# Biosynthetic butadiene

Contract manufacturing (CMO/CDMO/toll) — Renewable routes to 1,3-butadiene — the C4 monomer for synthetic rubber and ABS plastics — along two competing chemistries: catalytic conversion of bioethanol into butadiene, and gas fermentation of methane.

Source: https://en.bioecon.ru/market/contract-manufacturing/biosynthetic-butadiene/