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Pharmaceutical Impurity Reference Standards

ChemicalBookProduct Catalog Analytical Chemistry Standard Pharmaceutical Impurity Reference Standards
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Structure Chemical Name CAS MF
Diaquo[(1R,2R)-1,2-cyclohexanediaMine]platinuM DiMer Dinitrate Diaquo[(1R,2R)-1,2-cyclohexanediaMine]platinuM DiMer Dinitrate 82398-34-3 C12H24N5O5Pt2+
2-Hexenoic acid, 2-cyano-5-methyl- 2-Hexenoic acid, 2-cyano-5-methyl- 869-02-3 C8H11NO2
CP-690550A CP-690550A 1243290-37-0 C15H21N5O2
(S)-Tomoxetine (S)-Tomoxetine 105314-53-2 C17H21NO
Fexofenadine EP Impurity F Fexofenadine EP Impurity F 185066-33-5 C31H37NO4
(E)-2-(7-methoxy-3,4-dihydronaphthalen-1(2H)-ylidene)ethan-1-amine (E)-2-(7-methoxy-3,4-dihydronaphthalen-1(2H)-ylidene)ethan-1-amine 468104-18-9 C13H17NO
4-(5-(pyridin-4-yl)-1H-1,2,4-triazol-3-yl)picolinamide 4-(5-(pyridin-4-yl)-1H-1,2,4-triazol-3-yl)picolinamide 1992028-94-0 C13H10N6O
Indacaterol Impurity 22 Indacaterol Impurity 22 773895-24-2 C31H34N2O3
10-O-2,2-Dichloroethoxycarbonyl Docetaxe 10-O-2,2-Dichloroethoxycarbonyl Docetaxe 158810-73-2 C46H55Cl2NO16
4R,5S)-2,4-diphenyl-4,5-dihydrooxazole-5-carboxylic acid 4R,5S)-2,4-diphenyl-4,5-dihydrooxazole-5-carboxylic acid 849831-77-2 C16H13NO3
PDXA-226 PDXA-226 352637-51-5 C14H14N2O
Ropivacaine-ET-R Ropivacaine-ET-R 98626-60-9 C16H24N2O
Ropivacaine-iPr-S Ropivacaine-iPr-S 265120-58-9 C17H26N2O
(S)-N,N-dimethyl-3-(naphthalen-1-yloxy)-3-(thiophen-3-yl)propan-1-amine (S)-N,N-dimethyl-3-(naphthalen-1-yloxy)-3-(thiophen-3-yl)propan-1-amine 1384080-33-4 C19H21NOS
methyl 4-(5-methyl-3-phenylisoxazol-4-yl)benzenesulfonate methyl 4-(5-methyl-3-phenylisoxazol-4-yl)benzenesulfonate C17H15NO4S
Apremilast impurity 15 Apremilast impurity 15
Aprepitant Impurity 22 Aprepitant Impurity 22 934540-48-4 C20H16F7NO2
Aprepitant Impurity 9 Aprepitant Impurity 9 219821-37-1 C24H25F7N4O4
1,3-bis(2-chloroethyl)benzimidazolin-2-one 1,3-bis(2-chloroethyl)benzimidazolin-2-one 55470-74-1 C11H12Cl2N2O
Nintedanib Impurity A (Intedanib Impurity A ） Nintedanib Impurity A (Intedanib Impurity A ）
Tigecycline Impurity 6 Tigecycline Impurity 6
Betamethasone EP Impurity I Betamethasone EP Impurity I 185613-69-8 C22H29FO5
Canagliflozin Impurity 14 Canagliflozin Impurity 14 842133-17-9 C24H25FO5S
Carfilzomib Impurity F Carfilzomib Impurity F
Cefamandole Impurity A Cefamandole Impurity A 1947364-12-6 C17H16N2O6S
Dapagliflozin Impurity 19 Dapagliflozin Impurity 19 1469910-84-6 C29H33ClO10
Docetaxel EP Impurity A Docetaxel EP Impurity A
Empagliflozin Impurity 21 Empagliflozin Impurity 21
Febuxostat Impurity 43 Febuxostat Impurity 43
