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Pharmaceutical Impurity Reference Standards

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

Thiamine Impurity 11 structure

Thiamine Impurity 11

CAS: 1196-75-4

In Stock97%+

Raloxifene Impurity 13 structure

Raloxifene Impurity 13

CAS: 1196-81-2

In Stock97%+

Flucytosine Impurity 2 structure

Flucytosine Impurity 2

CAS: 1196146-71-0

In Stock97%+

Naloxone Impurity 21 structure

Naloxone Impurity 21

CAS: 119630-94-3

In Stock97%+

Rotigotine Impurity 22 structure

Rotigotine Impurity 22

CAS: 1196459-54-7

In Stock97%+

Testosterone Enantate EP Impurity G structure

Testosterone Enantate EP Impurity G

CAS: 119698-27-0

In Stock97%+

Benzoyl Peroxide Impurity 10 structure

Benzoyl Peroxide Impurity 10

CAS: 1197-42-8

In Stock97%+

Gabapentine Impurity 35 structure

Gabapentine Impurity 35

CAS: 1197-80-4

In Stock97%+

Bempedoic Acid Impurity N4 structure

Bempedoic Acid Impurity N4

CAS: 119703-02-5

In Stock97%+

Ezetimibe Impurity 87 structure

Ezetimibe Impurity 87

CAS: 1197343-07-9

In Stock97%+

Brigatinib Impurity AP26123 structure

Brigatinib Impurity AP26123

CAS: 1197958-75-0

In Stock97%+

Hydroxychloroquine EP Impurity G Hydrochloride structure

Hydroxychloroquine EP Impurity G Hydrochloride

CAS: 1198-39-6

In Stock97%+

Sofosbuvir Impurity 123 structure

Sofosbuvir Impurity 123

CAS: 119804-96-5

In Stock97%+

Pyrroloquinoline Impurity 1 structure

Pyrroloquinoline Impurity 1

CAS: 119825-27-3

In Stock97%+

Oxybutynin Impurity N1 (Mixture of Diastereomers) structure

Oxybutynin Impurity N1 (Mixture of Diastereomers)

CAS: 1199574-71-4

In Stock97%+

Omeprazole Acid Impurity structure

Omeprazole Acid Impurity

CAS: 120003-72-7

In Stock97%+

Bimatoprost Impurity N79 structure

Bimatoprost Impurity N79

CAS: 1201226-16-5

In Stock97%+

Acetazolamide EP Impurity D HCl structure

Acetazolamide EP Impurity D HCl

CAS: 120208-98-2

In Stock97%+

Dorzolamide Impurity 8 structure

Dorzolamide Impurity 8

CAS: 120279-26-7

In Stock97%+

Dorzolamide EP Impurity A HCl structure

Dorzolamide EP Impurity A HCl

CAS: 120279-36-9

In Stock97%+

Imidapril Impurity N1 structure

Imidapril Impurity N1

CAS: 120294-09-9

In Stock97%+

Ampicillin EP Impurity A Sodium Salt structure

Ampicillin EP Impurity A Sodium Salt

CAS: 1203-85-6

In Stock97%+

Niraparib Impurity N9 structure

Niraparib Impurity N9

CAS: 1203683-54-8

In Stock97%+

Niraparib Impurity N3 structure

Niraparib Impurity N3

CAS: 1203686-41-2

In Stock97%+

Ropinirole Impurity 3 structure

Ropinirole Impurity 3

CAS: 120427-94-3

In Stock97%+

Ropinirole Impurity 12 structure

Ropinirole Impurity 12

CAS: 120427-95-4

In Stock97%+

Ropinirole Impurity 17 structure

Ropinirole Impurity 17

CAS: 120427-96-5

In Stock97%+

Dextromethorphan Impurity 3-methoxy-17-methyl-morphinan-10β-ol Formic acid structure

