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Pharmaceutical Impurity Reference Standards

Process impurities, degradation products and genotoxic impurity reference standards with full characterization.

Irbesartan Impurity 1 structure

Irbesartan Impurity 1

CAS: 138402-05-8

In Stock97%+

Clofazimine Impurity 8 structure

Clofazimine Impurity 8

CAS: 138452-44-5

In Stock97%+

Silodosin Impurity 18 structure

Silodosin Impurity 18

CAS: 1384966-05-5

In Stock97%+

Amodiaquine Impurity 2 Hydrochloride structure

Amodiaquine Impurity 2 Hydrochloride

CAS: 13882-44-5

In Stock97%+

Ramipril Impurity 2 Hydrochloride structure

Ramipril Impurity 2 Hydrochloride

CAS: 138877-09-5

In Stock97%+

Brinzolamide Impurity 13 structure

Brinzolamide Impurity 13

CAS: 138890-50-3

In Stock97%+

Brinzolamide Impurity 23 structure

Brinzolamide Impurity 23

CAS: 138890-58-1

In Stock97%+

Enrofloxacin EP Impurity C structure

Enrofloxacin EP Impurity C

CAS: 138892-82-7

In Stock97%+

Sertindole Impurity 1 structure

Sertindole Impurity 1

CAS: 138900-22-8

In Stock97%+

Rasagiline Impurity 6 structure

Rasagiline Impurity 6

CAS: 138911-07-6

In Stock97%+

Glycerol Impurity 13 structure

Glycerol Impurity 13

CAS: 13897-37-5

In Stock97%+

Sulfasalazine Impurity 2 (RRT 0.75) structure

Sulfasalazine Impurity 2 (RRT 0.75)

CAS: 139-56-0

In Stock97%+

Lomustine EP Impurity B structure

Lomustine EP Impurity B

CAS: 13908-11-7

In Stock97%+

Maraviroc 4-Benzyloxyphenyl Impurity ; 100 MG structure

Maraviroc 4-Benzyloxyphenyl Impurity ; 100 MG

CAS: 1391048-06-8

In Stock97%+

Valdecoxib Impurity H structure

Valdecoxib Impurity H

CAS: 1391051-82-3

In Stock97%+

Salmeterol Dimer Impurity structure

Salmeterol Dimer Impurity

CAS: 1391051-88-9

In Stock97%+

Valdecoxib Impurity 1 structure

Valdecoxib Impurity 1

CAS: 1391052-01-9

In Stock97%+

Pioglitazone EP Impurity F structure

Pioglitazone EP Impurity F

CAS: 1391052-15-5

In Stock97%+

Cetirizine Impurity C127 structure

Cetirizine Impurity C127

CAS: 1391052-52-0

In Stock97%+

Sumatriptan EP Impurity H structure

Sumatriptan EP Impurity H

CAS: 1391052-59-7

In Stock97%+

Bendamustine Deschloro Dimer Impurity structure

Bendamustine Deschloro Dimer Impurity

CAS: 1391052-61-1

In Stock97%+

Prasugrel M-fluoro Impurity structure

Prasugrel M-fluoro Impurity

CAS: 1391052-75-7

In Stock97%+

Levocetirizine Impurity 10 (N-Benzyl-2-[2-[(2-hydroxyethyl)amino]ethoxy]acetamide) structure

Levocetirizine Impurity 10 (N-Benzyl-2-[2-[(2-hydroxyethyl)amino]ethoxy]acetamide)

