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Pharmaceutical Impurity Reference Standards

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Structure Chemical Name CAS MF
N-((4-(5-(p-tolyl)-3-(trifluoromethyl)-1H-pyrazol-1-yl)phenyl) sulfonyl)acetamide N-((4-(5-(p-tolyl)-3-(trifluoromethyl)-1H-pyrazol-1-yl)phenyl) sulfonyl)acetamide 198471-47-5 C19H16F3N3O3S
Afatinib impurity 35 Afatinib impurity 35
Avibactam Impurity 40 Avibactam Impurity 40 2089462-89-3 C15H20N2O3
Butyphthalide impurity 29 Butyphthalide impurity 29
Butyphthalide impurity 38 Butyphthalide impurity 38 1841089-56-2 C24H30O5
Canagliflozin Impurity 39 Canagliflozin Impurity 39
Cefaclor double bond displacement impurity 9 Cefaclor double bond displacement impurity 9
Diquafosol Impurity 7 Diquafosol Impurity 7
Febuxostat Impurity 75 Febuxostat Impurity 75
Febuxostat Impurity 90 Febuxostat Impurity 90
Febuxostat Impurity 95 Febuxostat Impurity 95
Ibrutinib Impurity 17 Ibrutinib Impurity 17 2134109-10-5 C16H18N6O
LCZ696(valsartan + sacubitril) impurity 36 LCZ696(valsartan + sacubitril) impurity 36
Lenvatinib Impurity 17 Lenvatinib Impurity 17
Moxifloxacin degradation impurity 36 Moxifloxacin degradation impurity 36
Moxifloxacin Impurity 49 Moxifloxacin Impurity 49
Olsalazine Impurity B Olsalazine Impurity B
Parecoxib sodium Impurity 32 Parecoxib sodium Impurity 32
Rosuvastatin Impurity 39 Rosuvastatin Impurity 39
Tofacitinib Impurity 95 Tofacitinib Impurity 95
Vildagliptin Impurity ZA4 Vildagliptin Impurity ZA4
(E)-4-(2-(1-(m-tolyl)ethylidene)hydrazinyl)benzenesulfonamide (E)-4-(2-(1-(m-tolyl)ethylidene)hydrazinyl)benzenesulfonamide C15H17N3O2S
Gefitinib impurity M Gefitinib impurity M
Linagliptin Impurity CD10088 Linagliptin Impurity CD10088
Tacrolimus Ring-opening Impurity Tacrolimus Ring-opening Impurity 1393890-33-9 C44H69NO12
Tadalafil Impurity 35 Tadalafil Impurity 35 749864-17-3 C20H18N2O4
Epinastine Impurity 1 HCl Epinastine Impurity 1 HCl 141342-71-4 C15H15N3O2
Flurbiprofen Impurity 5 Flurbiprofen Impurity 5 124635-84-3 C18H19FO4
Azacitidine Impurity 31 Azacitidine Impurity 31 65024-85-3 C11H16O8
Diazepam Impurity 3 Diazepam Impurity 3 176796-46-6 C17H17ClN2O2
Pitavastatin Impurity 19 Sodium Salt Pitavastatin Impurity 19 Sodium Salt 1980814-87-6 C25H24FNO5
N-(4-(4-fluorophenyl)-5-((E)-2-((2R,4R)-4-hydroxy-6- oxotetrahydro-2H-pyran-2-yl)vinyl)-6-isopropylpyrimidin- 2-yl)-N-methylmethanesulfonamide N-(4-(4-fluorophenyl)-5-((E)-2-((2R,4R)-4-hydroxy-6- oxotetrahydro-2H-pyran-2-yl)vinyl)-6-isopropylpyrimidin- 2-yl)-N-methylmethanesulfonamide C22H26FN3O5S
Fulvestrant EP Impurity E Fulvestrant EP Impurity E 2170200-14-1 C32H45F5O3S
Edaravone Impurity 16 Edaravone Impurity 16
Linagliptin Impurity 50 Linagliptin Impurity 50
Landiolol impurity K Landiolol impurity K 190601-22-0 C19H29N3O6
Efinaconazole Impurity 13 Efinaconazole Impurity 13 2055038-61-2 C18H22F2N4O
Crisaborole Impurity Crisaborole Impurity 906673-42-5 C14H10BNO3
tert-butyl 2-((4R,6S)-6-(2-(2-(4-fluorophenyl)-5-isopropyl-3-phenyl- 4-(phenylcarbamoyl)-1H-pyrrol-1-yl)ethyl)-2,2-dimethyl-1,3-dioxan-4-yl)acetate tert-butyl 2-((4R,6S)-6-(2-(2-(4-fluorophenyl)-5-isopropyl-3-phenyl- 4-(phenylcarbamoyl)-1H-pyrrol-1-yl)ethyl)-2,2-dimethyl-1,3-dioxan-4-yl)acetate 947249-30-1 C40H47FN2O5
