Patent ID: 9695164
Date: 2017-07-04
CPC Classifications: A61P,C07D

Claim:
1. A pyrroloquinoline quinone disodium salt crystalline Form A, which shows diffraction peaks at the following 2θ angles in an X-ray powder diffraction pattern obtained by Cu—K α radiation: 9.6±0.2°, 11.6±0.2°, 14.9±0.2°, 16.0±0.2°, 18.8±0.2°, 19.4±0.2°, 20.4±0.2°, 21.9±0.2°, 22.7±0.2°, 23.2±0.2°, 25.6±0.2°, 33.7±0.2°, 35.0±0.2°, 35.8±0.2°, 36.7±0.2°, 38.0±0.2°, and 38.6±0.2°.