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Pharmaceutical Impurity Reference Standards

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

59,706 products available — showing first 8,000

Duloxetine Impurity C12 Oxalate structure

Duloxetine Impurity C12 Oxalate

CAS: 116817-26-6

In Stock97%+

Rac-Duloxetine EP Impurity F structure

Rac-Duloxetine EP Impurity F

CAS: 116817-27-7

In Stock97%+

Mitapivat Impurity N37 structure

Mitapivat Impurity N37

CAS: 116834-64-1

In Stock97%+

Ceftolozane Impurity N2 structure

Ceftolozane Impurity N2

CAS: 116856-12-3

In Stock97%+

Naproxen EP Impurity D structure

Naproxen EP Impurity D

CAS: 116883-61-5

In Stock97%+

Testosterone Isocaproate EP Impurity D structure

Testosterone Isocaproate EP Impurity D

CAS: 1169-49-9

In Stock97%+

Atomoxetine Impurity 14 HCl structure

Atomoxetine Impurity 14 HCl

CAS: 116939-14-1

In Stock97%+

Sitagliptin Impurity 97 structure

Sitagliptin Impurity 97

CAS: 1169707-29-2

In Stock97%+

Vericiguat Impurity structure

Vericiguat Impurity

CAS: 117007-52-0

In Stock95%

Aaptamine Impurity 6 structure

Aaptamine Impurity 6

CAS: 117173-75-8

In Stock97%+

Chlormadinone Acetate EP Impurity F structure

Chlormadinone Acetate EP Impurity F

CAS: 1172-82-3

In Stock97%+

Mexiletine Impurity N5 structure

Mexiletine Impurity N5

CAS: 117322-90-4

In Stock97%+

Mexiletine impurity N1 structure

Mexiletine impurity N1

CAS: 117322-92-6

In Stock97%+

Gemcitabine Impurity 16 structure

Gemcitabine Impurity 16

CAS: 1173824-58-2

In Stock97%+

Dexamethasone Impurity 17 structure

Dexamethasone Impurity 17

CAS: CATO-C1091485

In Stock>95%

Methadone Impurity 6 structure

Methadone Impurity 6

CAS: 117449-78-2

In Stock97%+

Cilastatin Sodium - Impurity G structure

Cilastatin Sodium - Impurity G

CAS: 1174657-12-5

In Stock97%+

2-Chloro Rasagiline Impurity structure

2-Chloro Rasagiline Impurity

CAS: 1175018-73-1

In Stock97%+

Levonorgestrel Acetate Delta-5 Impurity structure

Levonorgestrel Acetate Delta-5 Impurity

CAS: 1175110-92-5

In Stock97%+

Efinaconazole Impurity 9 structure

Efinaconazole Impurity 9

CAS: 1175536-50-1

In Stock97%+

Centaureidin Impurity 1 structure

Centaureidin Impurity 1

CAS: 1176-88-1

In Stock97%+

Carnitine Chloride Impurity 3 structure

Carnitine Chloride Impurity 3

CAS: 117604-42-9

In Stock97%+

Levocetirizine Dihydrochloride - Impurity H (Hydrochloride Salt) structure

Levocetirizine Dihydrochloride - Impurity H (Hydrochloride Salt)

