SynonymsButyrolactam; 2-Tetrahydropyrrolone; 2-Pyrrolidone Close Butyrolactam; 2-Tetrahydropyrrolone; 2-Pyrrolidone Related products Piracetam M.F. M.W. 142.16 CAT# AR-P02104 CAS# 7491-74-9 Piracetam-d6 M.F. M.W. 148.19 CAT# AR-P02105 CAS# 7491-74-9 (non-labelled) Povidone EP Impurity B (Piracetam EP Impurity A) M.F. M.W. 85.10 CAT# AR-P02106 CAS# 616-45-5 Piracetam Impuirty B M.F. M.W. 157.17 CAT# AR-P02107 CAS# 59776-88-4 Piracetam Impuirty C M.F. M.W. 171.2 CAT# AR-P02108 CAS# 61516-73-2 Piracetam EP Impurity D M.F. M.W. 143.14 CAT# AR-P02109 CAS# 53934-76-2