Denka to Supply Raw Materials for Potential COVID-19 Treatment Avigan on April 14, 2020 in Coronavirus, Materials Denka Co. Ltd. (TYO:4061) recently announced that it has decided to supply diethyl malonate, a raw material for anti-flu drug…... Membership Required You must be a member to access this content.View Membership LevelsAlready a member? Log in here Continue Reading