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Pharmaceutical Impurity Reference Standards

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

Naproxen Impurity N1 structure

Naproxen Impurity N1

CAS: 27602-75-1

In Stock97%+

Naratriptan Impurity FDuplicate of B486100 structure

Naratriptan Impurity FDuplicate of B486100

CAS: 2144776-33-8

In Stock97%+

Nateglinide Impurity 3 structure

Nateglinide Impurity 3

CAS: 491828-09-2

In Stock97%+

N-butyryl Mesalazine Impurity structure

N-butyryl Mesalazine Impurity

CAS: 93968-81-1

In Stock97%+

Hydroxychloroquine Impurity N75 structure

Hydroxychloroquine Impurity N75

CAS: 4298-11-7

In Stock97%+

Atomoxetine impurity 02 structure

Atomoxetine impurity 02

CAS: 881995-46-6

In Stock97%+

Edoxaban Impurity N4 structure

Edoxaban Impurity N4

CAS: 778571-11-2

In Stock97%+

Imatinib Mesilate EP Impurity C Mesylate structure

Imatinib Mesilate EP Impurity C Mesylate

CAS: 404844-03-7

In Stock97%+

Netupitant Impurity N2 HCl structure

Netupitant Impurity N2 HCl

CAS: 290296-72-9(free base)

In Stock97%+

Nebivolol Impurity 24 structure

Nebivolol Impurity 24

CAS: 920275-23-6

In Stock97%+

Nebivolol Impurity 26 structure

Nebivolol Impurity 26

CAS: 920299-33-8

In Stock97%+

Nebivolol Impurity N1 structure

Nebivolol Impurity N1

CAS: 929706-85-4

In Stock97%+

Nebivolol Impurity 44 structure

Nebivolol Impurity 44

CAS: 920275-19-0

In Stock97%+

Nebivolol Impurity 49 structure

Nebivolol Impurity 49

CAS: 797054-16-1

In Stock97%+

Nebivolol Impurity 5 structure

Nebivolol Impurity 5

CAS: 409346-73-2

In Stock97%+

Nebivolol Impurity 50 structure

Nebivolol Impurity 50

CAS: 99199-62-9

In Stock97%+

Nebivolol Impurity 52 structure

Nebivolol Impurity 52

CAS: 303176-45-6

In Stock97%+

Nebivolol Impurity 53 structure

Nebivolol Impurity 53

CAS: 303176-43-4

In Stock97%+

Nebivolol Impurity 54 structure

Nebivolol Impurity 54

CAS: 303176-39-8

In Stock97%+

Nebivolol Impurity 90 structure

Nebivolol Impurity 90

CAS: 51939-71-0

In Stock97%+

Nebramine Impurity 2 structure

Nebramine Impurity 2

CAS: 38168-82-0

In Stock97%+

Nedaplatin Impurity C183 structure

Nedaplatin Impurity C183

CAS: 20115-65-5

In Stock97%+

Nedaplatin Impurity C184 structure

Nedaplatin Impurity C184

CAS: 52241-26-6

In Stock97%+

Nedaplatin Impurity C185 structure

Nedaplatin Impurity C185

CAS: 62048-58-2

In Stock97%+

Nefazodone Impurity 5 structure

Nefazodone Impurity 5

CAS: 95885-13-5

In Stock97%+

Nefazodone Impurity 6 structure

Nefazodone Impurity 6

CAS: 98159-82-1

In Stock97%+

Nefazodone Impurity 9 structure

Nefazodone Impurity 9

CAS: 98159-88-7

In Stock97%+

Nefopam Impurity 4 structure

Nefopam Impurity 4

CAS: 32557-55-4

In Stock97%+

Neomycin Impurity N1 structure

Neomycin Impurity N1

CAS: 55781-25-4

In Stock97%+

Neomycin Impurity 7 structure

Neomycin Impurity 7

CAS: 59433-00-0

In Stock97%+

Neostigmine impurity 01 structure

Neostigmine impurity 01

CAS: 618-09-7

In Stock97%+

Nepafenac Impurity 12 structure

Nepafenac Impurity 12

CAS: 98190-48-8

In Stock97%+

Nepafenac Impurity 5 structure

Nepafenac Impurity 5

CAS: 78281-71-7

In Stock97%+

Nepafenac Impurity 5(Amfenac) structure

Nepafenac Impurity 5(Amfenac)

