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Pharmaceutical Impurity Reference Standards

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

Guaifenesin Impurity 1 structure

Guaifenesin Impurity 1

CAS: 61248-75-7

In Stock97%+

Guanfacine Impurity 10 structure

Guanfacine Impurity 10

CAS: 24067-37-6

In Stock97%+

Guanfacine Impurity 4 structure

Guanfacine Impurity 4

CAS: 78622-22-7

In Stock97%+

Halobetasol Propionate Impurity D structure

Halobetasol Propionate Impurity D

CAS: 66852-61-7

In Stock97%+

Halofantrine impurity C CRS structure

Halofantrine impurity C CRS

CAS: 38492-81-8

In Stock97%+

Halometasone Impurity N3 structure

Halometasone Impurity N3

CAS: 23961-22-0

In Stock97%+

Haloperidol Decanoate EP Impurity K structure

Haloperidol Decanoate EP Impurity K

CAS: 65135-24-2

In Stock97%+

Haloperidol Impurity 19 structure

Haloperidol Impurity 19

CAS: 71501-46-7

In Stock97%+

Haloperidol Impurity 3 structure

Haloperidol Impurity 3

CAS: 51304-61-1

In Stock97%+

Haloperidol Impurity 33 structure

Haloperidol Impurity 33

CAS: 235109-63-4

In Stock97%+

Halothane Impurity 1 (Halothane EP Impurity A) structure

Halothane Impurity 1 (Halothane EP Impurity A)

CAS: 66711-86-2

In Stock97%+

Halothane Impurity 14 structure

Halothane Impurity 14

CAS: 431-89-0

In Stock97%+

Halothane Impurity 4 (Halothane EP Impurity D) structure

Halothane Impurity 4 (Halothane EP Impurity D)

CAS: 20591-32-6

In Stock97%+

Heptachlor epoxide Impurity 4 structure

Heptachlor epoxide Impurity 4

CAS: 76986-14-6

In Stock97%+

Heptaminol Hydrochloride - Impurity A structure

Heptaminol Hydrochloride - Impurity A

CAS: 22462-79-9

In Stock97%+

Hesperidin Impurity 2 structure

Hesperidin Impurity 2

CAS: 28034-80-2

In Stock97%+

Hexadecanoic Acid Impurity 1 structure

Hexadecanoic Acid Impurity 1

CAS: 55019-46-0

In Stock97%+

Hexadecanoic Acid Impurity 2 structure

Hexadecanoic Acid Impurity 2

CAS: 2490-48-4

In Stock>95%

Hexamidine Impurity 4 structure

Hexamidine Impurity 4

CAS: 74065-84-2

In Stock97%+

Hexanal Impurity 5 structure

Hexanal Impurity 5

CAS: 58257-19-5

In Stock97%+

Hexazinone Impurity 14 structure

Hexazinone Impurity 14

CAS: 51235-32-6

In Stock97%+

Hexazinone Impurity 18 structure

Hexazinone Impurity 18

CAS: 57987-26-5

In Stock97%+

Hexazinone Impurity 20 structure

Hexazinone Impurity 20

CAS: 51236-16-9

In Stock97%+

Hexazinone Impurity 22 structure

Hexazinone Impurity 22

CAS: 57987-29-8

In Stock97%+

Hexazinone Impurity 23 structure

Hexazinone Impurity 23

CAS: 62442-49-3

In Stock97%+

Hexazinone Impurity 26 structure

Hexazinone Impurity 26

CAS: 51235-44-0

In Stock97%+

Hexazinone Impurity 3 structure

Hexazinone Impurity 3

CAS: 51235-28-0

In Stock97%+

Hexazinone Impurity 5 structure

Hexazinone Impurity 5

CAS: 72576-13-7

In Stock97%+

Hexazinone Impurity 6 structure

Hexazinone Impurity 6

CAS: 57660-65-8

In Stock97%+

Hexazinone Impurity 7 structure

Hexazinone Impurity 7

CAS: 51235-47-3

In Stock97%+

Hexylresorcinol EP Impurity C structure

Hexylresorcinol EP Impurity C

CAS: 533-24-4

In Stock97%+

Homoharringtonine Impurity 6 structure

Homoharringtonine Impurity 6

CAS: 38848-21-4

In Stock97%+

Hydantoin Impurity 1 structure

Hydantoin Impurity 1

CAS: 6859-11-6

In Stock97%+

Hydantoin Impurity 2 structure

Hydantoin Impurity 2

CAS: 69489-37-8

In Stock97%+

Hydantoin Impurity 3 structure

Hydantoin Impurity 3

CAS: 4224-00-4

In Stock97%+

Hydantoin Impurity 4 (3-Methylhydantoic Acid) structure

Hydantoin Impurity 4 (3-Methylhydantoic Acid)

