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

Diethyl Chloromalonate

Diethyl Chloromalonate

CAS Number
14064-10-9
Guaifenesin
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Diethyl 2-(2-methoxyphenoxy)malonate

Diethyl 2-(2-methoxyphenoxy)malonate

CAS Number
20730-58-9
Guaifenesin
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Glycerin-1-(4-aminobenzoat)

Glycerin-1-(4-aminobenzoat)

CAS Number
136-44-7
Guaifenesin
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1-Chloro-3-(2-methoxyphenoxy)propan-2-ol

1-Chloro-3-(2-methoxyphenoxy)propan-2-ol

CAS Number
25772-81-0
Alternate CAS Number
NA
Guaifenesin
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O-Desmethyl Guaifenesin

O-Desmethyl Guaifenesin

CAS Number
19826-87-0
Alternate CAS Number
NA
Guaifenesin
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Guaifenesin Carbamate

Guaifenesin Carbamate

CAS Number
145841-69-6
Alternate CAS Number
NA
Guaifenesin
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Gliclazide EP Impurity F

Gliclazide EP Impurity F

CAS Number
1076198-18-9
Alternate CAS Number
NA
Gliclazide
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Gliclazide EP Impurity C

Gliclazide EP Impurity C

CAS Number
5577-13-9
Alternate CAS Number
NA
Gliclazide
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Gliclazide EP Impurity B

Gliclazide EP Impurity B

CAS Number
54786-86-6
Alternate CAS Number
NA
Gliclazide
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Gliclazide EP Impurity A

Gliclazide EP Impurity A

CAS Number
70-55-3
Alternate CAS Number
NA
Gliclazide
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Gepotidacin

Gepotidacin Standard

CAS Number
1075236-89-3
Gepotidacin
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C13H21NO3

Gabapentin Formyl Impurity

CAS Number
NA
Gabapentin
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887589-52-8

1,1-Cyclohexane Diacetic Monoamide

CAS Number
887589-52-8
Gabapentin
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C16H27NO3

Gabapentin Allyl Impurity

CAS Number
NA
Gabapentin
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1500558-49-5

Gabapentin Impurity - G

CAS Number
1500558-49-5
Gabapentin
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99189-60-3

1,1-Cyclohexanediacetic Acid Monoamide

CAS Number
99189-60-3
Gabapentin
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Gabapentin Standard

Gabapentin Standard

CAS Number
60142-96-3
Gabapentin
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316123-26-9

Fosamprenavir Impurity - 2

CAS Number
316123-26-9
Fosamprenavir
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316123-24-7

Fosamprenavir Pyrophosphate

CAS Number
316123-24-7
Fosamprenavir
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Flurbiprofen rac-Menthyl Ester

Flurbiprofen rac-Menthyl Ester

CAS Number
908559-44-4
Alternate CAS Number
NA
Flurbiprofen
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Flurbiprofen EP Impurity D

Flurbiprofen EP Impurity D

CAS Number
42771-79-9
Alternate CAS Number
NA
Flurbiprofen
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Flurbiprofen EP Impurity B

Flurbiprofen EP Impurity B

CAS Number
1797883-74-9
Alternate CAS Number
NA
Flurbiprofen
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Flurbiprofen Related Compound A

Flurbiprofen Related Compound A

CAS Number
6341-72-6
Alternate CAS Number
NA
Flurbiprofen
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Flurbiprofen Sodium

Flurbiprofen Sodium

CAS Number
56767-76-1
Alternate CAS Number
NA
Flurbiprofen
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Flurbiprofen Sodium Dihydrate

Flurbiprofen Sodium Dihydrate

CAS Number
1584155-62-3
Alternate CAS Number
NA
Flurbiprofen
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Flurbiprofen Standard

Flurbiprofen Standard

CAS Number
5104-49-4
Alternate CAS Number
56767-76-1(Na salt)
Flurbiprofen
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104214-18-8

Methyl (4aR,6aS,7S)-4a,6a-dimethyl-2-oxohexadecahydro-1H-indeno[5,4-f]quinoline-7-carboxylate

CAS Number
104214-18-8
Finasteride
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92472-33-8

3-((3S,3aS,5aS,6R,9aS,9bS)-3-(methoxycarbonyl)-3a,6-dimethyl-7-oxododecahydro-1H-cyclopenta[a]naphthalen-6-yl)propanoic acid

CAS Number
92472-33-8
Finasteride
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1800205-94-0

Finasteride Impurity - C

CAS Number
1800205-94-0
Finasteride
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55270-71-8

2-Chloro-4'-hydroxybenzophenone

CAS Number
55270-71-8
Fenofibrate
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42017-89-0

Fenofibric Acid

CAS Number
42017-89-0
Fenofibrate
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1797121-54-0

Fenofibric Acid 1-Carboxyl-1-methylethyl Ester

CAS Number
1797121-54-0
Fenofibrate
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217636-48-1

Fenofibrate EP Impurity - G

CAS Number
217636-48-1
Fenofibrate
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154356-96-4

Fenofibrate Impurity - F

CAS Number
154356-96-4
Fenofibrate
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42019-08-9

Fenofibrate Impurity - E

CAS Number
42019-08-9
Fenofibrate
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259793-96-9

Favipiravir

CAS Number
259793-96-9
Favipiravir
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C5H4ClN3O2

Favipiravir Impurity - 6

CAS Number
259793-90-3
Favipiravir
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1079990-21-8

Favipiravir Impurity-8

CAS Number
1079990-21-8
Favipiravir
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356783-16-9

3,6-Dichloropyrazine-2-carbonitrile

CAS Number
356783-16-9
Favipiravir
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1180525-74-9

2-(Bis(6-chloro-2-methylpyrimidin-4-yl)amino)-N-(2-chloro-6-methylphenyl)thiazole-5-carboxamide

CAS Number
1180525-74-9
Dasatinib
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1184919-23-0

Deschloro Dasatinib

CAS Number
1184919-23-0
Dasatinib
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863127-77-9

Dasatinib Monohydrate

CAS Number
863127-77-9
Dasatinib
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854001-07-3

Dasatinib hydrochloride

CAS Number
854001-07-3
Dasatinib
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1245157-42-9

Dasatinib Hydrolytic Impurity

CAS Number
1245157-42-9
Dasatinib
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910297-51-7

N-Deshydroxyethyl Dasatinib

CAS Number
910297-51-7(free base); 1852573-26-2 (HCl Salt)
Dasatinib
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910297-52-8

Dasatinib N-Oxide

CAS Number
910297-52-8
Dasatinib
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Desogestrel Standard

CAS Number
54024-22-5
Desogestrel
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54024-12-3

Desogestrel EP Impurity B

CAS Number
54024-12-3
Desogestrel
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