2170761-55-2

(αS)-α-Ethyl-2,5-dihydro-2-oxo-4-propyl-1H-pyrrole-1-acetic Acid is an intermediate in the synthesis of (αS,4R)-α-Ethyl-2-oxo-4-propyl-1-pyrrolidineacetic Acid (E945390) which is an impurity of Brivaracetam (B677645) which is a 4-n-propyl analog of levetiracetam (L331500), and a racetam derivative with anticonvulsant properties.