CAS: 30565-25-4

In Stock97%+

Hydralazine Impurity 2 structure

Hydralazine Impurity 2

CAS: 600707-30-0

In Stock97%+

Hydralazine Impurity 3 structure

Hydralazine Impurity 3

CAS: 6091-81-2

In Stock97%+

Hydralazine Impurity 5 structure

Hydralazine Impurity 5

CAS: 55294-87-6

In Stock97%+

Hydralazine Impurity 6 structure

Hydralazine Impurity 6

CAS: 59283-60-2

In Stock97%+

Hydrochlorothiazide Impurity 15 structure

Hydrochlorothiazide Impurity 15

CAS: 23141-75-5

In Stock97%+

Hydrochlorothiazide Impurity 19 structure

Hydrochlorothiazide Impurity 19

CAS: 85119-88-6

In Stock97%+

Hydrochlorothiazide Impurity 22 structure

Hydrochlorothiazide Impurity 22

CAS: 90794-87-9

In Stock97%+

Hydrochlorothiazide Impurity 29 structure

Hydrochlorothiazide Impurity 29

CAS: 957785-35-2

In Stock97%+

Hydrochlorothiazide Impurity 34 structure

Hydrochlorothiazide Impurity 34

CAS: 250-72-6

In Stock97%+

Hydrochlorothiazide Impurity 9 structure

Hydrochlorothiazide Impurity 9

CAS: 364-96-5

In Stock97%+

Hydrocodone Hydrogen Tartrate Hydrate - Impurity G structure

Hydrocodone Hydrogen Tartrate Hydrate - Impurity G

CAS: 41714-53-8

In Stock97%+

Hydrocortisone EP Impurity E structure

Hydrocortisone EP Impurity E

CAS: 7753-60-8

In Stock97%+

Hydrocortisone Acetate EP Impurity G structure

Hydrocortisone Acetate EP Impurity G

CAS: 81968-66-3

In Stock97%+

Hydrocortisone Impurity structure

Hydrocortisone Impurity

CAS: 20287-97-2

In Stock97%+

Hydrocortisone Impurity N1 structure

Hydrocortisone Impurity N1

CAS: 3331-69-9

In Stock97%+

Hydrocortisone Impurity 17 structure

Hydrocortisone Impurity 17

CAS: 21590-20-5

In Stock97%+

Hydrocortisone Impurity 18 structure

Hydrocortisone Impurity 18

CAS: 27149-68-4

In Stock97%+

Hydrocortisone Impurity 39 structure

Hydrocortisone Impurity 39

CAS: 3593-96-2

In Stock97%+

Hydrocortisone Impurity D (Na) structure

Hydrocortisone Impurity D (Na)

CAS: 70795-33-4

In Stock97%+

Hydroxychloroquine EP Impurity E Hydrochloride structure

Hydroxychloroquine EP Impurity E Hydrochloride

CAS: 5456-04-2

In Stock97%+

Hydroxychloroquine Impurity 11 structure

Hydroxychloroquine Impurity 11

CAS: 21617-12-9

In Stock97%+

Hydroxychloroquine Impurity 19 structure

Hydroxychloroquine Impurity 19

CAS: 23834-01-7

In Stock97%+

Hydroxychloroquine Impurity 41 structure

Hydroxychloroquine Impurity 41

CAS: 91828-61-4

In Stock97%+

Hydroxychloroquine Impurity N54 structure

Hydroxychloroquine Impurity N54

CAS: 5448-52-2

In Stock97%+

Hydroxychloroquine Sulfate Impurity 59 structure

Hydroxychloroquine Sulfate Impurity 59

CAS: 83206-48-8

In Stock97%+

Hydroxyzine Impurity 1 DiHCl structure

Hydroxyzine Impurity 1 DiHCl

CAS: 85293-16-9

In Stock97%+

Hydroxyzine Impurity 2 Dimaleate (Etodroxizine Dimaleate) structure

Hydroxyzine Impurity 2 Dimaleate (Etodroxizine Dimaleate)