CAS: 1177093-13-8

In Stock97%+

Ganirelix Impurity 1 structure

Ganirelix Impurity 1

CAS: 117766-00-4

In Stock97%+

Desloratadine Dehydro 11-Oxo Impurity structure

Desloratadine Dehydro 11-Oxo Impurity

CAS: 117811-16-2

In Stock97%+

5,6-Dehydro-N-methyl Desloratadine structure

5,6-Dehydro-N-methyl Desloratadine

CAS: 117811-18-4

In Stock>95%

Norepinephrine Impurity 28 structure

Norepinephrine Impurity 28

CAS: 117883-03-1

In Stock97%+

Pregabalin Impurity 65 structure

Pregabalin Impurity 65

CAS: 117957-62-7

In Stock97%+

Rabeprazole Impurity 35 structure

Rabeprazole Impurity 35

CAS: 117977-20-5

In Stock97%+

Chlortalidone Impurity 4 structure

Chlortalidone Impurity 4

CAS: 118-04-7

In Stock97%+

Finasteride Impurity N89 structure

Finasteride Impurity N89

CAS: 1180488-92-9

In Stock97%+

Acebutolol Impurity 16 structure

Acebutolol Impurity 16

CAS: 1180584-47-7

In Stock97%+

Asenapine Impurity 9 structure

Asenapine Impurity 9

CAS: 1180843-76-8

In Stock97%+

Bilastine Impurity N19 structure

Bilastine Impurity N19

CAS: 1181267-30-0

In Stock>95%

Bifendate Impurity A structure

Bifendate Impurity A

CAS: 1181519-47-0

In Stock97%+

Prasugrel Impurity 40 structure

Prasugrel Impurity 40

CAS: 1181569-67-4

In Stock97%+

Rabeprazole Impurity 24 structure

Rabeprazole Impurity 24

CAS: 118175-10-3

In Stock97%+

Etoricoxib Impurity 37 structure

Etoricoxib Impurity 37

CAS: 118362-28-0

In Stock97%+

Benidipine Impurity N1 structure

Benidipine Impurity N1

CAS: 118431-03-1

In Stock97%+

Frovatriptan 2-Hydrazinylbenzamide Impurity structure

Frovatriptan 2-Hydrazinylbenzamide Impurity

CAS: 1184472-52-3

In Stock97%+

Acotiamide Impurity M structure

Acotiamide Impurity M

CAS: 118452-02-1

In Stock97%+

Zoledronic Acid EP Impurity D-13C2-15N2 structure

Zoledronic Acid EP Impurity D-13C2-15N2

CAS: 1184983-00-3

In Stock97%+

Nortriptyline EP Impurity E-D3 HCl structure

Nortriptyline EP Impurity E-D3 HCl

CAS: 1184983-42-3

In Stock97%+

Lansoprazole EP Impurity B-D4 structure

Lansoprazole EP Impurity B-D4

CAS: 1184999-77-6

In Stock97%+

Famotidine impurity 01 structure

Famotidine impurity 01

CAS: 1185040-73-6

In Stock97%+

Terbinafine Impurity 5-d7 structure

Terbinafine Impurity 5-d7

CAS: 1185238-58-7

In Stock97%+

Ranolazine Impurity 20 DiHCl structure

Ranolazine Impurity 20 DiHCl

CAS: 1185293-30-4

In Stock97%+

Bufexamac impurity C CRS structure

Bufexamac impurity C CRS

CAS: 1185726-73-1

In Stock97%+

Anastrozole Impurity N2 structure

Anastrozole Impurity N2

CAS: 1186102-55-5

In Stock97%+

Vilazodone Impurity 13 structure

Vilazodone Impurity 13

CAS: 1186225-86-4

In Stock97%+

Dabigatran Impurity 8 Hydrochloride structure

Dabigatran Impurity 8 Hydrochloride

CAS: 1187067-68-0

In Stock97%+

Melatonin 2-Chloro impurity structure

Melatonin 2-Chloro impurity

CAS: 118747-02-7

In Stock97%+

Baricitinib Impurity N1 structure

Baricitinib Impurity N1

CAS: 1187595-88-5

In Stock97%+

Lansoprazole Impurity 26 structure

Lansoprazole Impurity 26

CAS: 1187926-85-7

In Stock97%+

Dabigatran Impurity C structure

Dabigatran Impurity C

CAS: 1188263-64-0

In Stock97%+

rac-Levomepromazine EP Impurity B (rac-Levomepromazine S-Oxide) structure

rac-Levomepromazine EP Impurity B (rac-Levomepromazine S-Oxide)

CAS: 1188265-45-3

In Stock97%+

Mirtazapine EP Impurity D-d4 HCl (N-Desmethyl Mirtazapine-d4 HCl) structure

Mirtazapine EP Impurity D-d4 HCl (N-Desmethyl Mirtazapine-d4 HCl)

CAS: 1188266-12-7

In Stock97%+

Budesonide Impurity 01 structure

Budesonide Impurity 01

CAS: 1188271-73-9

In Stock97%+

Semaglutide impurity 29 structure

Semaglutide impurity 29

CAS: 1188328-22-4

In Stock97%+

Piroxicam O-Isopropyl Impurity structure

Piroxicam O-Isopropyl Impurity

CAS: 118854-49-2

In Stock97%+

Primidone EP Impurity F structure

Primidone EP Impurity F

CAS: 1189504-46-8

In Stock97%+

Chloridazon Impurity 1-15N2 structure

Chloridazon Impurity 1-15N2

CAS: 1189649-21-5

In Stock97%+

Flavoxate EP Impurity A-d5 (Flavoxate USP Related Compound A-d5) structure

Flavoxate EP Impurity A-d5 (Flavoxate USP Related Compound A-d5)

