US Patent Issued on Feb. 11 for "Crystalline salt of 5-methyl-(6S)-tetrahydrofolic acid and L-isoleucine ethyl ester" (Swiss Inventors)

ALEXANDRIA, Va., Feb. 12 -- United States Patent no. 12,221,446, issued on Feb. 11.

"Crystalline salt of 5-methyl-(6S)-tetrahydrofolic acid and L-isoleucine ethyl ester" was invented by Rudolf Moser (Schaffhausen, Switzerland), Viola Groehn (Dachsen, Switzerland), Ruth Boehni Stamm (Stein Am Rhein, Switzerland), Fritz Blatter (Reinach, Switzerland) and Martin Szelagiewicz (Basel, Switzerland).

According to the abstract* released by the U.S. Patent & Trademark Office: "The present invention is directed to a crystalline salt of 5-methyl-(6S)-tetrahydrofolic acid and L-isoleucine ethyl ester wherein the molar ratio of 5-methyl-(6S)-tetrahydrofolic acid to L-isoleucine ethyl ester is from 1:0.3 to 1:2.0 (in mol/mol) and/or hydrates and/or sol...