CAS: 1391053-09-0

In Stock97%+

Prasugrel EP Impurity A HCl structure

Prasugrel EP Impurity A HCl

CAS: 1391053-53-4

In Stock97%+

Indinavir Impurity 8 structure

Indinavir Impurity 8

CAS: 1391053-70-5

In Stock97%+

Pramipexole Impurity 74 structure

Pramipexole Impurity 74

CAS: 1391053-80-7

In Stock97%+

Prasugrel EP Impurity C Hydrochloride structure

Prasugrel EP Impurity C Hydrochloride

CAS: 1391053-98-7

In Stock97%+

Almotriptan EP Impurity E Hydrochloride structure

Almotriptan EP Impurity E Hydrochloride

CAS: 1391054-49-1

In Stock97%+

Carvedilol Bis(N-benzylalkylpyrocatechol) Impurity structure

Carvedilol Bis(N-benzylalkylpyrocatechol) Impurity

CAS: 1391054-59-3

In Stock97%+

Amiodarone Impurity 16 structure

Amiodarone Impurity 16

CAS: 1391054-75-3

In Stock97%+

Timolol EP Impurity C structure

Timolol EP Impurity C

CAS: 1391068-18-0

In Stock97%+

Propranolol Impurity 12 structure

Propranolol Impurity 12

CAS: 13917-61-8

In Stock97%+

Phloroglucinol Impurity 59 structure

Phloroglucinol Impurity 59

CAS: 139173-32-3

In Stock97%+

Raltegravir EP Impurity H structure

Raltegravir EP Impurity H

CAS: 1391918-18-5

In Stock97%+

threo-Hydrobupropion-d9 HCl（enantiomer） structure

threo-Hydrobupropion-d9 HCl（enantiomer）

CAS: 1392209-60-7

In Stock97%+

Venadaparib Impurity 99 structure

Venadaparib Impurity 99

CAS: 13925-27-4

In Stock97%+

Zolmitriptan EP Impurity D structure

Zolmitriptan EP Impurity D

CAS: 139264-15-6

In Stock97%+

Zolmitriptan Impurity C structure

Zolmitriptan Impurity C

CAS: 139264-66-7

In Stock97%+

Edoxaban Impurity 58 (1R,3S,4R) structure

Edoxaban Impurity 58 (1R,3S,4R)

CAS: 1392745-22-0

In Stock97%+

Edoxaban Impurity 1 structure

Edoxaban Impurity 1

CAS: 1392745-43-5

In Stock97%+

Edoxaban Impurity 54 (1S,3R,4R) structure

Edoxaban Impurity 54 (1S,3R,4R)

CAS: 1392745-59-3

In Stock97%+

Edoxaban Impurity N3 structure

Edoxaban Impurity N3

CAS: 1392745-70-8

In Stock97%+

Fluorouracil Impurity 26 structure

Fluorouracil Impurity 26

CAS: 13932-53-1

In Stock97%+

Lenvatinib Impurity N2 structure

Lenvatinib Impurity N2

CAS: 13932-55-3

In Stock97%+

Moxifloxacin Impurity 130 structure

Moxifloxacin Impurity 130

CAS: 1393546-65-0

In Stock97%+

Sofosbuvir Impurity 89 structure

Sofosbuvir Impurity 89

CAS: 1394157-34-6

In Stock97%+

Norfloxacin Impurity 5 structure

Norfloxacin Impurity 5

CAS: 139445-58-2

In Stock97%+

Paroxetine Hydrochloride Hemihydrate - Impurity C (Freebase) structure

Paroxetine Hydrochloride Hemihydrate - Impurity C (Freebase)

CAS: 1395408-54-4

In Stock97%+

Ethanolamine Impurity 5 structure

Ethanolamine Impurity 5

CAS: 1395890-46-6

In Stock97%+

Carfilzomib Impurity N2 structure

Carfilzomib Impurity N2

CAS: 1396006-45-3

In Stock97%+

Carfilzomib Impurity N1 structure

Carfilzomib Impurity N1

CAS: 1396006-47-5

In Stock97%+

Cisplatin - Impurity C structure

Cisplatin - Impurity C

CAS: 13965-91-8

In Stock97%+

1-Cyclopropyl-6,7-difluoro-1,4-dihydro-8-methoxy-4-oxo-3-quinolinecarboxylic Acid Anhydride with Diacetyl Borate structure

1-Cyclopropyl-6,7-difluoro-1,4-dihydro-8-methoxy-4-oxo-3-quinolinecarboxylic Acid Anhydride with Diacetyl Borate

