Patent ID: 9000126
Filing Date: 2015-04-07
Classification: C07K,C30B

Abstract:
1. A process for producing a crystal of oxidized glutathione hexahydrate having peaks at a diffraction angle (2θ) of 8.12°, 9.70°, 10.62°, 12.44°, 14.20°, 16.22°, 16.38°, 17.90°, 18.90°, 19.52°, 20.26°, 21.32°, 21.60°, 22.82°, 23.34°, 24.40°, 24.72°, 24.98°, 25.56°, 26.18°, 26.68°, 27.20°, 28.32°, 29.00°, 29.66°, 31.02°, 31.58°, 32.20°, 32.72°, 32.88°, 34.48° and 41.56° in powder X-ray diffraction comprising cooling an aqueous solution containing oxidized glutathione to 15° C. or lower to precipitate a crystal of oxidized glutathione hexahydrate, and then collecting the crystal of oxidized glutathione hexahydrate from the aqueous solution.