Formoterol Impurity 20 Formoterol Impurity 20
Hydroxychloroquine Impurity 2 Hydroxychloroquine Impurity 2
Ibrutinib Impurity 14 Ibrutinib Impurity 14 2417548-76-4 C50H48N12O4
Imatinib impurity 11 Imatinib impurity 11
Isavuconazole Impurity 2 Isavuconazole Impurity 2 2001051-99-4 C13H12F2N4O
Isavuconazole Impurity 25 Isavuconazole Impurity 25
Loxoprofen Impurity 18 Loxoprofen Impurity 18 99807-54-2 C11H13BrO2
Mupirocin EP Impurity D Mupirocin EP Impurity D 71087-97-3 C26H44O9
Olaparib Impurity 3 Olaparib Impurity 3
Posaconazole Impurity 33 Posaconazole Impurity 33 182210-71-5 C12H13F2IO2
Posaconazole Impurity 38 Posaconazole Impurity 38
Posaconazole Impurity 62 Posaconazole Impurity 62
Roxithromycin Impurity J Roxithromycin Impurity J
Sitagliptin Impurity 21 Sitagliptin Impurity 21 2088771-60-0 C20H19F6N5O5
SofosBuvir Impurity 38 SofosBuvir Impurity 38
SofosBuvir Impurity 61 SofosBuvir Impurity 61
Suvorexant Impurity 2 Suvorexant Impurity 2 1276666-19-3 C23H23ClN6O2
Tenofovir impurity L Tenofovir impurity L
Ticagrelor Impurity 27 Ticagrelor Impurity 27 1402150-01-9 C19H26ClN5O5S
Ticagrelor impurity P Ticagrelor impurity P
Tramadol Impurity 1 Tramadol Impurity 1 66170-32-9 C16H25NO2
Lidocaine EP Impurity G Lidocaine EP Impurity G 42459-30-3 C13H20N2O
methyl 1,4-dihydroxy-7-phenoxyisoquinoline-3-carboxylate methyl 1,4-dihydroxy-7-phenoxyisoquinoline-3-carboxylate 1421312-32-4 C17H13NO5
1-(2,3-DIMETHYLPHENYL)PROPAN-1-OL 1-(2,3-DIMETHYLPHENYL)PROPAN-1-OL 944268-64-8 C11H16O
4-(4-chlorophenyl)-5-methyl-3-phenylisoxazole 4-(4-chlorophenyl)-5-methyl-3-phenylisoxazole 1448355-87-0 C16H12ClNO
Febuxostat Bromo Impurity Febuxostat Bromo Impurity 144060-40-2 C15H16BrNO3S
Meptazinol Impurity Meptazinol Impurity
1'H-2,3'-bipyridinyl-2'-one 1'H-2,3'-bipyridinyl-2'-one 101002-01-1 C10H8N2O
Brexpiprazole Impurity D Brexpiprazole Impurity D
Brivaracetam Impurity E Brivaracetam Impurity E
Dapoxetine Impurity 8 Dapoxetine Impurity 8
Irbesartan Impurity 6 Irbesartan Impurity 6 C25H28N6O
Empagliflozin impurity B Empagliflozin impurity B
Varenicline Impurity 1 Varenicline Impurity 1
Voriconazole Impurity 6 Voriconazole Impurity 6
Caspofungin impurity 1 Caspofungin impurity 1
Cabozantinib impurity D Cabozantinib impurity D
Neratinib Impurity 3 Neratinib Impurity 3
Ranitidine Impurity D Ranitidine Impurity D C13H22N4O3S
Metoprolol IMpurity 5 Metoprolol IMpurity 5 C15H25NO3
Mirabegron Impurity 2 Mirabegron Impurity 2
Pemetrexed Impurity 1 Pemetrexed Impurity 1 1644287-26-2 C20H21N5O8
Plerixafor Impurity B Plerixafor Impurity B
Tolvaptan impurity3 Tolvaptan impurity3
Vonoprazan Impurity 7 Vonoprazan Impurity 7
Cefazolin impurity F Cefazolin impurity F
