Impurities

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

3',4'-Dichloropropiophenone

CAS Number

6582-42-9

Chemical Primary Standard

Cyclobenzaprine

CAS Number

303-53-7

Chemical Primary Standard

2-(2-Chloroethoxy)ethanol

CAS Number

628-89-7

Chemical Primary Standard

Desloratadine

CAS Number

100643-71-8

Chemical Primary Standard

2-(Methylamino)ethanol

CAS Number

109-83-1

Chemical Primary Standard

Benzophenone

CAS Number

119-61-9

Chemical Primary Standard

Methyl 2-(3-(4-Chlorobutanoyl)phenyl)-2-methylpropanoate

CAS Number

343255-26-5

Chemical Primary Standard

4-Aminophenol

CAS Number

123-30-8

Chemical Primary Standard

2-Chloro-1-isocyanato-3-(trifluoromethyl)benzene

CAS Number

88330-63-6

Chemical Primary Standard

Adapalen Standard

CAS Number

106685-40-9

Adapalene

[2′-(1H-Tetrazol-5-yl)biphenyl-4-yl]methanol

CAS Number

160514-13-6

Chemical Primary Standard

Fumaric acid

CAS Number

110-17-8

Alternate CAS Number

141-01-5(Fumarate Salt);

Chemical Primary Standard

2-Butyl-4-chloro-1H-imidazole-5-carbaldehyde

CAS Number

83857-96-9

Chemical Primary Standard

Thioridazine Standard

CAS Number

50-52-2

Thioridazine

Folic acid Standard

CAS Number

59-30-3

Folic Acid

Clobetasol propionate Standard

CAS Number

25122-46-7

Clobetasol propionate

Chlortetracycline Standard

CAS Number

57-62-5

Chlortetracycline

Chloroxylenol Standard

CAS Number

88-04-0

Chloroxylenol

Amiloride Standard

CAS Number

2609-46-3

Amiloride

Zanamivir Impurity-E

CAS Number

Zanamivir

Zidovudine Impurity-B

CAS Number

25526-94-7

Zidovudine

Zolmitriptan Impurity-C

CAS Number

1350928-05-0

Zolmitriptan

Vortioxetine Hemi Benzyl alcohol Hydrobromide

CAS Number

1793058-29-3

Vortioxetine

Tedizolid Dimethoxy Impurity

CAS Number

2810004-05-6

Tedizolid

Benazepril Standard

CAS Number

86541-75-5

Benazepril

Terazosin Standard

CAS Number

63590-64-7

Alternate CAS Number

70024-40-7(HCl Dihydrate salt); 63074-08-8(HCl salt)

Terazosin

Benserazide Standard

CAS Number

322-35-0

Benserazide

Terazosin Hydrochloride Standard

CAS Number

63074-08-8

Alternate CAS Number

70024-40-7(HCl Dihydrate salt);63590-64-7(Freebase)

Terazosin

Benzalkonium Chloride Standard

CAS Number

8001-54-5

Benzalkonium chloride

Terbinafine Standard

CAS Number

91161-71-6

Alternate CAS Number

78628-80-5(HCl Salt)

Terbinafine

Terbinafine Impurity-B

CAS Number

78628-81-6

Terbinafine

Clotrimazole Standard

CAS Number

23593-75-1

Clotrimazole

Rizatriptan Impurity-C

CAS Number

208941-96-2

Rizatriptan

Ceftazidime Standard

CAS Number

72558-82-8

Ceftazidime

Ceftazidime Pentahydrate Standard

CAS Number

78439-06-2

Ceftazidime

Chlorhexidine Standard

CAS Number

55-56-1

Chlorhexidine

Chlorhexidine Dihydrochloride Standard

CAS Number

3697-42-5

Chlorhexidine

Colchicine Hydrochloride

CAS Number

34371-48-7

Colchicine

Teriparatide Standard

CAS Number

52232-67-4

Teriparatide

Testosterone Impurity-C

CAS Number

481-30-1

Testosterone

Testosterone Impurity-G

CAS Number

897-06-3

Testosterone

Testosterone Impurity-K

CAS Number

2608628-54-0

Testosterone

Desloratadine Standard

CAS Number

100643-71-8

Desloratadine

Temazepam Impurity-A

CAS Number

1022-13-5

Temazepam

Temazepam Impurity-G

CAS Number

93329-92-1

Temazepam

Temazepam Impurity-E

CAS Number

2888-64-4

Temazepam

Temazepam Impurity-B

CAS Number

604-75-1

Temazepam

Chloroquine Hydrochloride

CAS Number

6165-15-7

Chloroquine phosphate

Impurities

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