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Pharmaceutical Impurity Reference Standards
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- Structure:

- Chemical Name:Dithio-Desethyl Carbodenafil
- CAS:1610830-81-3
- MF:C22H28N6OS2
- Chemical Name:Erlotinib Impurity 57
- CAS:
- MF:
- Chemical Name:Esomeprazole Impurity 41
- CAS:
- MF:
- Chemical Name:Oseltamivir Impurity 29
- CAS:
- MF:
- Chemical Name:Pramipexole Impurity 36
- CAS:
- MF:
- Structure:

- Chemical Name:Riboflavin Impurity 1
- CAS:64480-68-8
- MF:C16H20N2O7
- Chemical Name:Rocuronium Bromide Impurity 10
- CAS:
- MF:
- Structure:

- Chemical Name:Rocuronium Bromide Impurity 23
- CAS:
- MF:C23H39NO3
- Chemical Name:Adefovir Impurity 10
- CAS:
- MF:
- Chemical Name:Apremilast Impurity SY
- CAS:
- MF:
- Chemical Name:Atracurium Impurity L
- CAS:
- MF:
- Chemical Name:Cefoxitin EP Impurity G
- CAS:
- MF:
- Chemical Name:Dextrorotation lansoprazole Impurity L
- CAS:
- MF:
- Chemical Name:lansoprazole Impurity 25
- CAS:
- MF:
- Chemical Name:Mirabegron Enantiomer Impurity
- CAS:
- MF:
- Chemical Name:Ropivacaine Impurity 44
- CAS:
- MF:
- Chemical Name:Ropivacaine Impurity 7
- CAS:
- MF:
- Chemical Name:Sugammadex sodium Org199010-1 Impurity
- CAS:
- MF:
- Chemical Name:Sugammadex sodium Org226100-1 Impurity
- CAS:
- MF:
- Chemical Name:Afatinib impurity 32
- CAS:
- MF:
- Chemical Name:Butyphthalide impurity 26
- CAS:
- MF:
- Chemical Name:Butyphthalide impurity 32
- CAS:
- MF:
- Chemical Name:Canagliflozin Impurity 30
- CAS:
- MF:
- Structure:

- Chemical Name:Celecoxib Impurity 20
- CAS:343853-74-7
- MF:C6H7N3O3S
- Chemical Name:Emtricitabine Impurity CFTU1
- CAS:
- MF:
- Chemical Name:Esomeprazole Impurity 34
- CAS:
- MF:
- Chemical Name:Febuxostat Impurity 82
- CAS:
- MF:
- Chemical Name:Febuxostat Impurity 87
- CAS:
- MF:
- Chemical Name:Gefitinib Impurity R
- CAS:
- MF:
- Structure:

- Chemical Name:Imatinib impurity 31
- CAS:1356565-47-3
- MF:C17H17N7
- Chemical Name:LCZ696(valsartan + sacubitril) impurity 33
- CAS:
- MF:
- Chemical Name:Lenvatinib Impurity 26
- CAS:
- MF:
- Chemical Name:Ozagrel impurity C
- CAS:
- MF:
- Chemical Name:Regorafenib Impurity 24
- CAS:
- MF:
- Chemical Name:Regorafenib Impurity 32
- CAS:
- MF:
- Chemical Name:Sitafloxacin Impurity ZZ-A-01
- CAS:
- MF:
- Structure:

- Chemical Name:Solifenacin impurity 18
- CAS:1243274-83-0
- MF:C14H17NO3
- Chemical Name:Tofacitinib Impurity 87
- CAS:
- MF:
- Chemical Name:Tofacitinib Impurity 92
- CAS:
- MF:
- Structure:

- Chemical Name:Amlodipine EP Impurity K
- CAS:
- MF:C26H31ClN2O8S
- Chemical Name:Febuxostat Impurity 49
- CAS:
- MF:
- Structure:

- Chemical Name:Budesonide Impurity 6
- CAS:131918-73-5
- MF:C21H26O6
- Structure:

- Chemical Name:Timolol Impurity 1
- CAS:75014-25-4
- MF:C13H24N4O5S
- Structure:

- Chemical Name:Telmisartan EP-J
- CAS:885045-90-9
- MF:C33H29ClN4O2
- Structure:

- Chemical Name:Pitavastatin Impurity 29
- CAS:148516-15-8
- MF:C25H20FNO2
- Structure:

- Chemical Name:Rosuvastatin Related Compound 6
- CAS:521973-99-9
- MF:C13H23ClO4
- Structure:

- Chemical Name:Medetomidine impurity
- CAS:2250243-44-6
- MF:C20H22N2O
- Chemical Name:Linagliptin Impurity 51
- CAS:
- MF:
- Chemical Name:Carfilzomib Impurity YGF
- CAS:
- MF:
- Structure:

