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Pharmaceutical Impurity Reference Standards

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

N-Methyl-N-(2-nitrobenzyl)cyclohexanamine hydrochloride structure

N-Methyl-N-(2-nitrobenzyl)cyclohexanamine hydrochloride

CAS: 31611-42-4

In Stock>95%

N-Nitroso Benzocaine Impurity 1 structure

N-Nitroso Benzocaine Impurity 1

CAS: 208176-48-1

In Stock97%+

N-Nitroso Fluoxetine EP Impurity B structure

N-Nitroso Fluoxetine EP Impurity B

CAS: 259547-00-7

In Stock97%+

N-Nitroso Folic acid EP Impurity C structure

N-Nitroso Folic acid EP Impurity C

CAS: 29291-35-8

In Stock97%+

N-Nitroso Loperamide EP Impurity C structure

N-Nitroso Loperamide EP Impurity C

CAS: 3192-36-7

In Stock97%+

N-Nitroso Lurasidone Impurity 3 structure

N-Nitroso Lurasidone Impurity 3

CAS: 37015-96-6

In Stock97%+

N-Nitroso Carbamazepine EP Impurity E (N-Nitroso Clomipramine HCl EP Impurity E) structure

N-Nitroso Carbamazepine EP Impurity E (N-Nitroso Clomipramine HCl EP Impurity E)

CAS: 7458-08-4

In Stock97%+

N-nitroso-Methyl-L-Proline Impurity structure

N-nitroso-Methyl-L-Proline Impurity

CAS: 35909-01-4

In Stock97%+

Nomegestrol Acetate Impurity A Reference Standard structure

Nomegestrol Acetate Impurity A Reference Standard

CAS: 32420-14-7

In Stock97%+

Nomegestrol Impurity 4 structure

Nomegestrol Impurity 4

CAS: 58652-19-0

In Stock97%+

Noradrenaline EP Impurity E structure

Noradrenaline EP Impurity E

CAS: 54234-59-2

In Stock>95%

Noradrenaline(Norepinephrine) Impurity 68 structure

Noradrenaline(Norepinephrine) Impurity 68

CAS: 67083-58-3

In Stock97%+

Norborn-2-ene Impurity 1 structure

Norborn-2-ene Impurity 1

CAS: 87480-43-1

In Stock97%+

Norborn-2-ene Impurity 2 structure

Norborn-2-ene Impurity 2

CAS: 7322-46-5

In Stock97%+

Chlorprothixene EP Impurity C HCI structure

Chlorprothixene EP Impurity C HCI

CAS: 51382-91-3 (free base)

In Stock97%+

Norepinephrine Impurity 31 structure

Norepinephrine Impurity 31

CAS: 73660-93-2

In Stock97%+

Norepinephrine Impurity 32 HCl structure

Norepinephrine Impurity 32 HCl

CAS: 41462-32-2

In Stock97%+

Norepinephrine Impurity 40 structure

Norepinephrine Impurity 40

CAS: 3569-19-5

In Stock97%+

Norethindrone 6-alpha-Hydroxy Impurity structure

Norethindrone 6-alpha-Hydroxy Impurity

CAS: 438244-33-8

In Stock97%+

Norethindrone Acetate 6-alpha-Hydroxy Impurity structure

Norethindrone Acetate 6-alpha-Hydroxy Impurity

CAS: 6856-28-6

In Stock97%+

Norethindrone Acetate EP Impurity I structure

Norethindrone Acetate EP Impurity I

CAS: 50717-99-2

In Stock97%+

Norethindrone Acetate Impurity 13 structure

Norethindrone Acetate Impurity 13

CAS: 40228-41-9

In Stock97%+

Norethindrone Impurity 23 (6-beta-Hydroxy-19-Norandrostenedione) structure

Norethindrone Impurity 23 (6-beta-Hydroxy-19-Norandrostenedione)

