A New Crystalline form of acid, N - 4 - 2 - (2 - amino - 4.7 - dihydro - 4 - oxo - 3h pyrrolo 2,3-d pyrimidin-5-yl) ethyl benzoyl - l-glutamic acid and Process for its preparation Ref X - 11969.

摘要

The Invention relates to the field of pharmaceutical Chemistry and organic and provides an improved procedure for preparing the new Crystalline Salt, HEPTAHYDRATE of antifolate multipronged acid n - [4 - [2 - (2 - amino - 4.7 - dihydro - 4 - oxo - 3h pyrrolo [2,3-d] pyrimidin-5-yl) ethyl] benzoyl] - l-glutamic acid.