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

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Acetazolamide EP Impurity F

CAS Number
80495-47-2
Acetazolamide
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5-Tert-butyl-N-methyl-1,3,4-thiadiazol-2-amine

CAS Number
50608-12-3
Acetazolamide
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Aciclovir EP Impurity G

CAS Number
75128-73-3
Acyclovir
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Acetylsalicylic Acid EP Impurity A

CAS Number
99-96-7
Acetylsalicylic acid
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Acetylsalicylic Acid EP Impurity B

CAS Number
636-46-4
Acetylsalicylic acid
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Acetylsalicylic Acid EP Impurity C

CAS Number
69-72-7
Acetylsalicylic acid
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Acetylsalicylic Acid EP Impurity F

CAS Number
1466-82-6
Acetylsalicylic acid
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Methyl 5-Acetylsalicylate

CAS Number
16475-90-4
Acetylsalicylic acid
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Aciclovir EP Impurity B

CAS Number
73-40-5
Alternate CAS Number
635-39-2(HCl Salt);10333-92-3(Sulphate Salt)
Acyclovir
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Aciclovir EP Impurity F

CAS Number
110104-37-5
Acyclovir
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Aciclovir EP Impurity J

CAS Number
166762-90-9
Acyclovir
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Aciclovir EP Impurity K

CAS Number
1797131-64-6
Acyclovir
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Aciclovir EP Impurity L

CAS Number
3056-33-5
Acyclovir
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Aciclovir EP Impurity M

CAS Number
91702-60-2
Acyclovir
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Aciclovir EP Impurity P

CAS Number
23169-33-7
Acyclovir
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Aciclovir EP Impurity R

CAS Number
NA
Acyclovir
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Fruquintinib Standard

CAS Number
1194506-26-7
Fruquintinib
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Linagliptin EP Impurity A

CAS Number
668270-11-9
Linagliptin
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Sitagliptin Styrylacetyl Analog

CAS Number
1803026-58-5
Sitagliptin
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5-Chloro-2-nitroaniline

CAS Number
1635-61-6
Chemical Primary Standard
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N-Nitroso Bilastine Impurity 5

CAS Number
NA
Nitrosamine Impurities
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