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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Nifedipine Nitroso Impurity

CAS Number
NA
Nifedipine
Nitrosamine Impurities
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Oxcarbazepine Impurity 2

CAS Number
4014-77-1
Oxcarbazepine
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Oxcarbazepine EP Impurity D

CAS Number
19579-83-0
Oxcarbazepine
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N-Nitroso Oxcarbazepine EP Impurity D

CAS Number
NA
Oxcarbazepine
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N-Nitroso Oxcarbazepine EP Impurity H

CAS Number
NA
Oxcarbazepine
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Oxcarbazepine EP Impurity M

CAS Number
2642430-32-6
Oxcarbazepine
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Oxcarbazepine EP Impurity E

CAS Number
256-96-2
Oxcarbazepine
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Oxprenolol Standard

CAS Number
6452-71-7
Alternate CAS Number
6452-73-9(HCl Salt)
Oxprenolol
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Quetiapine S-Oxide Impurity

CAS Number
2448341-72-6
Quetiapine
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Regorafenib EP Impurity B

CAS Number
2141961-84-2
Regorafenib
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Regorafenib N-Oxide Impurity

CAS Number
835621-11-9
Regorafenib
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26872-48-0

Indacaterol Impurity 2

CAS Number
26872-48-0
Indacaterol
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2598-31-4

Indacaterol Impurity 3

CAS Number
2598-31-4
Indacaterol
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148-24-3

Indacaterol Impurity 4

CAS Number
148-24-3(free base)
Alternate CAS Number
134-31-6(sulfate salt);207386-91-2(hemisulfate hemihydrate salt)
Indacaterol
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312753-50-7

Indacaterol Impurity 6

CAS Number
312753-50-7
Indacaterol
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135-01-3

Indacaterol Impurity 7

CAS Number
135-01-3
Indacaterol
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Ketorolac EP Impurity D

CAS Number
1391053-45-4
Ketorolac
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Ketorolac EP Impurity C

CAS Number
1026936-07-1
Ketorolac
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Fingolimod Impurity VII

CAS Number
162358-62-5
Fingolimod
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Fosamprenavir Impurity 1

CAS Number
NA
Fosamprenavir
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316123-26-9

Fosamprenavir Impurity 2

CAS Number
316123-26-9
Fosamprenavir
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N-Nitroso Flecainide

CAS Number
2901109-58-6
Nitrosamine Impurities
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1079990-21-8

Favipiravir Impurity 8

CAS Number
1079990-21-8
Favipiravir
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Favipiravir Impurity 7

CAS Number
2809442-05-3
Favipiravir
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Minoxidil EP Impurity A

CAS Number
35139-67-4
Minoxidil
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Minoxidil EP Impurity B

CAS Number
156-83-2
Minoxidil
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Minoxidil EP Impurity E

CAS Number
24867-26-3
Minoxidil
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N-Nitroso Levofloxacin

CAS Number
1152314-62-9
Levofloxacin
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Lidocaine BP Impurity A

Lidocaine EP Impurity A

CAS Number
87-62-7(freebase)
Alternate CAS Number
21436-98-6(salt)
Lidocaine
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Tizanidine Impurity 1

CAS Number
95-83-0
Tizanidine
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Tizanidine Impurity 2

CAS Number
89-63-4
Tizanidine
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Trihexyphenidyl Standard

CAS Number
144-11-6
Alternate CAS Number
52-49-3(HCl Salt)
Trihexyphenidyl
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Trihexyphenidyl EP Impurity A

CAS Number
73-63-2
Alternate CAS Number
886-06-6(HCl Salt)
Trihexyphenidyl
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Tafamidis Impurity 2

CAS Number
2789-92-6
Tafamidis
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Tegafur Standard

CAS Number
17902-23-7
Tegafur
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Tramadol N-Oxide

CAS Number
147441-56-3
Tramadol
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Tranexamic Acid EP Impurity A

CAS Number
93940-19-3
Tranexamic Acid
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N-Nitroso Meglumine

CAS Number
10356-92-0
Nitrosamine Impurities
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Metopimazine Nitroso Impurity

CAS Number
1254360-38-7
Metopimazine
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