Olanzapine impurity N Olanzapine impurity N C17H20N4S
Cabozantinib impurity 25 Cabozantinib impurity 25
Afatinib impurity 43 Afatinib impurity 43
Vildagliptin Impurity 39 Vildagliptin Impurity 39
Tazobactam Impurity D Tazobactam Impurity D
Palonosetron Impurity 22 Palonosetron Impurity 22 1217547-14-2 C19H24N2O2
Pitavastatin Impurity 35 Pitavastatin Impurity 35
Pralatrexate Impurity 15 Pralatrexate Impurity 15
Pitavastatin Impurity 52 Pitavastatin Impurity 52
Pitavastatin Impurity 60 Pitavastatin Impurity 60 1661064-71-6 C25H22FNO3
Lenvatinib Impurity 43 Lenvatinib Impurity 43
Voriconazole Impurity 10 Voriconazole Impurity 10
Prednicarbate Impurity D Prednicarbate Impurity D
Olprinone Impurity A Olprinone Impurity A 141354-29-2 C12H10N4O
Everolimus EP Impurity E Everolimus EP Impurity E 1237826-25-3 C52H79NO14
Edaravone Impurity P4 Edaravone Impurity P4
Afatinib impurity 47 Afatinib impurity 47
Canagliflozin Impurity 50 Canagliflozin Impurity 50
Canagliflozin Impurity 66 Canagliflozin Impurity 66
Acyclovir Impurity 12 Acyclovir Impurity 12
4-(4-Hydroxy-3-hydroxymethyl-phenoxy)-benzonitrile 4-(4-Hydroxy-3-hydroxymethyl-phenoxy)-benzonitrile C14H11NO3
Cabozantinib impurity P Cabozantinib impurity P
Rotigotine Impurity 7 Rotigotine Impurity 7
Nicorandil Impurity B Nicorandil Impurity B
Cilastatin Impurity 8 Cilastatin Impurity 8
Tamsulosin impurity E Tamsulosin impurity E C20H28N2O5S
Flucloxacillin Impurity H Flucloxacillin Impurity H
Cefminox Impurity 2 Cefminox Impurity 2
Afatinib Impurity 56 Afatinib Impurity 56
Aprepitant Impurity 34 Aprepitant Impurity 34
Bosutinib Impurity 14 Bosutinib Impurity 14
Brivaracetam Impurity 16 Brivaracetam Impurity 16
Etoricoxib Impurity 41 Etoricoxib Impurity 41 855307-80-1 C18H13ClN2O2S
Fluvoxamine Impurity 10 Fluvoxamine Impurity 10
Nintedanib Impurity 50 Nintedanib Impurity 50 2410284-90-9 C56H52N8O8
Olopatadine Impurity 8 Olopatadine Impurity 8
Oseltamivir Impurity 36 Oseltamivir Impurity 36
Palbociclib Impurity 61 Palbociclib Impurity 61 2222404-53-5 C14H20N4O4
Palbociclib Impurity 41 Palbociclib Impurity 41
Saxagliptin Impurity 8 Saxagliptin Impurity 8
Tenofovir Impurity 63 Tenofovir Impurity 63
Ticagrelor Impurity 99 Ticagrelor Impurity 99
Ticagrelor Impurity 114 Ticagrelor Impurity 114
Ticagrelor Impurity 98 Ticagrelor Impurity 98
Tofacitinib Impurity 118 Tofacitinib Impurity 118
Trelagliptin Impurity 23 Trelagliptin Impurity 23
Vildagliptin Impurity 33 Vildagliptin Impurity 33
Vildagliptin Impurity 44 Vildagliptin Impurity 44
Voriconazole Impurity 16 Voriconazole Impurity 16 1157981-64-0 C10H7F2N3O
Itraconazole iMpurity 3 Itraconazole iMpurity 3
1-(3,5-bis(benzyloxy)phenyl)-2,2-dibromoethan-1-one 1-(3,5-bis(benzyloxy)phenyl)-2,2-dibromoethan-1-one C22H18Br2O3
Axitinib Impurity 8 Axitinib Impurity 8
Agomelatine Impurity 11 Agomelatine Impurity 11
Saxagliptin Impurity 7 Saxagliptin Impurity 7
Cinacalcet Impurity 23 Cinacalcet Impurity 23
Erlotinib Impurity 24 Erlotinib Impurity 24
Ticagrelor Impurity 47 Ticagrelor Impurity 47
Edaravone Impurity 10 Edaravone Impurity 10
Empagliflozin Impurity 10 Empagliflozin Impurity 10
Canagliflozin Impurity 10 Canagliflozin Impurity 10
Rivaroxaban Impurity 35 Rivaroxaban Impurity 35
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