CAS: 139678-43-6

In Stock>95%

Darifenacin Impurity D structure

Darifenacin Impurity D

CAS: 1396968-57-2

In Stock97%+

Gemcitabine Impurity 18 structure

Gemcitabine Impurity 18

CAS: 139729-89-8

In Stock97%+

Albendazole Impurity N78 structure

Albendazole Impurity N78

CAS: 139751-05-6

In Stock97%+

Sildenafil Impurity N2 structure

Sildenafil Impurity N2

CAS: 139756-04-0

In Stock97%+

Simvastatin EP Impurity A Ammonium Salt structure

Simvastatin EP Impurity A Ammonium Salt

CAS: 139893-43-9

In Stock97%+

Methylfluorophenyl Boronic Acid Impurity Certified Reference Standard structure

Methylfluorophenyl Boronic Acid Impurity Certified Reference Standard

CAS: 139911-29-8

In Stock97%+

Hydroxychloroquine Impurity 18 structure

Hydroxychloroquine Impurity 18

CAS: 140-80-7

In Stock97%+

Oxeladin Hydrogen Citrate EP Impurity A structure

Oxeladin Hydrogen Citrate EP Impurity A

CAS: 140-82-9

In Stock97%+

Ezetimibe Impurity 1 Sodium salt structure

Ezetimibe Impurity 1 Sodium salt

CAS: 1400989-75-4

In Stock97%+

Valganciclovir Impurity 1 (S, S-Isovalganciclovir Impurity) structure

Valganciclovir Impurity 1 (S, S-Isovalganciclovir Impurity)

CAS: 1401562-13-7

In Stock97%+

Ganciclovir - Impurity N (Freebase) structure

Ganciclovir - Impurity N (Freebase)

CAS: 1401661-95-7

In Stock97%+

Crizotinib Impurity N12 structure

Crizotinib Impurity N12

CAS: 1401697-46-8

In Stock97%+

2-(((3aR,4S,6R,6aS)-6-(7-(((1S,2R)-2-(3,4-Difluorophenyl)cyclopropyl)amino)-5-(propylthio)-3H-[1,2,3]triazolo[4,5-d]pyrimidin-3-yl)-2,2-dimethyltetrahydro-4H-cyclopenta[d][1,3]dioxol-4-yl)oxy)acetic acid (Ticagrelor Impurity) structure

2-(((3aR,4S,6R,6aS)-6-(7-(((1S,2R)-2-(3,4-Difluorophenyl)cyclopropyl)amino)-5-(propylthio)-3H-[1,2,3]triazolo[4,5-d]pyrimidin-3-yl)-2,2-dimethyltetrahydro-4H-cyclopenta[d][1,3]dioxol-4-yl)oxy)acetic acid (Ticagrelor Impurity)

CAS: 1402150-34-8

In Stock97%+

Beflubutamid Impurity 2 structure

Beflubutamid Impurity 2

CAS: 1402164-94-6

In Stock97%+

Xylometazoline EP Impurity E Ethylenediamine Salt structure

Xylometazoline EP Impurity E Ethylenediamine Salt

CAS: 14034-59-4

In Stock97%+

Atorvastatin Impurity N5 structure

Atorvastatin Impurity N5

CAS: 1403667-07-1

In Stock97%+

Jaboticabin Ethyl Impurity structure

Jaboticabin Ethyl Impurity

CAS: 1404192-74-0

In Stock97%+

Lurasidone Impurity N87 structure

Lurasidone Impurity N87

CAS: 140459-96-7

In Stock97%+

Cytarabine Impurity 2 structure

Cytarabine Impurity 2

CAS: 14057-18-2

In Stock97%+

Sertraline Impurity C49 structure

Sertraline Impurity C49

CAS: 140631-53-4

In Stock97%+

Disulfiram Impurity 1 structure

Disulfiram Impurity 1

CAS: 140703-15-7

In Stock97%+

1,4-Bis(4-carboxybenzyl)-1-methylpiperazin-1-ium (Imatinib Impurity) structure

1,4-Bis(4-carboxybenzyl)-1-methylpiperazin-1-ium (Imatinib Impurity)

