摘要:
Disclosed is the 1:1 phosphate salt of Compound (I) as well as a novel crystal form thereof. Also disclosed is a novel crystal form of Compound (I). The present invention also provides methods of increasing the activity of HMOX-1 in a subject, of activating transcription factor Nrf2 in a subject or of reducing the amount of ROS in a subject by administering an effective amount of the 1:1 phosphate salt of Compound (I), the crystal form thereof or the crystal form of Compound (I) to the subject.