Piracetam EP Impurity B (Methyl (2-Oxopyrrolidin-1-yl)acetate)
CAS No. 59776-88-4
C7H11NO3
M.W. 157.17

Piracetam EP Impurity C (Ethyl (2-Oxopyrrolidin-1-yl)acetate)
CAS No. 61516-73-2
C8H13NO3
M.W. 171.20

Piracetam EP Impurity D
CAS No. 53934-76-2
C6H9NO3
M.W. 143.14

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