Denka Co. Ltd. (TYO:4061) recently began production of diethyl malonate for use in Avigan, a potential COVID-19 treatment known also by the generic name of favipiravir. This production began on May 16 at the chemical company and chloroprene rubber producer’s Omi Plant in Itoigawa, Niigata Prefecture. Denka sees itself as having a social responsibility to help out with measures against…