Dextromethorphan Impurity 3-methoxy-17-methyl-morphinan-10β-ol Formic acid

CAS: 120442-81-1（free base）

In Stock>95%

Olprinone Impurity 10 structure

Olprinone Impurity 10

CAS: 1204742-76-6

In Stock97%+

Anastrozole Impurity 2 structure

Anastrozole Impurity 2

CAS: 120512-36-9

In Stock97%+

Anastrozole Impurity 3 structure

Anastrozole Impurity 3

CAS: 120512-37-0

In Stock97%+

Allisartan Isoproxil Impurity N1 structure

Allisartan Isoproxil Impurity N1

CAS: 120568-18-5

In Stock97%+

Palonosetron Impurity 7 structure

Palonosetron Impurity 7

CAS: 120570-05-0

In Stock97%+

Montelukast Impurity 11 structure

Montelukast Impurity 11

CAS: 120578-04-3

In Stock97%+

Probenecid Impurity 4 structure

Probenecid Impurity 4

CAS: 1206-37-7

In Stock97%+

Carvedilol Impurity 11 HCl structure

Carvedilol Impurity 11 HCl

CAS: 120606-08-8

In Stock97%+

Ivabradine Impurity 28 structure

Ivabradine Impurity 28

CAS: 1206230-28-5

In Stock97%+

Olopatadine Impurity N2 structure

Olopatadine Impurity N2

CAS: 1206456-44-1

In Stock97%+

Tofacitinib Impurity 200 structure

Tofacitinib Impurity 200

CAS: 1206824-85-2

In Stock97%+

Tofacitinib Impurity N2 structure

Tofacitinib Impurity N2

CAS: 1206825-36-6

In Stock97%+

Prochlorperazine Impurity 13 structure

Prochlorperazine Impurity 13

CAS: 1207-99-4

In Stock97%+

Talazoparib Impurity N20 structure

Talazoparib Impurity N20

CAS: 1207456-00-5

In Stock97%+

Favipiravir Impurity 21 structure

Favipiravir Impurity 21

CAS: 1207609-52-6

In Stock97%+

Favipiravir Impurity 32 structure

Favipiravir Impurity 32

CAS: 1207614-48-9

In Stock97%+

Fluvastatin EP Impurity F structure

Fluvastatin EP Impurity F

CAS: 1207963-21-0

In Stock97%+

Ceftiofur Impurity 5 structure

Ceftiofur Impurity 5

CAS: 120882-25-9

In Stock97%+

Ceftiofur Impurity 12 structure

Ceftiofur Impurity 12

CAS: 120905-00-2

In Stock97%+

Alogliptin Impurity 38 structure

Alogliptin Impurity 38

CAS: 120977-94-8

In Stock97%+

Phloroglucinol Impurity 16 structure

Phloroglucinol Impurity 16

CAS: 120991-47-1

In Stock97%+

Nortriptyline EP Impurity I structure

Nortriptyline EP Impurity I

CAS: 1210-34-0

In Stock97%+

Penbutolol EP Impurity A Racemate structure

Penbutolol EP Impurity A Racemate

CAS: 121010-10-4

In Stock97%+

Lesinurad Impurity E structure

Lesinurad Impurity E

CAS: 1210330-64-5

In Stock97%+

Ketorolac Impurity 24 structure

Ketorolac Impurity 24

CAS: 121034-76-2

In Stock97%+

Ertugliflozin impurity 02 structure

Ertugliflozin impurity 02

CAS: 1210344-83-4

In Stock97%+

Edoxaban Impurity 47 structure

Edoxaban Impurity 47

CAS: 1210348-16-5

In Stock97%+

Metoclopramide-related Impurity structure

Metoclopramide-related Impurity

CAS: 121048-67-7

In Stock97%+

Aztreonam Impurity 20 structure

Aztreonam Impurity 20

CAS: 121054-30-6

In Stock97%+

Epinastine Impurity 6 structure

Epinastine Impurity 6

CAS: 1211-06-9

In Stock97%+

Omarigliptin Impurity 1 structure

Omarigliptin Impurity 1

CAS: 1211594-55-6

In Stock97%+

Levofloxacin Impurity 03 structure

Levofloxacin Impurity 03

CAS: 1213269-49-8

In Stock97%+

Dimetindene Impurity 10 structure

Dimetindene Impurity 10

CAS: 121379-67-7

In Stock97%+

Codeinone Impurity 2 structure

Codeinone Impurity 2

CAS: 121395-47-9

In Stock97%+

Cefprozil Impurity N1(Z-Cefprozil) structure

Cefprozil Impurity N1(Z-Cefprozil)

