Impurities

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

Paclitaxel Impurity-F

CAS Number

153083-53-5

Paclitaxel

Paclitaxel Impurity-O

CAS Number

219783-77-4

Paclitaxel

Pefloxacin Impurity-G

CAS Number

70458-94-5

Pefloxacin

Pemetrexed Impurity-A

CAS Number

869791-42-4

Pemetrexed

Pemetrexed Impurity-D

CAS Number

144051-68-3

Alternate CAS Number

1265908-59-5(TriNa Salt)

Pemetrexed

Pemetrexed Impurity-E

CAS Number

182009-04-7

Alternate CAS Number

937370-10-0(DiNa Salt)

Pemetrexed

Permethrin Impurity-C

CAS Number

13826-35-2

Permethrin

Permethrin Impurity-G

CAS Number

64964-54-1

Alternate CAS Number

85576-82-5 (Relative stereochemistry)

Permethrin

Phenoxymethylpenicillin Impurity-E

CAS Number

Phenoxymethylpenicillin

Phenoxymethylpenicillin Impurity-F

CAS Number

2714805-53-3

Alternate CAS Number

4847-29-4 - No Stereochemistry

Phenoxymethylpenicillin

Phenylephrine Impurity-E

CAS Number

56917-44-3

Alternate CAS Number

71786-67-9(HCl Salt)

Phenylephrine

Phenytoin Impurity-C

CAS Number

3060-50-2

Phenytoin

Pimozide Impurity-C

CAS Number

2512213-29-3

Pimozide

Piretanide Impurity-A

CAS Number

67641-46-7

Piretanide

Piretanide Impurity-B

CAS Number

60376-76-3

Piretanide

Piretanide Impurity-C

CAS Number

104061-24-7

Piretanide

Prasugrel Standard

CAS Number

150322-43-3

Alternate CAS Number

389574-19-0(HCl Salt)

Prasugrel

Levomepromazine Standard

CAS Number

60-99-1

Alternate CAS Number

1236-99-3(HCl Salt);7104-38-3(Maleate Salt)

Levomepromazine

Lincomycin hydrochloride Standard

CAS Number

859-18-7

Alternate CAS Number

7179-49-9(Monohydrate Salt);154-21-2(Freebase)

Lincomycin

Isradipine Standard

CAS Number

75695-93-1

Isradipine

Hydrocortisone acetate Standard

CAS Number

50-03-3

Hydrocortisone

Repaglinide Impurity-A

CAS Number

220438-80-2

Repaglinide

Repaglinide Impurity-D

CAS Number

147770-06-7

Repaglinide

Regorafenib FP Impurity-A

CAS Number

2514957-39-0

Regorafenib

Regorafenib Impurity-C

CAS Number

1855006-12-0

Regorafenib

Regorafenib Impurity-D

CAS Number

2438857-80-6

Regorafenib

Riboflavin Impurity-D

CAS Number

52134-62-0

Riboflavin

Rifaximin for system suitability CRS

CAS Number

Rifaximin STD-80621-81-4: IMP-H-1210022-90-4

Rifaximin

Rifaximin Impurity-H

CAS Number

1210022-90-4

Rifaximin

Rilmenidine EP Impurity-A

CAS Number

54187-44-9

Rilmenidine

Rilmenidine EP Impurity-B

CAS Number

54187-03-0

Rilmenidine

Rilmenidine EP Impurity-C

CAS Number

Rilmenidine

Gonadorelin Standard

CAS Number

33515-09-2

Alternate CAS Number

34973-08-5(acetate salt);71447-49-9(Diacetate Salt)

Gonadorelin

Flutamide Standard

CAS Number

13311-84-7

Flutamide

Fluvastatin Standard

CAS Number

93957-54-1

Fluvastatin

Fluvoxamine Standard

CAS Number

54739-18-3

Alternate CAS Number

61718-82-9(Maleate Salt)

Fluvoxamine

Fenoterol Standard

CAS Number

13392-18-2

Alternate CAS Number

130156-24-0 (R,R relative stereochemistry), 69421-37-0 (R,R Absolute Stereochemistry);1944-12-3(HBr salt)

Fenoterol

Estriol Standard

CAS Number

50-27-1

Estriol

Adapalene Standard

CAS Number

106685-40-9

Adapalene

Bromazepam for system suitability CRS

CAS Number

Bromazepam STD - 1812-30-2 : IMP - A - 1563-56-0 : IMP - C - 868350-97-4 ;

Bromazepam

Bromocriptine Standard

CAS Number

25614-03-3

Alternate CAS Number

22260-51-1(Mesylate SALT)

Bromocriptine

Fluocortolone pivalate Standard

CAS Number

29205-06-9

Fluocortolone pivalate

Alfuzosin Standard

CAS Number

81403-80-7

Alternate CAS Number

81403-68-1(HCl Salt)

Alfuzosin

Alimemazine Standard

CAS Number

84-96-8

Alternate CAS Number

1936-51-2(HCl Salt);4330-99-8(Tartrate Salt)

Alimemazine

Furosemide Standard

CAS Number

54-31-9

Furosemide

Amidotrizoic acid Standard

CAS Number

117-96-4

Alternate CAS Number

737-31-5(sodium salt);131-49-7(meglumine salt);50978-11-5(Dihydrate)

Amidotrizoic acid

Benserazide Standard

CAS Number

322-35-0;

Alternate CAS Number

14919-77-8(HCl Salt)

Benserazide

Amiloride Standard

CAS Number

2609-46-3

Alternate CAS Number

17440-83-4(Dihydrate HCl - Salt);2016-88-8(HCl salt)

Amiloride

Impurities

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