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Pharmaceutical Impurity Reference Standards

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

Butylphthalide Impurity N4 structure

Butylphthalide Impurity N4

CAS: 168288-19-5

In Stock97%+

Ezetimibe Impurity 79 structure

Ezetimibe Impurity 79

CAS: 1683564-73-9

In Stock97%+

Voriconazole Impurity N2 structure

Voriconazole Impurity N2

CAS: 168479-96-7

In Stock97%+

Eltrombopag Impurity 30 structure

Eltrombopag Impurity 30

CAS: 168618-47-1

In Stock97%+

Peramivir Impurity 71 structure

Peramivir Impurity 71

CAS: 168683-02-1

In Stock97%+

Edaravone Impurity N2 structure

Edaravone Impurity N2

CAS: 168848-20-2

In Stock97%+

Racecadotril Impurity 3 structure

Racecadotril Impurity 3

CAS: 16890-80-5

In Stock97%+

Meclozine Hydrochloride EP Impurity E structure

Meclozine Hydrochloride EP Impurity E

CAS: 16896-82-5

In Stock97%+

Abacavir Impurity 2 structure

Abacavir Impurity 2

CAS: 168960-19-8

In Stock97%+

Fexofenadine Impurity N22 structure

Fexofenadine Impurity N22

CAS: 169032-11-5

In Stock97%+

Hydrocortisone Impurity 16 structure

Hydrocortisone Impurity 16

CAS: 1691250-97-1

In Stock97%+

Fexofenadine Impurity 2 structure

Fexofenadine Impurity 2

CAS: 169280-21-1

In Stock97%+

Fexofenadine Impurity 23 structure

Fexofenadine Impurity 23

CAS: 169280-25-5

In Stock97%+

Formoterol Impurity I structure

Formoterol Impurity I

CAS: 169375-55-7

In Stock97%+

Trimetazidine Impurity 12 structure

Trimetazidine Impurity 12

CAS: 169506-15-4

In Stock97%+

Moxifloxacin Impurity 64 structure

Moxifloxacin Impurity 64

CAS: 169507-61-3

In Stock97%+

Moxifloxacin Impurity 29 structure

Moxifloxacin Impurity 29

CAS: 169533-56-6

In Stock97%+

Tenofovir alafenamide impurity N1 structure

Tenofovir alafenamide impurity N1

CAS: 16958-60-4

In Stock97%+

Sotalol EP Impurity A HCl structure

Sotalol EP Impurity A HCl

CAS: 16974-44-0

In Stock97%+

Lafutidine Impurity 8 structure

Lafutidine Impurity 8

CAS: 169899-15-4

In Stock97%+

Pantoprazole related impurity G structure

Pantoprazole related impurity G

CAS: 169905-10-6

In Stock97%+

Propafenone Impurity 30 structure

Propafenone Impurity 30

CAS: 17002-31-2

In Stock97%+

Uracil Impurity 4 structure

Uracil Impurity 4

CAS: 17014-74-3

In Stock97%+

Ketoconazole Impurity 14 structure

Ketoconazole Impurity 14

CAS: 170210-50-1

In Stock97%+

Dapoxetine Impurity 51 structure

Dapoxetine Impurity 51

CAS: 170564-98-4

In Stock97%+

Deracoxib Impurity 2 structure

Deracoxib Impurity 2

CAS: 170570-77-1

In Stock97%+

Avanafil Impurity 54 structure

Avanafil Impurity 54

CAS: 1706458-94-7

In Stock97%+

Memantine Impurity 37 structure

Memantine Impurity 37

CAS: 17071-62-4

In Stock97%+

Simethicone Impurity 1 structure

Simethicone Impurity 1

CAS: 17082-47-2

In Stock97%+

Isometheptene BP Impurity E (HCl) structure

Isometheptene BP Impurity E (HCl)