CAS: 121412-77-9

In Stock97%+

Linezolid Impurity 11 structure

Linezolid Impurity 11

CAS: 1215006-08-8

In Stock97%+

Linezolid Impurity 12 structure

Linezolid Impurity 12

CAS: 1215006-11-3

In Stock97%+

*Barbital Impurity 2 (Secbutabarbital)-d5 structure

*Barbital Impurity 2 (Secbutabarbital)-d5

CAS: 1215565-64-2

In Stock97%+

Danazol Impurity 13 structure

Danazol Impurity 13

CAS: 121565-23-9

In Stock97%+

Tamsulosin Impurity 7 structure

Tamsulosin Impurity 7

CAS: 121565-95-5

In Stock97%+

Simvastatin Impurity I structure

Simvastatin Impurity I

CAS: 121624-18-8

In Stock97%+

Verapamil EP Impurity J-D7 HCl structure

Verapamil EP Impurity J-D7 HCl

CAS: 1216413-74-9

In Stock97%+

Erlotinib Impurity 118 structure

Erlotinib Impurity 118

CAS: 1216420-11-9

In Stock97%+

Amoxapine Impurity 1 structure

Amoxapine Impurity 1

CAS: 1216608-66-0

In Stock97%+

Lansoprazole EP Impurity C-D4 structure

Lansoprazole EP Impurity C-D4

CAS: 1216682-38-0

In Stock97%+

Lidocaine EP Impurity D-d6 structure

Lidocaine EP Impurity D-d6

CAS: 1216698-89-3

In Stock97%+

Naratriptan Impurity N6 structure

Naratriptan Impurity N6

CAS: 121679-20-7

In Stock97%+

Ondansetron Impurity 13 structure

Ondansetron Impurity 13

CAS: 1216890-42-4

In Stock97%+

Promethazine Impurity 2 structure

Promethazine Impurity 2

CAS: 1217-37-4

In Stock97%+

Etacrynic Acid EP Impurity A structure

Etacrynic Acid EP Impurity A

CAS: 1217-67-0

In Stock97%+

Fluvoxamine EP Impurity A structure

Fluvoxamine EP Impurity A

CAS: 1217216-82-4

In Stock97%+

Ramelteon Impurity 13 structure

Ramelteon Impurity 13

CAS: 1217272-33-7

In Stock97%+

Gemcitabine Impurity 10 structure

Gemcitabine Impurity 10

CAS: 1217452-91-9

In Stock97%+

Methotrexate Hydrate EP Impurity B structure

Methotrexate Hydrate EP Impurity B

CAS: 1217459-90-9

In Stock97%+

Alogliptin Impurity 16 structure

Alogliptin Impurity 16

CAS: 1217476-03-3

In Stock97%+

Haloperidol impurity 02 structure

Haloperidol impurity 02

CAS: 121751-79-9

In Stock97%+

Bicalutamide Impurity 26 structure

Bicalutamide Impurity 26

CAS: 1217519-01-1

In Stock97%+

Bicalutamide Impurity 25 structure

Bicalutamide Impurity 25

CAS: 1217546-57-0

In Stock97%+

Zolmitriptan EP Impurity G-d3 structure

Zolmitriptan EP Impurity G-d3

CAS: 1217623-11-4

In Stock97%+

Efavirenz Impurity (6-chloro-4-[2-(2-methylcyclopropyl)ethynyl]-4-(trifluoromethyl)-2H-3,1-benzoxazin-2-one) structure

Efavirenz Impurity (6-chloro-4-[2-(2-methylcyclopropyl)ethynyl]-4-(trifluoromethyl)-2H-3,1-benzoxazin-2-one)

CAS: 1217623-65-8

In Stock97%+

Adamantane Impurity 6 structure

Adamantane Impurity 6

CAS: 121768-37-4

In Stock97%+

Atomoxetine EP Impurity B-D3 HCl structure

Atomoxetine EP Impurity B-D3 HCl

CAS: 1217703-95-1

In Stock97%+

Liothyronine Impurity 2 structure

Liothyronine Impurity 2

CAS: 1217733-23-7

In Stock97%+

Citalopram Impurity 23 structure

Citalopram Impurity 23

CAS: 1217846-85-9

In Stock97%+

Sitagliptin Impurity 72 structure

Sitagliptin Impurity 72

CAS: 1217854-08-4

In Stock97%+

Cinitapride Impurity 1 structure

Cinitapride Impurity 1

CAS: 121873-04-9

In Stock97%+

Rivaroxaban Impurity 85 structure

Rivaroxaban Impurity 85

CAS: 1218777-30-0

In Stock97%+

Famphur Impurity 3 structure

Famphur Impurity 3

CAS: 122-17-8

In Stock97%+

Promethazine Impurity 1 structure

Promethazine Impurity 1

CAS: 1220-99-1

In Stock97%+

Tadalafil Impurity N1 structure

Tadalafil Impurity N1

CAS: 1220393-12-3

In Stock97%+

Tedizolid Impurity 10 structure

Tedizolid Impurity 10

CAS: 1220910-90-6

In Stock97%+

Bendamustine Impurity 10 structure

Bendamustine Impurity 10

CAS: 1221157-18-1

In Stock97%+

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