CAS: 1407229-73-5

In Stock97%+

Relcovaptan Impurity 1 structure

Relcovaptan Impurity 1

CAS: 140916-61-6

In Stock97%+

Ketorolac 2-Benzoylpyrrole Iodo Impurity structure

Ketorolac 2-Benzoylpyrrole Iodo Impurity

CAS: 141031-77-8

In Stock97%+

Voriconazole Impurity 59 structure

Voriconazole Impurity 59

CAS: 141060-00-6

In Stock97%+

3,7-Dimethyl-2-((5-oxohexyl)oxy)-3,7-dihydro-6H-purin-6-one (Pentoxifylline impurity) structure

3,7-Dimethyl-2-((5-oxohexyl)oxy)-3,7-dihydro-6H-purin-6-one (Pentoxifylline impurity)

CAS: 1410913-79-9

In Stock97%+

Lacosamide Impurity C35 structure

Lacosamide Impurity C35

CAS: 141108-78-3

In Stock97%+

Clopidogrel Impurity 5 structure

Clopidogrel Impurity 5

CAS: 141109-16-2

In Stock97%+

Clopidogrel Thienylthyl Impurity structure

Clopidogrel Thienylthyl Impurity

CAS: 141109-20-8

In Stock97%+

Posaconazole Impurity 58 structure

Posaconazole Impurity 58

CAS: 141113-36-2

In Stock97%+

Granisetron EP Impurity C Hydrochloride structure

Granisetron EP Impurity C Hydrochloride

CAS: 141136-01-8

In Stock>95%

Migalastat Impurity 1 (Lucerastat) structure

Migalastat Impurity 1 (Lucerastat)

CAS: 141206-42-0

In Stock97%+

Tryptophan Impurity 9 structure

Tryptophan Impurity 9

CAS: 141215-69-2

In Stock97%+

Roflumilast Impurity C51 structure

Roflumilast Impurity C51

CAS: 1412448-29-3

In Stock97%+

Azacitidine Impurity 37 structure

Azacitidine Impurity 37

CAS: 141344-03-8

In Stock97%+

Ethyl 2-((5-bromopyridin-2-yl)amino)-2-oxoacetate (Edoxaban Impurity) structure

Ethyl 2-((5-bromopyridin-2-yl)amino)-2-oxoacetate (Edoxaban Impurity)

CAS: 141354-54-3

In Stock97%+

Hydroxychloroquine EP Impurity C Oxalate structure

Hydroxychloroquine EP Impurity C Oxalate

CAS: 14142-64-4

In Stock97%+

Lamivudine Impurity B structure

Lamivudine Impurity B

CAS: 141434-39-1

In Stock97%+

Pazopanib Impurity N7 structure

Pazopanib Impurity N7

CAS: 1414375-50-0

In Stock97%+

tert-Butyl ((2S,4R,5S)-5-amino-4-hydroxy-1,6-diphenylhexan-2-yl)carbamate (Ritonavir Impurity ) structure

tert-Butyl ((2S,4R,5S)-5-amino-4-hydroxy-1,6-diphenylhexan-2-yl)carbamate (Ritonavir Impurity )

CAS: 1414933-83-7

In Stock97%+

tert-Butyl ((2R,4R,5S)-5-amino-4-hydroxy-1,6-diphenylhexan-2-yl)carbamate (Ritonavir Impurity ) structure

tert-Butyl ((2R,4R,5S)-5-amino-4-hydroxy-1,6-diphenylhexan-2-yl)carbamate (Ritonavir Impurity )

CAS: 1414933-85-9

In Stock97%+

Fasudil Impurity 9 structure

Fasudil Impurity 9

CAS: 141519-77-9

In Stock97%+

Binimetinib Impurity N1 structure

Binimetinib Impurity N1

CAS: 1415559-75-9

In Stock95%

Binimetinib Impurity N2 structure

Binimetinib Impurity N2

CAS: 1415559-93-1

In Stock95%

Cinnarizine EP Impurity D structure

Cinnarizine EP Impurity D

CAS: 1415587-79-9

In Stock97%+

Clomifene Citrate - Impurity F (Citrate Salt) structure

Clomifene Citrate - Impurity F (Citrate Salt)

CAS: 14158-75-9

In Stock97%+

Carbinoxamine Impurity B structure

Carbinoxamine Impurity B

CAS: 14159-57-0

In Stock97%+

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