Apremilast Impurity 3 Apremilast Impurity 3 88687-92-7 C16H10N2O8
Apixaban Impurity 8 Apixaban Impurity 8 1777781-49-3 C24H23N5O4
Ritodrine BP Impurity D Ritodrine BP Impurity D
Rivaroxaban Impurity 19 Rivaroxaban Impurity 19
Topiroxostat Impurity 4 Topiroxostat Impurity 4 1379342-46-7 C8H8N2O3
Ertapenem impurity 1 Ertapenem impurity 1
(R)-2-(3-(diisopropylamino)-1-phenylpropyl)-4-(hydroxymethyl)phenyl methacrylate (R)-2-(3-(diisopropylamino)-1-phenylpropyl)-4-(hydroxymethyl)phenyl methacrylate C26H36NO3
Flomoxef Impurity 3 Flomoxef Impurity 3
Ropivacaine impurity Ropivacaine impurity 1105704-96-8 C12H14N2O3
Agomelatine Impurity 1 Agomelatine Impurity 1 1352139-51-5 C15H19NO2
Diquafosol Impurity 1 Diquafosol Impurity 1 26184-65-6 C18H24N4O17P2
Milnacipran Impurity 3 Milnacipran Impurity 3 1353644-50-4 C15H20ClNO
L-Glutamic acid 1-ethyl ester L-Glutamic acid 1-ethyl ester 52454-78-1 C7H13NO4
Methyl 2-Hydroxy-2-(Thiophen-2-Yl)-2-(Thiophen-3-Yl)Acetate Methyl 2-Hydroxy-2-(Thiophen-2-Yl)-2-(Thiophen-3-Yl)Acetate 28748-67-6 C11H10O3S2
6,7-Dihydro-N-methyl-N-[(3R,4R)-4-methyl-3-piperidinyl]-5H-pyrrolo[2,3-d]pyrimidin-4-amine 6,7-Dihydro-N-methyl-N-[(3R,4R)-4-methyl-3-piperidinyl]-5H-pyrrolo[2,3-d]pyrimidin-4-amine 1812890-23-5 C13H21N5
Sacubitril Impurity 72 Sacubitril Impurity 72 1361408-16-3 C23H27NO4
(1R,2S,3R)-Aprepitant (1R,2S,3R)-Aprepitant 1185502-97-9 C23H21F7N4O3
Clemastine Clemastine 108825-05-4 C21H26ClNO2
4-chloro-7-methoxyquinoline-6-carboxylic acid 4-chloro-7-methoxyquinoline-6-carboxylic acid 771464-30-3 C11H8ClNO3
ethyl (41S,13aR)-13a-ethyl-2,3,41,5,6,13a-hexahydro-1H-indolo[3,2,1-de]pyrido[3,2,1-ij][1,5]naphthyridine-12-carboxylate ethyl (41S,13aR)-13a-ethyl-2,3,41,5,6,13a-hexahydro-1H-indolo[3,2,1-de]pyrido[3,2,1-ij][1,5]naphthyridine-12-carboxylate 85647-43-4 C22H26N2O2
methyl (41R,12R,13aR)-13a-ethyl-12-hydroxy-2,3,41,5,6,12,13,13a-octahydro-1H-indolo[3,2,1-de]pyrido[3,2,1-ij][1,5]naphthyridine-12-carboxylate methyl (41R,12R,13aR)-13a-ethyl-12-hydroxy-2,3,41,5,6,12,13,13a-octahydro-1H-indolo[3,2,1-de]pyrido[3,2,1-ij][1,5]naphthyridine-12-carboxylate 38990-16-8 C21H26N2O3
Dolutegravir Impurity 3 Dolutegravir Impurity 3 1973402-05-9 C20H19F2N3O5
Cistracurium Besylate EP Impurity D Cistracurium Besylate EP Impurity D 1075726-88-3 C31H39NO9S
(R)-1-[3-[4-Amino-3-(4-phenoxyphenyl)-1H-pyrazolo[3,4-d]pyrimidin-1-yl]piperidin-1-yl]-3-chloropropan-1-one (R)-1-[3-[4-Amino-3-(4-phenoxyphenyl)-1H-pyrazolo[3,4-d]pyrimidin-1-yl]piperidin-1-yl]-3-chloropropan-1-one 1288338-96-4 C25H25ClN6O2
Bendamustine Impurity 8 Bendamustine Impurity 8 1797881-48-1 C14H19Cl2N3O2
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