form iii crystals of n alpha - (((s) - 4 - oxo - 2 - azetidinyl) carbonyl) - l - histidyl - l - prolinamid and procedure for the production of crystals.

摘要

The invention provides a crystallization procedure for forming novel crystalline N alpha -[[(S)-4-oxo-2-Azetidinyl]-Carbonyl]-L-Histidyl-L-prolinamide dihydrate which is stable at ambient temperature and humidity and so is advantageous for storage, handling and medicament formulation.