CAS:
- 66170-32-9
- MF:
- C16H25NO2
- Structure:
- Chemical Name:
- Lidocaine EP Impurity G
- CAS:
- 42459-30-3
- MF:
- C13H20N2O
- Structure:
- Chemical Name:
- methyl 1,4-dihydroxy-7-phenoxyisoquinoline-3-carboxylate
- CAS:
- 1421312-32-4
- MF:
- C17H13NO5
- Structure:
- Chemical Name:
- 1-(2,3-DIMETHYLPHENYL)PROPAN-1-OL
- CAS:
- 944268-64-8
- MF:
- C11H16O
- Structure:
- Chemical Name:
- 4-(4-chlorophenyl)-5-methyl-3-phenylisoxazole
- CAS:
- 1448355-87-0
- MF:
- C16H12ClNO