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Pharmaceutical Impurity Reference Standards

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Structure Chemical Name CAS MF
Cefazolin USP Impurity D Cefazolin USP Impurity D
Cefuroxime Impurity 9 Cefuroxime Impurity 9 2165460-37-5 C8H10N2O4S
Everolimus Impurity E Everolimus Impurity E
Peramivir Impurity 3 Peramivir Impurity 3
Peramivir Impurity 8 Peramivir Impurity 8
Pitavastatin Impurity 13 Pitavastatin Impurity 13
Pramipexole Impurity R Pramipexole Impurity R
Tadalafil Impuirty 21 Tadalafil Impuirty 21
Abacavir Abacavir 141271-12-7 C10H14ClN5O
Canagliflozin Impurity 42 Canagliflozin Impurity 42
Maleic Acid Maleic Acid 2170020-79-6 C21H20FN3O6S
Ozagrel Impurity 21 Ozagrel Impurity 21 883942-98-1 C23H20N2O4
Terbutaline Impurity Terbutaline Impurity 1226543-90-3 C22H20O4
lidocaine impurity lidocaine impurity 1374010-02-2 C30H36N4O3
Desloratadine Impurity 7 Desloratadine Impurity 7
Esomeprazole Impurity 28 Esomeprazole Impurity 28
ethyl 2-(3-carbamoyl-4-isobutoxyphenyl)-4-methylthiazole-5- carboxylate ethyl 2-(3-carbamoyl-4-isobutoxyphenyl)-4-methylthiazole-5- carboxylate 1346238-15-0 C18H22N2O4S
Ropivacaine impurity Ropivacaine impurity 1786518-57-7 C13H16N2O3
Bendamustine Impurity 25 Bendamustine Impurity 25
Canagliflozin Impurity 25 Canagliflozin Impurity 25
Edoxaban Impurity 41 Edoxaban Impurity 41 1353893-25-0 C14H27N3O3
Istradefylline Impurity 5 Istradefylline Impurity 5
Milrinone Impurity 10 Milrinone Impurity 10
N-(2-Chloro-ethyl)-N'-(2,3-dichloro-phenyl)-ethane-1,2-diamine N-(2-Chloro-ethyl)-N'-(2,3-dichloro-phenyl)-ethane-1,2-diamine C10H13Cl3N2
Olanzapine Impurity 3 Olanzapine Impurity 3 C17H20N4S
Ticagrelor Related Compound 54 Ticagrelor Related Compound 54
Adefovir Impurity D Adefovir Impurity D
Blonanserin Impurity N Blonanserin Impurity N
Brexpiprazole Impurity N Brexpiprazole Impurity N
Cefaclor Impurity 1 Cefaclor Impurity 1
Cefminox Sodium impurity 4 Cefminox Sodium impurity 4
Cefradine Impurity B Cefradine Impurity B
Dapoxetine Impurity F Dapoxetine Impurity F
Olaparib Impurity E Olaparib Impurity E
Cefathiamidine Impurity 6 Cefathiamidine Impurity 6 28240-16-6 C12H13ClN2O6S
Ticagrelor impurity Ticagrelor impurity 1882095-50-2 C27H43N5O10S
Levofloxacin Impurity 23 Levofloxacin Impurity 23 2206825-95-6 C19H21ClFN3O4
Nitrendipine impurity 1 Nitrendipine impurity 1 1242511-98-3 C18H18N2O5
methyl 7-bromo-4-hydroxyisoquinoline-3-carboxylate methyl 7-bromo-4-hydroxyisoquinoline-3-carboxylate 1572439-66-7 C11H8BrNO3
Dapoxetine impurity Dapoxetine impurity 2242008-36-0 C28H26O3
Pregabalin Impurity 11 Pregabalin Impurity 11 177432-20-1 C7H11NO3
Pregabalin Impurity 6 Pregabalin Impurity 6 2102350-92-3 C9H15NO3
Sunitinib Impurity 2 Sunitinib Impurity 2
(2S,3R,4R,5S,6R)-2-(3-(4-ethoxybenzyl)phenyl)-6-(hydroxyl methyl)tetrahydro-2H-pyran-3,4,5-triol (2S,3R,4R,5S,6R)-2-(3-(4-ethoxybenzyl)phenyl)-6-(hydroxyl methyl)tetrahydro-2H-pyran-3,4,5-triol 2452300-89-7 C21H26O6
(R)-Zanubrutinib (R)-Zanubrutinib 1691249-44-1 C27H29N5O3
LUMAT-005 LUMAT-005 313369-16-3 C16H19N3O3
Fimasartan Impurity F Fimasartan Impurity F
Amlodipine Impurity 23 (E-Isomer) Amlodipine Impurity 23 (E-Isomer) C26H31ClN2O8S
Axitinib Impurity 12 Axitinib Impurity 12
Mono Oxidation Sugammadex(Org199425-1) Mono Oxidation Sugammadex(Org199425-1) 2412953-14-9 C72H113NaO49S8
Moxifloxacin Impurity 40 Moxifloxacin Impurity 40 121577-35-3 C15H16F3NO4
sodium 2-(((3,4-dimethoxypyridin-2-yl)methyl)thio)-5- hydroxy-4-sulfonatobenzo[d]imidazol-1-ide sodium 2-(((3,4-dimethoxypyridin-2-yl)methyl)thio)-5- hydroxy-4-sulfonatobenzo[d]imidazol-1-ide C15H13N3Na2O6S2
