Impurities

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

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

Prednisone Standard

CAS Number

53-03-2

Prednisone

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

Imipramine Standard

CAS Number

50-49-7

Alternate CAS Number

113-52-0(HCl Salt); 10075-24-8(Pamoate Salt)

Imipramine

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

Ceftazidime Standard

CAS Number

72558-82-8

Alternate CAS Number

78439-06-2 (pentahydrate)

Ceftazidime

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

Adapalene Standard

CAS Number

106685-40-9

Adapalene

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

Fludarabine Standard

CAS Number

21679-14-1

Alternate CAS Number

75607-67-9(Phosphate salt)

Fludarabine

Econazole Standard

CAS Number

27220-47-9

Alternate CAS Number

24169-02-6(Nitrate Salt)

Econazole

Enalaprilat Standard

CAS Number

76420-72-9

Alternate CAS Number

84680-54-6(Enalapril Maleate - Impurity C (Dihydrate Salt));84680-54-6(Enalaprilat Dihydrate - API (Dihydrate Salt))

Enalaprilat

Enoxolone Standard

CAS Number

471-53-4

Enoxolone

Atazanavir

CAS Number

198904-31-3(freebase)

Alternate CAS Number

198904-39-1 (HCl salt) ; 1643869-94-6 (HBr salt) ; 229975-97-7 (Sulfate salt)

Atazanavir

Captopril Standard

CAS Number

51781-06-7

Alternate CAS Number

51781-21-6(HCl Salt)

Captopril

Midazolam Standard

CAS Number

59467-70-8

Midazolam

Mianserin Standard

CAS Number

24219-97-4

Alternate CAS Number

21535-47-7(HCl Salt)

Mianserin

Mebeverine Standard

CAS Number

3625-06-7

Alternate CAS Number

2753-45-9(HCl Salt)

Mebeverine

Medroxyprogesterone Standard

CAS Number

520-85-4

Medroxyprogesterone

Mefloquine Standard

CAS Number

53230-10-7

Alternate CAS Number

51773-92-3(HCl Salt)

Mefloquine

Daunorubicin Standard

CAS Number

20830-81-3

Alternate CAS Number

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

Daunorubicin

Orciprenaline Standard

CAS Number

586-06-1

Orciprenaline

Impurities

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