Denka Co. Ltd. (TYO:4061) recently announced that it has decided to supply diethyl malonate, a raw material for anti-flu drug Avigan, in response to a request from the Japanese government. Also known as favipiravir, Avigan is being touted as a potential treatment for COVID-19 patients. This diethyl malonate production is slated to start in May at Denka’s Omi Plant in…