Dexmedetomidine-007 Dexmedetomidine-007 2240179-63-7 C13H16N2
2-(5-methyl-4-phenylisoxazol-3-yl)benzenesulfonamide 2-(5-methyl-4-phenylisoxazol-3-yl)benzenesulfonamide 2304623-37-6 C16H14N2O3S
Axitinib Impurity 17 Axitinib Impurity 17
Erlotinib Impurity 37 Erlotinib Impurity 37
Bis{2-[benzyl(methyl)amino]ethyl} 2,6-dimethyl-4-(3-nitrophenyl)-1,4-dihydropyridine-3,5-dicarboxylate dihydrochloride Bis{2-[benzyl(methyl)amino]ethyl} 2,6-dimethyl-4-(3-nitrophenyl)-1,4-dihydropyridine-3,5-dicarboxylate dihydrochloride 71784-27-5 C35H41ClN4O6
3-amino-6-chloro-2-methyl-4-phenylquinazolin-4-ol 3-amino-6-chloro-2-methyl-4-phenylquinazolin-4-ol 27537-87-7 C15H14ClN3O
Riluzole 5-Trifluoromethoxy Isomer Riluzole 5-Trifluoromethoxy Isomer 752969-85-0 C8H5F3N2OS
Pazufloxacin Impurity 7 Pazufloxacin Impurity 7 171567-48-9 C15H15FN2O3
Empagliflozin Impurity 42 Empagliflozin Impurity 42
2-amino-2-(4-nonylphenethyl)propane-1,3-diol 2-amino-2-(4-nonylphenethyl)propane-1,3-diol 746594-44-5 C20H35NO2
Zopiclone Impurity 17 Zopiclone Impurity 17
Pregabalin Impurity D Pregabalin Impurity D 53439-96-6 C11H14O3
Cephalosporin Impurity 3 HCl Cephalosporin Impurity 3 HCl 2429-86-9 C14H17N3O6S
((2R,3S,4R,5R,6S)-6-(3-((5-(4-fluorophenyl)thiophen-2-yl) methyl)-4-methylphenyl)-3,4,5-trihydroxytetrahydro- 2H-pyran-2-yl)methyl acetate ((2R,3S,4R,5R,6S)-6-(3-((5-(4-fluorophenyl)thiophen-2-yl) methyl)-4-methylphenyl)-3,4,5-trihydroxytetrahydro- 2H-pyran-2-yl)methyl acetate 2146135-87-5 C26H27FO6S
Atracurium Impurity 5 Atracurium Impurity 5
Cefazolin Impurity 1 Cefazolin Impurity 1
Tofacitinib Impurity 77 Tofacitinib Impurity 77 1640971-51-2 C16H20N6O2
Tofacitinib Impurity 84 Tofacitinib Impurity 84
De(carboxymethoxy) Cetirizine Acetic Acid Dihydrochloride De(carboxymethoxy) Cetirizine Acetic Acid Dihydrochloride 1000690-91-4 C19H22Cl2N2O2
7-Despropyl 7-Methyl Vardenafil 7-Despropyl 7-Methyl Vardenafil 2169247-39-4 C21H28N6O4S
Apixaban Impurity 32 Apixaban Impurity 32
Apremilast Impurity 20 Apremilast Impurity 20
Bendamustine Impurity 36 Bendamustine Impurity 36
Bosutinib Impurity 7 Bosutinib Impurity 7 219786-51-3 C10H12BrNO4
Cefazolin Impurity 13 Cefazolin Impurity 13
Cefoxitin Impurity 4 Cefoxitin Impurity 4
Cilnidipine Impurity 3 Cilnidipine Impurity 3 123853-41-8 C24H22N2O6
Erlotinib Impurity 50 Erlotinib Impurity 50
Pitavastatin Impurity 26 Pitavastatin Impurity 26
Plerixafor Impurity 2 Plerixafor Impurity 2
Pregabalin Impurity 48 Pregabalin Impurity 48 1239856-83-7 C11H23NO2
Rivaroxaban Impurity 76 Rivaroxaban Impurity 76
Rocuronium bromide Impurity 36 Rocuronium bromide Impurity 36
Sildenafil Impurity 14 Sildenafil Impurity 14 2146091-79-2 C24H32N6OS2
Telmisartan Impurity 6 Telmisartan Impurity 6 1083158-65-9 C19H22N4O
Apremilast Impurity CNA Apremilast Impurity CNA
Atracurium Impurity Q Atracurium Impurity Q
Atracurium Impurity W Atracurium Impurity W
AZD9291(Osimertinib) Impurity 5 AZD9291(Osimertinib) Impurity 5
Azilsartan impurity Y Azilsartan impurity Y
Celecoxib Impurity 15 Celecoxib Impurity 15 C17H14F3N3O2S
Etoposide Impurity 2 Etoposide Impurity 2
Fludarabine EP impurity J Fludarabine EP impurity J
Ropivacaine Impurity 12 Ropivacaine Impurity 12
Solifenacin impurity 17 Solifenacin impurity 17 1029430-94-1 C19H17N3O
Sugammadex sodium Org205485-1 Impurity Sugammadex sodium Org205485-1 Impurity
Sugammadex sodium Org246653-1 Impurity Sugammadex sodium Org246653-1 Impurity
Tadalafil impurity R Tadalafil impurity R
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