CAS: 51579-82-9

In Stock97%+

Nepafenac Impurity 6 structure

Nepafenac Impurity 6

CAS: 7500-78-9

In Stock97%+

Nepafenac Impurity B structure

Nepafenac Impurity B

CAS: 78281-61-5

In Stock97%+

Neratinib Impurity 2 structure

Neratinib Impurity 2

CAS: 876310-02-0

In Stock97%+

Neratinib Impurity N1 structure

Neratinib Impurity N1

CAS: 848139-78-6

In Stock97%+

Neratinib Impurity N2 structure

Neratinib Impurity N2

CAS: 915941-95-6

In Stock97%+

Netupitant Impurity N3 structure

Netupitant Impurity N3

CAS: 873443-69-7

In Stock97%+

Netupitant Impurity 9 structure

Netupitant Impurity 9

CAS: 67902-00-5

In Stock97%+

Netupitant Impurity I structure

Netupitant Impurity I

CAS: 95299-16-4

In Stock97%+

Nevirapine EP Impurity C structure

Nevirapine EP Impurity C

CAS: 287980-85-2

In Stock97%+

Nevirapine 2-Nitro Impurity structure

Nevirapine 2-Nitro Impurity

CAS: 284686-16-4

In Stock97%+

Nevirapine EP Impurity B structure

Nevirapine EP Impurity B

CAS: 287980-84-1

In Stock97%+

Nevirapine Impurity 26 structure

Nevirapine Impurity 26

CAS: 284686-19-7

In Stock97%+

Nevirapine Impurity 27 structure

Nevirapine Impurity 27

CAS: 284686-17-5

In Stock97%+

Nicardipine Impurity 49 structure

Nicardipine Impurity 49

CAS: 27058-12-4

In Stock97%+

Nicergoline Impurity 13 structure

Nicergoline Impurity 13

CAS: 30341-93-6

In Stock97%+

Nicergoline Impurity 9 structure

Nicergoline Impurity 9

CAS: 23495-65-0

In Stock97%+

Nicorandil Impurity N1 structure

Nicorandil Impurity N1

CAS: 46053-56-9

In Stock97%+

Nicorandil Impurity 20 structure

Nicorandil Impurity 20

CAS: 70892-82-9

In Stock97%+

Nicorandil Impurity 28 structure

Nicorandil Impurity 28

CAS: 34104-46-6

In Stock97%+

Nicotine EP Impurity G DiHCl structure

Nicotine EP Impurity G DiHCl

CAS: 31945-06-9

In Stock97%+

Nicotine Impurity 1 structure

Nicotine Impurity 1

CAS: 887355-56-8

In Stock97%+

Nicotine Impurity 2 structure

Nicotine Impurity 2

CAS: 2820-55-5

In Stock97%+

Nicotine Impurity C34 structure

Nicotine Impurity C34

CAS: 525-74-6

In Stock97%+

Nicotinic Acid EP Impurity C HCl structure

Nicotinic Acid EP Impurity C HCl

CAS: 2024-89-7

In Stock97%+

Nifedipine Impurity 21 structure

Nifedipine Impurity 21

CAS: 27178-83-2

In Stock97%+

Nifedipine Impurity 27 structure

Nifedipine Impurity 27

CAS: 36149-51-6

In Stock97%+

Niflumic Acid - Impurity B structure

Niflumic Acid - Impurity B

CAS: 72633-64-8

In Stock97%+

Niflumic Acid EP Impurity F structure

Niflumic Acid EP Impurity F

CAS: 59361-45-4

In Stock97%+

Nifuratel Impurity 13 structure

Nifuratel Impurity 13

CAS: 5904-70-1

In Stock97%+

Nifuratel Impurity 16 structure

Nifuratel Impurity 16

CAS: 19987-13-4

In Stock97%+

Nifuratel impurity 18 structure

Nifuratel impurity 18

CAS: 3455-50-3

In Stock97%+

Nifuratel Impurity 32 structure

Nifuratel Impurity 32

CAS: 98264-38-1

In Stock97%+

Nilotinib 2-Pyridinyl Impurity structure

Nilotinib 2-Pyridinyl Impurity

CAS: 66521-65-1

In Stock97%+

Nilotinib Bromo Impurity structure

Nilotinib Bromo Impurity

