ALEXANDRIA, Va., July 7 -- United States Patent no. 12,673,955, issued on July 7, was assigned to CRYSTAL PHARMATECH Co. LTD. (Suzhou, China).
"Crystal form of p-toluenesulfonate salt of diazabicyclic compound and preparation method therefor" was invented by Xia Lu (Suzhou, China) and Xiaoyu Zhang (Suzhou, China).
According to the abstract* released by the U.S. Patent & Trademark Office: "The present disclosure relates to a novel crystalline form of a tosylate of diazadicyclic compound of formula (I), preparation method therefor, a pharmaceutical composition containing the crystal form, and the use of the crystal form in the preparation of a drug for treating alopecia areata, psoriasis and ulcerative colitis."
The patent was filed on Jun...