CAS: 1189883-79-1

In Stock97%+

Ranitidine-d6 Impurity B structure

Ranitidine-d6 Impurity B

CAS: 1189903-94-3

In Stock97%+

Amiodarone EP Impurity B D4 HCl structure

Amiodarone EP Impurity B D4 HCl

CAS: 1189960-80-2

In Stock>95%

Dapsone Impurity N8 structure

Dapsone Impurity N8

CAS: 119-59-5

In Stock>95%

Axitinib Impurity N24 structure

Axitinib Impurity N24

CAS: 119-80-2

In Stock97%+

Glimepiride Impurity 9 structure

Glimepiride Impurity 9

CAS: 119043-16-2

In Stock97%+

Bexarotene Fluoro Impurity structure

Bexarotene Fluoro Impurity

CAS: 1190848-23-7

In Stock97%+

Valganciclovir EP Impurity O structure

Valganciclovir EP Impurity O

CAS: 119089-68-8

In Stock97%+

Edoxaban Impurity N8 HCl structure

Edoxaban Impurity N8 HCl

CAS: 1190971-73-3

In Stock97%+

Umeclidinium Bromide Impurity 25 structure

Umeclidinium Bromide Impurity 25

CAS: 119102-52-2

In Stock97%+

Atazanavir Impurity 39 structure

Atazanavir Impurity 39

CAS: 1191091-65-2

In Stock97%+

Rizatriptan Impurity 12 structure

Rizatriptan Impurity 12

CAS: 119192-09-5

In Stock97%+

Rizatriptan Impurity 11 structure

Rizatriptan Impurity 11

CAS: 119192-10-8

In Stock97%+

Alvimopan Impurity 27 structure

Alvimopan Impurity 27

CAS: 119193-19-0

In Stock97%+

Dorzagliatin Impurity N98 structure

Dorzagliatin Impurity N98

CAS: 1191996-10-7

In Stock97%+

3-(3-Iodopropyl)-7,8-dimethoxy-1,3,4,5-tetrahydro-2H-benzo[d]azepin-2-one (Ivabradine Impurity) structure

3-(3-Iodopropyl)-7,8-dimethoxy-1,3,4,5-tetrahydro-2H-benzo[d]azepin-2-one (Ivabradine Impurity)

CAS: 1192174-73-4

In Stock97%+

Aminoglutethimide impurity D structure

Aminoglutethimide impurity D

CAS: 119229-88-8

In Stock97%+

Avibactam Impurity 02 structure

Avibactam Impurity 02

CAS: 1192500-31-4

In Stock97%+

Phloroglucinol Impurity 50 structure

Phloroglucinol Impurity 50

CAS: 119290-91-4

In Stock97%+

Atracurium Impurity 11 structure

Atracurium Impurity 11

CAS: 1193104-79-8

In Stock97%+

Sparfloxacin Fluoro Impurity structure

Sparfloxacin Fluoro Impurity

CAS: 119354-10-8

In Stock97%+

Raltegravir EP Impurity B structure

Raltegravir EP Impurity B

CAS: 1193687-85-2

In Stock97%+

Raltegravir EP Impurity E structure

Raltegravir EP Impurity E

CAS: 1193687-87-4

In Stock97%+

Bupropion impurity 60 structure

Bupropion impurity 60

CAS: 1193779-48-4

In Stock97%+

Bupropion Impurity 02 structure

Bupropion Impurity 02

CAS: 1193779-50-8

In Stock97%+

Sitafloxacin Impurity 27 structure

Sitafloxacin Impurity 27

CAS: 119385-80-7

In Stock97%+

Stigmasterol Impurity 5 structure

Stigmasterol Impurity 5

CAS: 119386-11-7

In Stock97%+

2-Amino-5,6-dichloro-3(4H)-quinazoline Acetic Acid Hydrobromide (Anagrelide Impurity B) structure

2-Amino-5,6-dichloro-3(4H)-quinazoline Acetic Acid Hydrobromide (Anagrelide Impurity B)

CAS: 1194434-39-3

In Stock97%+

Saxagliptin Impurity N52 structure

Saxagliptin Impurity N52

CAS: 1194836-75-3

In Stock97%+

Saxagliptin Cyclic Imidine Impurity structure

Saxagliptin Cyclic Imidine Impurity

CAS: 1194836-77-5

In Stock97%+

Lifitegrast Impurity 39 structure

Lifitegrast Impurity 39

CAS: 1194864-16-8

In Stock97%+

Lifitegrast Impurity N99 structure

Lifitegrast Impurity N99

CAS: 1195655-47-0

In Stock97%+

Dabrafenib Impurity N1 structure

Dabrafenib Impurity N1

CAS: 1195765-47-9

In Stock97%+

Dabrafenib Impurity N2 structure

Dabrafenib Impurity N2

CAS: 1195767-77-1

In Stock97%+

Dabrafenib Impurity N6 structure

Dabrafenib Impurity N6

CAS: 1195768-20-7

In Stock97%+

Dabrafenib Impurity N7 structure

Dabrafenib Impurity N7

CAS: 1195768-23-0

In Stock97%+

Tedizolid impurity N2 structure

Tedizolid impurity N2

CAS: 1195781-15-7

In Stock97%+

Dabrafenib Impurity N11 Na salt structure

Dabrafenib Impurity N11 Na salt

CAS: 1195873-54-1（free base）

In Stock97%+

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