- Chemical Name:Pitavastatin Impurity 45
- CAS:1258947-29-3
- MF:C29H32FNO4
- Chemical Name:Irinotecan Impurity L
- CAS:
- MF:
- Chemical Name:Irinotecan Impurity H
- CAS:
- MF:
- Chemical Name:LCZ696(valsartan + sacubitril) impurity 27
- CAS:
- MF:
- Chemical Name:Caspofungin Impurity EJT2
- CAS:
- MF:
- Chemical Name:Tofacitinib Impurity 100
- CAS:
- MF:
- Chemical Name:Afatinib impurity 37
- CAS:
- MF:
- Chemical Name:Vildagliptin Impurity 36
- CAS:
- MF:
- Chemical Name:Butyphthalide impurity 52
- CAS:
- MF:
- Structure:

- Chemical Name:Tofacitinib Impurity 102
- CAS:1615709-90-4
- MF:C14H17ClN2
- Structure:

- Chemical Name:Pralatrexate Impurity 12
- CAS:1451250-74-0
- MF:C23H23N7O5
- Chemical Name:Pralatrexate Impurity 17
- CAS:
- MF:
- Chemical Name:Pitavastatin Impurity 49
- CAS:
- MF:
- Chemical Name:Pitavastatin Impurity 55
- CAS:
- MF:
- Chemical Name:Lenvatinib Impurity 40
- CAS:
- MF:
- Chemical Name:Tazobactam Impurity 11
- CAS:
- MF:
- Chemical Name:Crisaborole Impurity 2
- CAS:
- MF:
- Chemical Name:Canagliflozin Impurity 58
- CAS:
- MF:
- Chemical Name:Canagliflozin Impurity 63
- CAS:
- MF:
- Chemical Name:Levetiracetam Impurity 23
- CAS:
- MF:
- Structure:

- Chemical Name:Selexipag Impurity 4
- CAS:2928611-77-0
- MF:C26H31N3O3
- Structure:

- Chemical Name:Levosimendan Impurity 10
- CAS:134678-47-0
- MF:C11H12N2O2
- Chemical Name:Cabozantinib impurity I
- CAS:
- MF:
- Chemical Name:Rotigotine Impurity 2
- CAS:
- MF:
- Chemical Name:Rotigotine Impurity 9
- CAS:
- MF:
- Chemical Name:Olprinone Impurity 5
- CAS:
- MF:
- Structure:

- Chemical Name:Vitamin B5 Impurity 1
- CAS:897045-90-8
- MF:C12H22N2O6
- Chemical Name:Cilastatin Impurity 5
- CAS:
- MF:
- Structure:

- Chemical Name:(R)-3-(4-(2-chloro-5-iodobenzyl)phenoxy)tetrahydrofuran
- CAS:2194590-02-6
- MF:C17H16ClIO2
- Structure:

- Chemical Name:Sitagliptin Impurity 69
- CAS:2172430-88-3
- MF:C15H16F3NO4
- Chemical Name:Trimetazidine Impurity 8
- CAS:
- MF:
- Chemical Name:MeropeneM iMpurity 5
- CAS:
- MF:
- Structure:

- Chemical Name:Perindopril IMpurity 6
- CAS:2163775-15-1
- MF:C8H15NO4
- Structure:

- Chemical Name:Oseltamivir Impurity 48
- CAS:651324-04-8
- MF:C18H33NO4
- Structure:

- Chemical Name:Tamsulosin impurity 5
- CAS:
- MF:C20H28N2O5S
- Chemical Name:Flucloxacillin Impurity 5
- CAS:
- MF:
- Chemical Name:Nitrendipine iMpurity G
- CAS:
- MF:
- Structure:

- Chemical Name:(S)-N-(5-((S)-2-(2,5-difluorophenyl)pyrrolidin-1-yl)pyrazolo[1,5-a]pyrimidin-3-yl)-3-hydroxypyrrolidine-1-carboxamide
- CAS:2409589-59-7
- MF:C21H22F2N6O2
- Chemical Name:Afatinib Impurity 53
- CAS:
- MF:
- Chemical Name:Afatinib Impurity 68
- CAS:
- MF:
- Chemical Name:Empagliflozin Impurity 61
- CAS:
- MF:
- Structure:

- Chemical Name:Ipragliflozin Impurity 3
- CAS:1922933-61-6
- MF:C21H21FO6S
- Chemical Name:Isavuconazole Impurity 30
- CAS:
- MF:
- Chemical Name:Levetiracetam Impurity 27
- CAS:
- MF:
- Chemical Name:Linagliptin Impurity 58
- CAS:
- MF:
- Chemical Name:Oseltamivir Impurity 33
- CAS:
- MF:
- Chemical Name:Oseltamivir Impurity 49
- CAS:
- MF:
- Chemical Name:Palbociclib Impurity 52
- CAS:
- MF:
- Chemical Name:Palbociclib Impurity 37
- CAS:
- MF:
- Structure:

- Chemical Name:Pazufloxacin Impurity 16
- CAS:165071-10-3
- MF:C14H10FNO6
- Chemical Name:Pimecrolimus Impurity 4
- CAS:
- MF: