Pharmaceutical Impurity Reference Standards

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Structure Chemical Name CAS MF
Cefazolin Impurity L Cefazolin Impurity L
Ceftazidime hetero trans oxidation Impurity Ceftazidime hetero trans oxidation Impurity
Regorafenib Impurity 17 Regorafenib Impurity 17
Ropivacaine Impurity 45 Ropivacaine Impurity 45 2726971-51-1
Sildenafil Impurity 17 Sildenafil Impurity 17 C22H30N6O4S
Sugammadex sodium Org199074-1 Impurity Sugammadex sodium Org199074-1 Impurity
Sugammadex sodium Org238832-1 Impurity Sugammadex sodium Org238832-1 Impurity
Afatinib impurity 33 Afatinib impurity 33
Avibactam Impurity 38 Avibactam Impurity 38 2241730-86-7 C20H29BrN2O5
Butyphthalide impurity 27 Butyphthalide impurity 27 33704-16-4 C12H12O5
Butyphthalide impurity 35 Butyphthalide impurity 35
Canagliflozin Impurity 31 Canagliflozin Impurity 31
Celecoxib Impurity 21 Celecoxib Impurity 21 2055787-31-8 C17H12F3N3O3S
Emtricitabine Impurity CFTU2 Emtricitabine Impurity CFTU2
Febuxostat Impurity 88 Febuxostat Impurity 88
Gefitinib Impurity S Gefitinib Impurity S
Ibrutinib Impurity 15 Ibrutinib Impurity 15 1288338-97-5 C47H46N12O3
LCZ696(valsartan + sacubitril) impurity 34 LCZ696(valsartan + sacubitril) impurity 34
Lenvatinib Impurity 27 Lenvatinib Impurity 27
Montelukast sodium impurity H Montelukast sodium impurity H
Regorafenib Impurity 25 Regorafenib Impurity 25
Regorafenib Impurity 33 Regorafenib Impurity 33
Sitafloxacin Impurity ZZ-A-02 Sitafloxacin Impurity ZZ-A-02
Solifenacin impurity 19 Solifenacin impurity 19 1422505-78-9 C17H17NO
Tofacitinib Impurity 93 Tofacitinib Impurity 93
Topiroxostat Impurity 30 Topiroxostat Impurity 30
Sitafloxacin Impurity 8 Sitafloxacin Impurity 8
Budesonide Impurity 7 Budesonide Impurity 7 3949-79-9 C23H28O7
Azacitidine Impurity 34 Azacitidine Impurity 34 105330-94-7 C9H14N4O5
Diazepam Impurity 1 Diazepam Impurity 1 36020-94-7 C16H15ClN2O2
Rosuvastatin Related Compound 8 Rosuvastatin Related Compound 8 521974-01-6 C13H23ClO4
ammonium 1-(5-methoxy-1H-benzo[d]imidazol-2-yl)-3,5-dimethyl-4-oxo-1,4-dihydropyridine-2-carboxylate ammonium 1-(5-methoxy-1H-benzo[d]imidazol-2-yl)-3,5-dimethyl-4-oxo-1,4-dihydropyridine-2-carboxylate 2227107-89-1 C16H18N4O4
Aztreonam Impurity 8 Aztreonam Impurity 8
(1s,4s)-4-((2-amino-4-bromobenzyl)amino)cyclohexan-1-ol hydrochloride (1s,4s)-4-((2-amino-4-bromobenzyl)amino)cyclohexan-1-ol hydrochloride C13H20BrClN2O
Pitavastatin Impurity 18 Sodium Salt Pitavastatin Impurity 18 Sodium Salt 2276678-27-2 C25H25FNNaO5
Moxifloxacin Impurity 67 Moxifloxacin Impurity 67 1430075-14-1 C10H16ClNO3
Landiolol impurity Landiolol impurity
Irinotecan Impurity K Irinotecan Impurity K
Palbociclib  Impurity 28 Palbociclib Impurity 28
Afatinib impurity 40 Afatinib impurity 40
Vildagliptin Impurity 37 Vildagliptin Impurity 37
Tazobactam Impurity B Tazobactam Impurity B 115546-66-2 C10H12N4O5S
Brexpiprazole Impurity 20 Brexpiprazole Impurity 20 105685-34-5 C12H14N2O
Pralatrexate Impurity 13 Pralatrexate Impurity 13
Pralatrexate Impurity 18 Pralatrexate Impurity 18
Pitavastatin Impurity 50 Pitavastatin Impurity 50
Pitavastatin Impurity 58 Pitavastatin Impurity 58
Lenvatinib Impurity 41 Lenvatinib Impurity 41
Tazobactam Impurity 12 Tazobactam Impurity 12
Tofacitinib Impurity 103 Tofacitinib Impurity 103
Posaconazole impurity 69 Posaconazole impurity 69
Crisaborole Impurity 3 Crisaborole Impurity 3
Canagliflozin Impurity 59 Canagliflozin Impurity 59
Canagliflozin Impurity 64 Canagliflozin Impurity 64
Hydroxychloroquine Impurity I Hydroxychloroquine Impurity I
Sitafloxacin Impurity 22 Sitafloxacin Impurity 22
Levetiracetam Impurity 24 Levetiracetam Impurity 24
Selexipag Impurity 5 Selexipag Impurity 5 2928611-79-2
Levosimendan Impurity 11 Levosimendan Impurity 11
Cabozantinib impurity O Cabozantinib impurity O
(41S,12S,13aS)-12-(ethoxycarbonyl)-13a-ethyl-12-hydroxy-2,3,41,5,6,12,13,13a-octahydroindolo[3,2,1-de]pyrido[3,2,1-ij][1,5]naphthyridine 4(1H)-oxide (41S,12S,13aS)-12-(ethoxycarbonyl)-13a-ethyl-12-hydroxy-2,3,41,5,6,12,13,13a-octahydroindolo[3,2,1-de]pyrido[3,2,1-ij][1,5]naphthyridine 4(1H)-oxide 52341-36-3 C22H28N2O4
Rotigotine Impurity 5 Rotigotine Impurity 5
Rotigotine Impurity 10 Rotigotine Impurity 10
(S)-2-cyclopentyl-2-hydroxy-2-phenylacetic acid (S)-2-cyclopentyl-2-hydroxy-2-phenylacetic acid 64471-43-8 C13H16O3
Olprinone Impurity 6 Olprinone Impurity 6
Trenbolone Acetate Process Impurity 4 Trenbolone Acetate Process Impurity 4 5218-51-9 C18H24O2
Cilastatin Impurity 6 Cilastatin Impurity 6
Sitagliptin Impurity 77 Sitagliptin Impurity 77 382638-00-8 C11H21NO7S
Trimetazidine Impurity 6 Trimetazidine Impurity 6
Oseltamivir Impurity 50 Oseltamivir Impurity 50 651324-06-0 C24H42N2O3
Tamsulosin impurity 6 Tamsulosin impurity 6 C20H28N2O5S
Flucloxacillin Impurity 6 Flucloxacillin Impurity 6
Ipratropium bromide Impurity 3 Ipratropium bromide Impurity 3 C20H29Br2NO3
Afatinib Impurity 54 Afatinib Impurity 54
Aprepitant Impurity 32 Aprepitant Impurity 32
Atorvastatin Impurity 34 Atorvastatin Impurity 34 C66H68CaF2N4O10
Cabozantinib Impurity 2 Cabozantinib Impurity 2
Cefathiamidine Impurity 7 Cefathiamidine Impurity 7
Empagliflozin Impurity 62 Empagliflozin Impurity 62 1620758-30-6 C23H27ClO8
Emtricitabine Impurity 5 Emtricitabine Impurity 5
Esomeprazole Impurity 42 Esomeprazole Impurity 42
Gadobutrol Impurity 7 Gadobutrol Impurity 7
Imatinib Impurity 27 Imatinib Impurity 27 67013-55-2 C8H5Br2N
Isavuconazole Impurity 31 Isavuconazole Impurity 31
Linagliptin Impurity 59 Linagliptin Impurity 59
Oseltamivir Impurity 56 Oseltamivir Impurity 56
Palbociclib Impurity 38 Palbociclib Impurity 38
Pemetrexed Impurity 38 Pemetrexed Impurity 38
Posaconazole Impurity 74 Posaconazole Impurity 74
Rabeprazole Impurity 21 Rabeprazole Impurity 21
Sitagliptin Impurity 52 Sitagliptin Impurity 52
Tafluprost Impurity 5 Tafluprost Impurity 5
Ticagrelor Impurity 112 Ticagrelor Impurity 112
Ticagrelor Impurity 96 Ticagrelor Impurity 96 1643413-84-6 C9H9F2N
Tofacitinib Impurity 116 Tofacitinib Impurity 116
Tofacitinib Impurity 121 Tofacitinib Impurity 121
Trelagliptin Impurity 28 Trelagliptin Impurity 28
Vildagliptin Impurity 31 Vildagliptin Impurity 31 119694-48-3 C10H14N4O6
Beclometasone Impurity M Beclometasone Impurity M
O-DESMETHYLCARVEDILOL O-DESMETHYLCARVEDILOL 72956-44-6 C23H24N2O4
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