CAS: 54962-75-3

In Stock97%+

Nilotinib Impurity 19 structure

Nilotinib Impurity 19

CAS: 915711-42-1

In Stock97%+

Nilotinib Impurity 2 structure

Nilotinib Impurity 2

CAS: 943320-48-7

In Stock97%+

Nilotinib Iodo Impurity structure

Nilotinib Iodo Impurity

CAS: 926922-18-1

In Stock97%+

Nilutamide EP Impurity C structure

Nilutamide EP Impurity C

CAS: 65274-43-3

In Stock97%+

Nilutamide Impurity 1 structure

Nilutamide Impurity 1

CAS: 63612-49-7

In Stock97%+

Nimesulide Impurity 2 structure

Nimesulide Impurity 2

CAS: 38880-53-4

In Stock97%+

Nimesulide Impurity N1 structure

Nimesulide Impurity N1

CAS: 19881-18-6

In Stock97%+

Nimesulide Impurity 8 structure

Nimesulide Impurity 8

CAS: 2216-12-8

In Stock97%+

Nimodipine Impurity 2 structure

Nimodipine Impurity 2

CAS: 62760-01-4

In Stock97%+

Nimodipine Impurity N1 structure

Nimodipine Impurity N1

CAS: 62760-10-5

In Stock97%+

Nimodipine Impurity 19 structure

Nimodipine Impurity 19

CAS: 64163-94-6

In Stock97%+

Nintedanib Impurity N11 structure

Nintedanib Impurity N11

CAS: 91362-61-7

In Stock97%+

Nintedanib Impurity N12 structure

Nintedanib Impurity N12

CAS: 22911-21-3

In Stock97%+

Nintedanib Impurity 30 structure

Nintedanib Impurity 30

CAS: 60743-21-7

In Stock97%+

Nintedanib Impurity 31 structure

Nintedanib Impurity 31

CAS: 4316-33-0

In Stock97%+

Niraparib Impurity 7 (E-Isomer) structure

Niraparib Impurity 7 (E-Isomer)

CAS: 68109-89-7

In Stock97%+

Niraparib Impurity 7 (Mixture of Isomers) structure

Niraparib Impurity 7 (Mixture of Isomers)

CAS: 93247-79-1

In Stock97%+

Nitazoxanide Impurity 2 structure

Nitazoxanide Impurity 2

CAS: 952686-58-7

In Stock97%+

Nitisinone Impurity 2 structure

Nitisinone Impurity 2

CAS: 778-94-9

In Stock97%+

Nitrazepam EP Impurity C structure

Nitrazepam EP Impurity C

CAS: 2011-70-3

In Stock97%+

Nitrazepam EP Impurity D structure

Nitrazepam EP Impurity D

CAS: 33311-76-1

In Stock97%+

Nitrazepam Impurity 3 structure

Nitrazepam Impurity 3

CAS: 20821-91-4

In Stock97%+

Nitrendipine Impurity 7 structure

Nitrendipine Impurity 7

CAS: 67593-37-7

In Stock97%+

Nitrofurantoin Impurity N1 structure

Nitrofurantoin Impurity N1

CAS: 91447-38-0

In Stock97%+

Nitrosamines Impurity 36 structure

Nitrosamines Impurity 36

CAS: 84174-24-3

In Stock97%+

Nitrosamines Impurity 7 structure

Nitrosamines Impurity 7

CAS: 62783-48-6

In Stock97%+

Nizatidine - Impurity D (Di Oxalate) structure

Nizatidine - Impurity D (Di Oxalate)

CAS: 78441-63-1

In Stock97%+

Nizatidine - Impurity J (Hydrochloride Salt) structure

Nizatidine - Impurity J (Hydrochloride Salt)

CAS: 82586-70-7

In Stock97%+

Nizatidine Impurity 1 structure

Nizatidine Impurity 1

CAS: 92759-37-0

In Stock97%+

Nizatidine EP Impurity H structure

Nizatidine EP Impurity H

CAS: 27507-28-4

In Stock97%+

Maprotiline EP impurity E HCl structure

Maprotiline EP impurity E HCl

CAS: 23941-45-9

In Stock97%+

Labetalol Impurity N1 structure

Labetalol Impurity N1

CAS: 63957-19-7

In Stock97%+

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