CAS: 5949-49-5

In Stock97%+

Norethindrone Impurity 6 structure

Norethindrone Impurity 6

CAS: 6424-05-1

In Stock97%+

Norethindrone Impurity 8 structure

Norethindrone Impurity 8

CAS: 25796-09-2

In Stock97%+

Norfloxacin EP Impurity E structure

Norfloxacin EP Impurity E

CAS: 75001-85-3

In Stock97%+

Norfloxacin EP Impurity F structure

Norfloxacin EP Impurity F

CAS: 67681-84-9

In Stock97%+

Norfloxacin Impurity C822 structure

Norfloxacin Impurity C822

CAS: 67681-88-3

In Stock97%+

Norfloxacin Impurity 4 structure

Norfloxacin Impurity 4

CAS: 75073-15-3

In Stock97%+

Norfloxacin Impurity 8 structure

Norfloxacin Impurity 8

CAS: 75001-83-1

In Stock97%+

Norfloxacin Impurity C25 structure

Norfloxacin Impurity C25

CAS: 74011-47-5

In Stock97%+

Norfloxacin Impurity K structure

Norfloxacin Impurity K

CAS: 70459-07-3

In Stock97%+

Norflurane EP Impurity KK structure

Norflurane EP Impurity KK

CAS: 754-12-1

In Stock97%+

Norgestimate - Impurity C structure

Norgestimate - Impurity C

CAS: 74183-55-4

In Stock97%+

Norgestrel Impurity 1 structure

Norgestrel Impurity 1

CAS: 6236-40-4

In Stock97%+

Levomepromazine EP Impurity C HCl structure

Levomepromazine EP Impurity C HCl

CAS: 61733-92-4

In Stock97%+

Nortriptyline EP Impurity B structure

Nortriptyline EP Impurity B

CAS: 303-50-4

In Stock97%+

Nortriptyline EP Impurity B HCl structure

Nortriptyline EP Impurity B HCl

CAS: 438-59-5

In Stock97%+

Nortropine Impurity 2 structure

Nortropine Impurity 2

CAS: 501-33-7

In Stock97%+

Noscapine Impurity 2 (Cotarninium Cation) structure

Noscapine Impurity 2 (Cotarninium Cation)

