zaleplon and its Impurities
Zaleplon is used for insomnia. It is known as a nonbenzodiazepine hypnotic. Zaleplon, sold under the brand names Sonata.Reference standards of Zaleplon API,and its pharmacopeial, non pharmacopeial impurities, and stable isotopes are listed below.

![N-(3-(3-(4-Amino-2H-pyrazolo[3,4-d]pyrimidin-6-yl) PA 26 02510](https://www.pharmaffiliates.com/pimages/PA2602510.jpg)
N-(3-(3-(4-Amino-2H-pyrazolo[3,4-d]pyrimidin-6-yl)pyrazolo[1,5-a]pyrimidin-7-yl)phenyl)-N-ethylacetamide
N-(3-(3-(4-Amino-2H-pyrazolo[3,4-d]pyrimidin-6-yl)pyrazolo[1,5-a]pyrimidin-7-yl)phenyl)-N-ethylacetamide
Catalogue No.:PA 26 02510
CAS :
940951-52-0
Molecular Formula : C21H19N9O
Molecular Weight : 413.44


(E)-N-(3-(3-Cyano-6-(3-(3-(N-ethylacetamido)phenyl)-3-oxoprop-1-en-1-yl)pyrazolo[1,5-a]pyrimidin-7-yl)phenyl)-N-ethylacetamide
(E)-N-(3-(3-Cyano-6-(3-(3-(N-ethylacetamido)phenyl)-3-oxoprop-1-en-1-yl)pyrazolo[1,5-a]pyrimidin-7-yl)phenyl)-N-ethylacetamide
Catalogue No.:PA 26 02520
CAS :
940951-61-1
Molecular Formula : C30H28N6O3
Molecular Weight : 520.58