proline and its Impurities
An α-amino acid which is a derivative of L-glutamate. Proline is used in the biosynthesis of proteins. It is a precursor (with vitamin C) for collagen, and also helps in healing wounds.Reference standards of Proline API,and its pharmacopeial, non pharmacopeial impurities, and stable isotopes are listed below.

![(1S,3aR,6aS)-Hexahydro-cyclopenta[c]pyrrole-1,2(1H PA 43 0211005](https://www.pharmaffiliates.com/pimages/PA430211005.jpg)
(1S,3aR,6aS)-Hexahydro-cyclopenta[c]pyrrole-1,2(1H)-dicarboxylic Acid 2-(tert-Butyl) Ester 1-methyl ester
(1S,3aR,6aS)-Hexahydro-cyclopenta[c]pyrrole-1,2(1H)-dicarboxylic Acid 2-(tert-Butyl) Ester 1-methyl ester
Catalogue No.:PA 43 0211005
CAS :
1042330-85-7
Molecular Formula : C14H23NO4
Molecular Weight : 269.34