CAS: 20276-45-3

In Stock97%+

Noscapine Impurity 3 structure

Noscapine Impurity 3

CAS: 550-10-7

In Stock97%+

Noscapine Impurity 5 structure

Noscapine Impurity 5

CAS: 519-05-1

In Stock97%+

Noscapine Impurity 8 structure

Noscapine Impurity 8

CAS: 64179-42-6

In Stock97%+

n-propyl trifluoroacetate Impurity structure

n-propyl trifluoroacetate Impurity

CAS: 383-66-4

In Stock97%+

Nylon 6,6 Impurity 1 structure

Nylon 6,6 Impurity 1

CAS: 5136-16-3

In Stock97%+

Obeticholic Acid Impurity 52 structure

Obeticholic Acid Impurity 52

CAS: 60354-42-9

In Stock97%+

Octopamine Impurity N1 structure

Octopamine Impurity N1

CAS: 93019-46-6

In Stock>95%

Ofloxacin Impurity N1 structure

Ofloxacin Impurity N1

CAS: 82419-34-9

In Stock97%+

Olanzapine Impurity 29 structure

Olanzapine Impurity 29

CAS: 59591-86-5

In Stock97%+

Olanzapine Impurity 30 structure

Olanzapine Impurity 30

CAS: 55525-92-3

In Stock97%+

Olanzapine Impurity 47 structure

Olanzapine Impurity 47

CAS: 612507-13-8

In Stock97%+

Olanzapine Impurity 01 structure

Olanzapine Impurity 01

CAS: 935272-10-9

In Stock97%+

Olaparib Impurity N12 structure

Olaparib Impurity N12

CAS: 763114-04-1

In Stock97%+

Olaparib Impurity 21 structure

Olaparib Impurity 21

CAS: 54769-22-1

In Stock97%+

Olaparib Impurity 62 structure

Olaparib Impurity 62

CAS: 76816-54-1

In Stock97%+

Olaquindox Impurity 2 structure

Olaquindox Impurity 2

CAS: 66501-07-3

In Stock97%+

Olaquindox Impurity 6 structure

Olaquindox Impurity 6

CAS: 23696-26-6

In Stock97%+

Oleanolic Acid Impurity 1 structure

Oleanolic Acid Impurity 1

CAS: 35738-25-1

In Stock97%+

Olmesartan Impurity 10 structure

Olmesartan Impurity 10

CAS: 4437-70-1

In Stock97%+

Olmesartan Impurity 45 structure

Olmesartan Impurity 45

CAS: 866721-92-8

In Stock97%+

(R)-Olodaterol Benzyl Ether structure

(R)-Olodaterol Benzyl Ether

CAS: 869478-13-7

In Stock>90%

Olodaterol Impurity N6 structure

Olodaterol Impurity N6

CAS: 869478-10-4

In Stock>95%

Olopatadine Impurity 15 structure

Olopatadine Impurity 15

CAS: 70240-41-4

In Stock97%+

Olopatadine Impurity 25 structure

Olopatadine Impurity 25

CAS: 88630-37-9

In Stock97%+

Olopatadine Impurity 35 structure

Olopatadine Impurity 35

CAS: 89019-82-9

In Stock97%+

Olopatadine Impurity C504 HBr structure

Olopatadine Impurity C504 HBr

CAS: 27710-82-3

In Stock97%+

Olopatadine Impurity N1 structure

Olopatadine Impurity N1

CAS: 203188-31-2

In Stock97%+

Olprinone Impurity 9 structure

Olprinone Impurity 9

CAS: 913835-63-9

In Stock97%+

Omeprazole Impurity 102 structure

Omeprazole Impurity 102

CAS: 5472-37-7

In Stock97%+

Esomeprazole Impurity 15 structure

Esomeprazole Impurity 15

CAS: 208-75-3

In Stock97%+

Omeprazole Impurity 44 structure

Omeprazole Impurity 44

CAS: 69818-23-1

In Stock97%+

Omeprazole Impurity 49 structure

Omeprazole Impurity 49

CAS: 22094-69-5

In Stock97%+

Omeprazole Impurity 53 structure

Omeprazole Impurity 53

CAS: 20734-76-3

In Stock97%+

Omeprazole Impurity 53 structure

Omeprazole Impurity 53

CAS: 73590-87-1

In Stock97%+

Omeprazole Impurity 54 structure

Omeprazole Impurity 54

CAS: 23165-60-8

In Stock97%+

Omeprazole EP Impurity C-d3 structure

Omeprazole EP Impurity C-d3

CAS: 922731-00-8

In Stock97%+

Opicapone Impurity 1 structure

Opicapone Impurity 1

CAS: 91591-66-1

In Stock97%+

Opicapone Impurity 02 structure

Opicapone Impurity 02

CAS: 923288-59-9

In Stock97%+

Opipramol Impurity 1 structure

Opipramol Impurity 1

CAS: 4346-38-7

In Stock97%+

Orlistat Dimer Impurity structure

Orlistat Dimer Impurity

CAS: 881900-54-5

In Stock97%+

Orlistat Impurity 15 ((S,E)-Henicos-7-en-10-ol) structure

Orlistat Impurity 15 ((S,E)-Henicos-7-en-10-ol)

CAS: 68711-41-1

In Stock97%+

Orlistat Impurity 16 structure

Orlistat Impurity 16

CAS: 68711-40-0

In Stock97%+

Orlistat Impurity 26 structure

Orlistat Impurity 26

CAS: 76835-67-1

In Stock97%+

Ornidazole Impurity C42 structure

Ornidazole Impurity C42

CAS: 934-63-4

In Stock97%+

Ornidazole Impurity 40 structure

Ornidazole Impurity 40

CAS: 60174-20-1

In Stock97%+

Orphenadrine EP Impurity E structure

Orphenadrine EP Impurity E

CAS: 21945-86-8

In Stock97%+

Orphenadrine EP Impurity A structure

Orphenadrine EP Impurity A

CAS: 5472-13-9

In Stock97%+

Orphenadrine Impurity 3 structure

Orphenadrine Impurity 3

CAS: 41870-52-4

In Stock97%+

Orphenadrine USP Related Compound B structure

Orphenadrine USP Related Compound B

CAS: 93940-17-1

In Stock97%+

Oryzanol Impurity 7 structure

Oryzanol Impurity 7

CAS: 20972-07-0

In Stock97%+

Oseltamivir Impurity 147 structure

Oseltamivir Impurity 147

CAS: 28547-24-2

In Stock97%+

Oseltamivir Impurity 93 structure

Oseltamivir Impurity 93

CAS: 651324-09-3

In Stock97%+

Osimertinib Impurity 28 structure

Osimertinib Impurity 28

CAS: 6637-11-2

In Stock97%+

Ospemifene Impurity 3 structure

Ospemifene Impurity 3

CAS: 756488-22-9

In Stock97%+

Oxandrolone Impurity 2 structure

Oxandrolone Impurity 2

CAS: 313047-21-1

In Stock97%+

Oxaprozin Impurity 1 structure

Oxaprozin Impurity 1

CAS: 55217-15-7

In Stock97%+

Oxaprozin Impurity 2 structure

Oxaprozin Impurity 2

CAS: 24248-49-5

In Stock97%+

Oxazepam EP Impurity C structure

Oxazepam EP Impurity C

CAS: 5958-05-4

In Stock97%+

Oxazolidinethione Impurity 3 structure

Oxazolidinethione Impurity 3

CAS: 68831-68-5

In Stock97%+

Oxazolidinethione Impurity 4 structure

Oxazolidinethione Impurity 4

CAS: 3433-15-6

In Stock97%+

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