CAS: 17086-16-7

In Stock97%+

Posaconazole Impurity 33 structure

Posaconazole Impurity 33

CAS: 170985-85-0

In Stock97%+

Tedizolid Impurity 46 structure

Tedizolid Impurity 46

CAS: 171018-16-9

In Stock97%+

Telmisartan Impurity 7 structure

Telmisartan Impurity 7

CAS: 17103-25-2

In Stock97%+

Morpholine Impurity 6 structure

Morpholine Impurity 6

CAS: 1710761-54-8

In Stock97%+

Decitabine Impurity 3 structure

Decitabine Impurity 3

CAS: 17117-72-5

In Stock97%+

Amidotrizoate EP Impurity A structure

Amidotrizoate EP Impurity A

CAS: 1713-07-1

In Stock97%+

Aprepitant impurity 01 structure

Aprepitant impurity 01

CAS: 171338-27-5

In Stock97%+

Haloperidol Impurity 13 structure

Haloperidol Impurity 13

CAS: 17135-46-5

In Stock97%+

Zileuton Impurity A structure

Zileuton Impurity A

CAS: 171370-49-3

In Stock97%+

Promazine EP Impurity B structure

Promazine EP Impurity B

CAS: 17140-12-4

In Stock97%+

Dithranol EP Impurity D structure

Dithranol EP Impurity D

CAS: 1715-81-7

In Stock>95%

Zolmitriptan Impurity 7 structure

Zolmitriptan Impurity 7

CAS: 171550-12-2

In Stock97%+

Tadalafil Impurity 54 structure

Tadalafil Impurity 54

CAS: 171596-32-0

In Stock97%+

Lacosamide EP Impurity F (S-Isomer) structure

Lacosamide EP Impurity F (S-Isomer)

CAS: 171623-03-3

In Stock97%+

Revefenacin Impurity N1 structure

Revefenacin Impurity N1

CAS: 171723-80-1

In Stock97%+

Cyproterone Acetate EP Impurity E structure

Cyproterone Acetate EP Impurity E

CAS: 17184-05-3

In Stock97%+

Telmisartan Impurity N3 structure

Telmisartan Impurity N3

CAS: 171863-96-0

In Stock97%+

Abacavir Impurity 7 structure

Abacavir Impurity 7

CAS: 171887-02-8

In Stock97%+

Temazepam EP Impurity D structure

Temazepam EP Impurity D

CAS: 17191-70-7

In Stock97%+

Acetylcholine EP Impurity B HCl structure

Acetylcholine EP Impurity B HCl

CAS: 17210-49-0

In Stock97%+

Cefazedone Impurity 16 structure

Cefazedone Impurity 16

CAS: 17228-71-6

In Stock97%+

Medetomidine Impurity 30 structure

Medetomidine Impurity 30

CAS: 172498-90-7

In Stock97%+

Xylulose Impurity 4 structure

Xylulose Impurity 4

CAS: 172510-30-4

In Stock97%+

Estratetraenol Impurity 2 structure

Estratetraenol Impurity 2

CAS: 17253-36-0

In Stock97%+

Armodafinil Impurity 1 structure

Armodafinil Impurity 1

CAS: 1726-02-9

In Stock97%+

Alogliptin Impurity 4 structure

Alogliptin Impurity 4

CAS: 172603-05-3

In Stock97%+

Bestatin Impurity 4 HCl structure

Bestatin Impurity 4 HCl

CAS: 17279-30-0

In Stock97%+

Pregabalin Impurity 27 structure

Pregabalin Impurity 27

CAS: 172796-26-8

In Stock97%+

Carisoprodol Isopropyl Impurity structure

Carisoprodol Isopropyl Impurity

CAS: 1729-14-2

In Stock97%+

Acenocoumarol Impurity 10 structure

Acenocoumarol Impurity 10

CAS: 17298-36-1

In Stock97%+

Chlorpromazine Impurity 6 structure

Chlorpromazine Impurity 6

CAS: 1730-46-7

In Stock97%+

Levonorgestrel Impurity 12 (6-Methoxy-1,2,3,4-tetrahydronaphthalene) structure

Levonorgestrel Impurity 12 (6-Methoxy-1,2,3,4-tetrahydronaphthalene)

