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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Posaconazole S,R-Isomer

CAS Number
2243786-02-7
Posaconazole
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Potassium 2-((4-chloro-2-nitrophenyl)amino)benzoate

CAS Number
NA
Clozapine
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Prasugrel Standard

CAS Number
150322-43-3
Alternate CAS Number
389574-19-0(HCl Salt)
Prasugrel
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Prazosin EP Impurity A

CAS Number
23680-84-4
Prazosin
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Prazosin EP Impurity B

CAS Number
31350-27-3
Prazosin
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Prazosin EP Impurity C

CAS Number
60547-97-9
Prazosin
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Prazosin EP Impurity D

CAS Number
40172-95-0
Alternate CAS Number
60548-09-6(HCl)
Prazosin
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Prazosin EP Impurity E

CAS Number
102839-00-9
Prazosin
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Prednisone Standard

CAS Number
53-03-2
Prednisone
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Prednisone Standard

CAS Number
53-03-2
Prednisone
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Pregabalin 3-Carboxymethyl

Pregabalin 3-Carboxymethyl

CAS Number
75143-89-4
Pregabalin
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Pregabalin Impurity D

Pregabalin Impurity - D

CAS Number
4118-51-8
Pregabalin
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Propylene glycol

CAS Number
57-55-6
Propylene glycol
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Propylene glycol

CAS Number
57-55-6
Propylene glycol
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Pteroic Acid

CAS Number
119-24-4
Chemical Primary Standard
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Pyridoxine Diacetate

CAS Number
26280-83-1
Pyridoxine
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Pyridoxine EP Impurity B

CAS Number
61-67-6
Alternate CAS Number
148-51-6(HCl Salt)
Pyridoxine
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Pyridoxine Impurity 2

CAS Number
96181-47-4
Pyridoxine
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Pyridoxine Impurity 3

CAS Number
412940-03-5
Pyridoxine
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Pyridoxine Impurity 6

CAS Number
NA
Pyridoxine
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Pyridoxine Impurity 8

CAS Number
NA
Pyridoxine
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Pyridoxine Standard

CAS Number
65-23-6
Pyridoxine
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Quetiapine EP Impurity A

CAS Number
844639-07-2
Quetiapine
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Quetiapine EP Impurity C

CAS Number
1798840-31-9
Quetiapine
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Quetiapine EP Impurity D

CAS Number
945668-94-0
Quetiapine
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Quetiapine EP Impurity E

CAS Number
1371638-05-9
Quetiapine
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Quetiapine EP Impurity F

CAS Number
848814-27-7
Quetiapine
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Quetiapine EP Impurity H

CAS Number
1076199-40-0
Quetiapine
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Quetiapine EP Impurity I

CAS Number
329216-67-3
Alternate CAS Number
329218-14-6 (2 HCl Salt)
Quetiapine
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Quetiapine EP Impurity J

CAS Number
1356906-17-6
Alternate CAS Number
1825392-15-1 (2HCl salt) ; 2470243-24-2 (Fumarate Salt)
Quetiapine
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Quetiapine S-Oxide Impurity

CAS Number
2448341-72-6
Quetiapine
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Quetiapine Standard

CAS Number
111974-69-7
Quetiapine
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Slide 1.GIF

Rabeprazole Impurity-A

CAS Number
117976-47-3
Rabeprazole
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Slide 1.GIF

Rabeprazole Impurity-H

CAS Number
168167-42-8
Rabeprazole
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22071-15-4

rac Ketoprofen

CAS Number
22071-15-4
Dexketoprofen
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3035190-53-2

rac-Mirabegron Nitroso Impurity

CAS Number
3035190-53-2
Nitrosamine Impurities
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Slide 1.GIF

Racecadotril Impurity-F

CAS Number
87428-99-7
Racecadotril
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Slide 1.GIF

Raltegravir Impurity-F

CAS Number
2138805-56-6
Raltegravir
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Slide 1.GIF

Raltegravir Impurity-G

CAS Number
NA
Raltegravir
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Ramelteon Acetyl impurity

CAS Number
326793-94-6
Ramelteon
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Ramelteon Acrylonitrile

CAS Number
221530-44-5
Ramelteon
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Ramelteon Chiral Amide Impurity

CAS Number
1149757-30-1
Ramelteon
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Ramelteon Dimer Impurity

CAS Number
NA
Ramelteon
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Ramelteon Dimer Impurity 2

CAS Number
NA
Ramelteon
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Ramelteon Double Bond Amide Impurity

CAS Number
1149757-29-8
Ramelteon
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Ramelteon ene amine amide

CAS Number
882434-87-9
Ramelteon
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Ramelteon Impurity 5

CAS Number
1092507-01-1
Ramelteon
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Ramelteon Impurity 6

CAS Number
1185516-79-3
Ramelteon
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