CAS: 56335-21-8

In Stock97%+

Hyoscine Butylbromide EP Impurity E HCl structure

Hyoscine Butylbromide EP Impurity E HCl

CAS: 22235-98-9

In Stock97%+

Ibandronate Impurity 10 structure

Ibandronate Impurity 10

CAS: 95064-91-8

In Stock97%+

Ibandronate Impurity 40 structure

Ibandronate Impurity 40

CAS: 5725-96-2

In Stock97%+

Ibandronate Impurity 7 structure

Ibandronate Impurity 7

CAS: 6225-10-1

In Stock97%+

Ibandronate Sodium - Impurity A structure

Ibandronate Sodium - Impurity A

CAS: 287395-61-3

In Stock97%+

Ibipinabant Impurity 2 structure

Ibipinabant Impurity 2

CAS: 656827-86-0

In Stock97%+

Ibrutinib Impurity N2 structure

Ibrutinib Impurity N2

CAS: 43191-23-7

In Stock97%+

Ibuprofen Impurity 19 structure

Ibuprofen Impurity 19

CAS: 58609-73-7

In Stock97%+

Ibuprofen Impurity 2 structure

Ibuprofen Impurity 2

CAS: 859828-49-2

In Stock97%+

Ibuprofen Impurity 45 structure

Ibuprofen Impurity 45

CAS: 83394-44-9

In Stock97%+

Ibuprofen Impurity 73 structure

Ibuprofen Impurity 73

CAS: 25329-47-9

In Stock97%+

Ibuprofen Impurity 85 structure

Ibuprofen Impurity 85

CAS: 6921-35-3

In Stock97%+

Ibuprofen Piconol Impurity structure

Ibuprofen Piconol Impurity

CAS: 64622-45-3

In Stock97%+

Idarubicin Impurity 14 structure

Idarubicin Impurity 14

CAS: 92999-26-3

In Stock97%+

Idarubicin Impurity 15 structure

Idarubicin Impurity 15

CAS: 97777-78-1

In Stock97%+

Idarubicin Impurity 6 structure

Idarubicin Impurity 6

CAS: 60660-72-2

In Stock97%+

Idebenone Impurity N1 structure

Idebenone Impurity N1

CAS: 58185-99-2

In Stock97%+

Idebenone Impurity 3 structure

Idebenone Impurity 3

CAS: 58186-26-8

In Stock97%+

Idebenone Impurity 7 structure

Idebenone Impurity 7

CAS: 92038-37-4

In Stock97%+

Idelalisib Impurity 1 structure

Idelalisib Impurity 1

CAS: 870281-86-0

In Stock97%+

Idoxuridine 3-Epi Impurity structure

Idoxuridine 3-Epi Impurity

CAS: 93780-25-7

In Stock97%+

Ifosfamide EP Impurity A structure

Ifosfamide EP Impurity A

CAS: 22608-58-8

In Stock97%+

Ifosfamide EP Impurity E structure

Ifosfamide EP Impurity E

CAS: 42453-19-0

In Stock97%+

Ifosfamide EP Impurity B structure

Ifosfamide EP Impurity B

CAS: 241482-18-8

In Stock97%+

Ifosfamide EP Impurity F structure

Ifosfamide EP Impurity F

CAS: 81485-04-3 & 40722-73-4

In Stock97%+

Iloperidone Impurity 1 structure

Iloperidone Impurity 1

CAS: 207298-39-3

In Stock97%+

Iloperidone Impurity 15 structure

Iloperidone Impurity 15

CAS: 81055-36-9

In Stock97%+

Iloperidone Impurity 19 structure

Iloperidone Impurity 19

CAS: 54771-60-7

In Stock97%+

Iloperidone Impurity 3 structure

Iloperidone Impurity 3

CAS: 792857-93-3

In Stock97%+

Iloperidone Stage -I Impurity structure

Iloperidone Stage -I Impurity

CAS: 58113-30-7

In Stock97%+

Iloprost Impurity 1 structure

Iloprost Impurity 1

CAS: 74843-13-3

In Stock97%+

Iloprost Impurity 2 structure

Iloprost Impurity 2

CAS: 74843-14-4

In Stock97%+

Iloprost Impurity 6 structure

Iloprost Impurity 6

CAS: 85026-51-3

In Stock97%+

Imatinib EP Impurity F structure

Imatinib EP Impurity F

CAS: 6515-58-8

In Stock97%+

Imatinib Hydrochloride Impurity G structure

Imatinib Hydrochloride Impurity G

CAS: 50398-09-9

In Stock97%+

Imatinib Impurity 19 structure

Imatinib Impurity 19

CAS: 3367-50-8

In Stock97%+

Imatinib Impurity 2 structure

Imatinib Impurity 2

CAS: 796738-74-4

In Stock97%+

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