Impurities

Impurities are undesirable chemical components that remain in the active pharmaceutical ingredient during formulation. Impurities may reduce a product's efficacy.

Clozapine Standard

CAS Number

5786-21-0

Clozapine

Codeine for system suitability CRS

CAS Number

Codeine STD- 76-57-3: IMP-A- 2859-16-7: IMP-B- 57-27-2: IMP-C- 121395-47-9: IMP-D- 2585669-81-2: IMP-E- 1777-89-5: IMP-F- 4829-46-3: IMP-G- 115-37-7

Alternate CAS Number

Codeine STD- 6059-47-8(Monohydrate salt): IMP-B- 52-26-6 (HCl salt)

Codeine

Codeine Standard

CAS Number

76-57-3

Alternate CAS Number

6059-47-8(Monohydrate salt)

Codeine

Colchicine Hydrochloride

CAS Number

34371-48-7

Colchicine

Colchicine Standard

CAS Number

64-86-8

Alternate CAS Number

34371-48-7(HCl Salt)

Colchicine

Colistimethate sodium

CAS Number

8068-28-8

Colistimethate sodium

Colistin Standard

CAS Number

1066-17-7

Alternate CAS Number

1264-72-8(Sulphate Salt)

Colistin

Crisaborole Impurity A

CAS Number

888967-63-3

Crisaborole

Crizotinib Standard

CAS Number

877399-52-5

Crizotinib

Cyclobenzaprine

CAS Number

303-53-7

Chemical Primary Standard

Cyclophosphamide Related Compound A

CAS Number

821-48-7 (HCl)

Cyclophosphamide

Cyclophosphamide Related Compound B

CAS Number

158401-52-6

Cyclophosphamide

Cyclophosphamide Related Compound C

CAS Number

1071-28-9

Alternate CAS Number

155.09 g/mol

Cyclophosphamide

Cyclosporin EP Impurity D

CAS Number

108027-45-8

Ciclosporin (Cyclosporine)

Cyclosporin EP Impurity E

CAS Number

108027-46-9

Ciclosporin (Cyclosporine)

Cyclosporin EP Impurity F

CAS Number

Ciclosporin (Cyclosporine)

Cyclosporin EP Impurity G

CAS Number

63775-96-2

Ciclosporin (Cyclosporine)

Cyclosporin Impurity - H

CAS Number

83602-39-5

Ciclosporin (Cyclosporine)

Cyclosporin Standard

CAS Number

59865-13-3

Ciclosporin (Cyclosporine)

Cyclosporine Resolution Mixture

CAS Number

59865-13-3 (STD ): 108027-45-8 (IMP - U)

Ciclosporin (Cyclosporine)

D-(+)-(2-Chlorophenyl)glycine

CAS Number

86169-24-6

Clopidogrel

D-(-)-Norgestrel b-D-Glucuronide

CAS Number

Levonorgestrel

D-(-)-Norgestrel Sulfate Sodium Salt

CAS Number

1259126-61-8

Levonorgestrel

D-Alanine Isopropyl Ester Hydrochloride

CAS Number

39613-92-8

Alanine

Dabigatran Impurity H[Imp-E]

CAS Number

1408238-36-7

Dabigatran

Dapagliflozin Impurity-1

CAS Number

1103738-29-9

Dapagliflozin

Dapagliflozin Impurity-3

CAS Number

1280647-32-6

Dapagliflozin

Dasatinib hydrochloride

CAS Number

854001-07-3

Dasatinib

Dasatinib Hydrolytic Impurity

CAS Number

1245157-42-9

Dasatinib

Dasatinib Monohydrate

CAS Number

863127-77-9

Dasatinib

Dasatinib N-Oxide

CAS Number

910297-52-8

Dasatinib

Daunorubicin Standard

CAS Number

20830-81-3

Alternate CAS Number

23541-50-6(HCl Salt);23541-50-6(Epirubicin Hydrochloride - Impurity D)

Daunorubicin

Defluoro Atorvastatin Acetonide tert-Butyl Ester

CAS Number

1105067-91-1

Atorvastatin

Dehydro Amlodipine N-oxide

CAS Number

2418591-36-1

Amlodipine

Dehydro Apixaban Impurity

CAS Number

Apixaban

Delta-4-Cephalexin Diketopiperazine

CAS Number

65870-52-2

Alternate CAS Number

62673-90-9 (sodium salt)

Cephalexin

Delta-6,8(14)-Levonorgestrel

CAS Number

93798-38-0

Levonorgestrel

Demeclocycline Standard

CAS Number

127-33-3

Alternate CAS Number

64-73-3(HCl Salt)

Demeclocycline

Demethoxycurcumin

CAS Number

22608-11-3

Chemical Primary Standard

Demoxepam Standard

CAS Number

963-39-3

Demoxepam

Depyrazine 7,8-Dinitrophenyl Varenicline

CAS Number

230615-08-4

Varenicline

Depyrazine 7-Nitro-8-aminophenyl N-Trifluoroacetyl Varenicline

CAS Number

950781-89-2

Varenicline

Des-acetyl Apremilast

CAS Number

635705-72-5

Apremilast

Desacetyl Diltiazem Hydrochloride Impurity

CAS Number

75472-91-2

Alternate CAS Number

42399-40-6(Freebase)

Diltiazem

Desbutyrate Elagolix

CAS Number

830346-50-4

Elagolix

Desbutyrate Elagolix (S-Isomer)

CAS Number

2756307-50-1

Elagolix

Deschloro acenapine

CAS Number

1847487-56-2

Asenapine

Deschloro Amlodipine

CAS Number

88150-52-1

Amlodipine

Impurities

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