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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Tafamidis Standard

CAS Number
594839-88-0
Tafamidis
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Tafamidis Impurity 10

CAS Number
1018498-30-0
Tafamidis
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Tafamidis Meglumine

CAS Number
951395-08-7
Tafamidis
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Tafamidis Impurity 3

CAS Number
1184581-58-5
Tafamidis
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Tafamidis Impurity 6

CAS Number
1395964-06-3
Tafamidis
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Tafamidis Impurity 4

CAS Number
1507158-86-2
Tafamidis
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Tafamidis Impurity 24

CAS Number
NA
Tafamidis
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1074365-84-6

Apixaban Methyl Ester Impurity

CAS Number
1074365-84-6
Apixaban
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(Z)-Ethyl 2-chloro-2-(2-(3-methoxyphenyl)hydrazono)acetate

CAS Number
405872-78-8
Apixaban
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3-Chloro-1-(4-nitrophenyl)piperidin-2-one

3-Chloro-1-(4-nitrophenyl)piperidin-2-one

CAS Number
2512213-45-3
Apixaban
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Valsartan Related Compound B

CAS Number
952652-79-8
Valsartan
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Valsartan Ethyl ester

CAS Number
1111177-30-0
Valsartan
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Azithromycin EP Impurity - E

CAS Number
612069-27-9
Azithromycin
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Azithromycin EP Impurity - F

CAS Number
612069-28-0
Azithromycin
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Azithromycin EP Impurity - G

CAS Number
612069-31-5
Azithromycin
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Azithromycin EP Impurity - H

CAS Number
612069-30-4
Azithromycin
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Venlafaxine EP Impurity B

CAS Number
323176-93-8
Alternate CAS Number
2174001-92-2(HCl Salt)
Venlafaxine
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Azithromycin EP Impurity - L

CAS Number
90503-06-3
Azithromycin
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Azithromycin EP Impurity - I

CAS Number
172617-84-4
Azithromycin
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Venlafaxine EP Impurity D

Venlafaxine EP Impurity - D

CAS Number
93413-90-2
Alternate CAS Number
149289-30-5(Freebase)
Venlafaxine
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Azithromycin EP Impurity - J

CAS Number
117693-41-1
Azithromycin
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Azithromycin EP Impurity - M

CAS Number
765927-71-7
Azithromycin
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Azithromycin EP Impurity - N

CAS Number
612069-25-7
Azithromycin
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Azithromycin EP Impurity - O

CAS Number
763924-54-5
Azithromycin
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Venlafaxine EP Impurity F

Venlafaxine EP Impurity - F

CAS Number
93413-79-7(Salt)
Alternate CAS Number
93413-57-1(Freebase)
Venlafaxine
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Acenocoumarol Standard

CAS Number
152-72-7
Acenocoumarol
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Allopurinol Related Compound - D

Allopurinol Related Compound - D

CAS Number
6994-25-8
Allopurinol
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Allopurinol Related compound - B

Allopurinol Related compound - B

CAS Number
22407-20-1
Allopurinol
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Allopurinol Related compound - C

Allopurinol Related compound - C

CAS Number
1346604-13-4
Allopurinol
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Allopurinol Related Compound - F

Allopurinol Related Compound - F

CAS Number
321571-07-7
Allopurinol
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6296-53-3

N-(1,3-Dioxo-1,3-dihydroisobenzofuran-4-yl)acetamide

CAS Number
6296-53-3
Apremilast
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Venetoclax-N-Oxide

Venetoclax-N-Oxide

CAS Number
2469279-00-1
Venetoclax
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N-Desacetyl O4-Desmethyl Apremilast

CAS Number
1384440-16-7
Apremilast
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Viloxazine Impurity 2

CAS Number
NA
viloxazine
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Apremilast Impurity 4

CAS Number
1407140-51-5
Apremilast
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635705-72-5

Des-acetyl Apremilast

CAS Number
635705-72-5
Apremilast
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1831833-38-5

2-Ethoxy-1-methoxy-4-(2-methyl sulfonylethenyl) benzene

CAS Number
1831833-38-5
Apremilast
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1384439-80-8

N-Desacetyl O4-desmethyl O3-desethyl apremilast

CAS Number
1384439-80-8
Apremilast
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Axitinib 2-Methyl-5-Nitroaniline Impurity

Axitinib 2-Methyl-5-Nitroaniline Impurity

CAS Number
99-55-8
Axitinib
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Axitinib Des Iodo Analog

Axitinib Des Iodo Analog

CAS Number
2242852-05-5
Axitinib
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Ambrisentan Decarboxylate Impurity

Ambrisentan Decarboxylate Impurity

CAS Number
1639429-81-4
Ambrisentan
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Ambrisentan Impurity-D

Ambrisentan Impurity-D

CAS Number
178306-52-0
Ambrisentan
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Abiraterone Standard

Abiraterone Standard

CAS Number
154229-19-3
Abiraterone
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Ambroxol Hydrochloride Standard

CAS Number
23828-92-4
Alternate CAS Number
18683-91-5(Freebase)
Ambroxol
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1797983-65-3

Aripiprazole N-Isomer Impurity

CAS Number
1797983-65-3
Aripiprazole
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Acetazolamide Impurity - B

CAS Number
5393-55-5
Acetazolamide
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Benazepril Standard

CAS Number
86541-75-5
Alternate CAS Number
86541-74-4(HCl Salt)
Benazepril
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Benazepril Related Compound E

CAS Number
88372-47-8
Benazepril
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