CAS: 1730-48-9

In Stock97%+

Temazepam Impurity 8 structure

Temazepam Impurity 8

CAS: 17311-35-2

In Stock97%+

Terbinafine Impurity 15 structure

Terbinafine Impurity 15

CAS: 173200-56-1

In Stock>95%

Fasudil Impurity 63 structure

Fasudil Impurity 63

CAS: 1733-97-7

In Stock97%+

Benzoic Acid Diazonium Impurity structure

Benzoic Acid Diazonium Impurity

CAS: 17333-88-9

In Stock97%+

Aliskiren Impurity 1 structure

Aliskiren Impurity 1

CAS: 173336-76-0

In Stock97%+

Tinidazole Impurity 14 structure

Tinidazole Impurity 14

CAS: 173336-82-8

In Stock97%+

Tilorone Impurity 1 HCl structure

Tilorone Impurity 1 HCl

CAS: 1734-90-3

In Stock97%+

Fentanyl Impurity 2 structure

Fentanyl Impurity 2

CAS: 173406-18-3

In Stock97%+

Haloperidol Impurity 01 HCl structure

Haloperidol Impurity 01 HCl

CAS: 173447-88-6

In Stock97%+

Orphenadrine EP Impurity C structure

Orphenadrine EP Impurity C

CAS: 17349-96-1

In Stock97%+

Valproic Acid Impurity 75 structure

Valproic Acid Impurity 75

CAS: 1735-09-7

In Stock97%+

Lamivudine EP impurity A structure

Lamivudine EP impurity A

CAS: 173602-25-0

In Stock97%+

Tranylcypromine Impurity 2 structure

Tranylcypromine Impurity 2

CAS: 17364-52-2

In Stock97%+

Amylmetacresol EP Impurity E structure

Amylmetacresol EP Impurity E

CAS: 173851-66-6

In Stock97%+

Nitazoxanide impurity 01 structure

Nitazoxanide impurity 01

CAS: 173903-47-4

In Stock97%+

Tolterodine Impurity N4 structure

Tolterodine Impurity N4

CAS: 173948-30-6

In Stock97%+

Dydrogesterone Impurity 12; structure

Dydrogesterone Impurity 12;

CAS: 17398-60-6

In Stock97%+

Artemether 3α-Hydroxy Deoxy Impurity 2 structure

Artemether 3α-Hydroxy Deoxy Impurity 2

CAS: 174097-70-2

In Stock97%+

Brinzolamide Impurity 20 structure

Brinzolamide Impurity 20

CAS: 174139-69-6

In Stock97%+

Diphenidol Impurity 3 structure

Diphenidol Impurity 3

CAS: 17435-91-5

In Stock97%+

Amoxicillin Trimer Impurity 1 structure

Amoxicillin Trimer Impurity 1

CAS: 174391-69-6

In Stock97%+

Amifostine Impurity 7 structure

Amifostine Impurity 7

CAS: 174397-83-2

In Stock97%+

Melphalan Impurity 17 structure

Melphalan Impurity 17

CAS: 17451-67-1

In Stock97%+

Nevirapine 3-Formyl Impurity structure

Nevirapine 3-Formyl Impurity

CAS: 174532-77-5

In Stock97%+

Nevirapine 3-Hydroxy Impurity structure

Nevirapine 3-Hydroxy Impurity

CAS: 174532-82-2

In Stock97%+

Tavaborole Impurity 4 structure

Tavaborole Impurity 4

CAS: 174671-88-6

In Stock97%+

Tavaborole Impurity 12 structure

Tavaborole Impurity 12

CAS: 174671-93-3

In Stock97%+

Olanzapine EP Impurity D (Olanzapine USP Related Compound C, Olanzapine N-Oxide (Piperazine N1-Oxide)) structure

Olanzapine EP Impurity D (Olanzapine USP Related Compound C, Olanzapine N-Oxide (Piperazine N1-Oxide))

CAS: 174794-02-6

In Stock>95%

Azelastine Impurity 29 structure

Azelastine Impurity 29

CAS: 174826-63-2

In Stock97%+

N-Nitroso Tolnaftate EP Impurity D structure

N-Nitroso Tolnaftate EP Impurity D

CAS: 17485-25-5

In Stock97%+

Nitrofurantoin Impurity 3 structure

Nitrofurantoin Impurity 3

CAS: 1749-92-4

In Stock97%+

Nortriptyline Impurity 1 HCl structure

Nortriptyline Impurity 1 HCl

CAS: 1750-07-8

In Stock97%+

Naphazoline Impurity 1 structure

Naphazoline Impurity 1

CAS: 17518-47-7

In Stock97%+

Afatinib Impurity 28 structure

Afatinib Impurity 28

CAS: 17519-02-7

In Stock97%+

Opicapone Impurity 01 structure

Opicapone Impurity 01

CAS: 175204-44-1

In Stock97%+

Lacosamide Impurity 15 structure

Lacosamide Impurity 15

CAS: 175481-31-9

In Stock97%+

Pramipexole Impurity 33 structure

Pramipexole Impurity 33

CAS: 17557-67-4

In Stock97%+

Tapentadol EP Impurity E Hydrochloride structure

Tapentadol EP Impurity E Hydrochloride

CAS: 175591-17-0

In Stock97%+

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