US Patent Issued to Evonik Operations on Aug. 25 for "Process for the diastereomerically pure preparation of DL/LD-methionylmethionine" (German, Belgian Inventors)

ALEXANDRIA, Va., Aug. 25 -- United States Patent no. 12,715,848, issued on Aug. 25, was assigned to Evonik Operations GmbH (Essen, Germany).

"Process for the diastereomerically pure preparation of DL/LD-methionylmethionine" was invented by Sascha Braune (Dossenheim, Germany), Geert Van Eester (Antwerp, Belgium), Hans-Joachim Hasselbach (Gelnhausen, Germany) and Claudia Dyballa (Munich).

According to the abstract* released by the U.S. Patent & Trademark Office: "The invention relates in particular to a process for the preparation of DL/LD-methionine diketopiperazine (I) characterized in that a DD/LL-methionylmethionine-containing aqueous solution or suspension, which has a pH of 3 to 7, measured using a pH electrode at 20deg C., is reacted...