Notice Concerning Completion of Acquisition of All Shares of hakkai inc.

New Page: Contract Manufacturing Services

Otsuka Chemical Begins CO₂ Capture and Circular Utilization Demonstration Experiment
- Conducted at Tokushima Plant in Collaboration with OOYOO Ltd.

Otsuka Group Selected for CDP Climate Change A List for a Third Consecutive Year

Notice of Complete Renewal of Otsuka Chemical’s Website

Otsuka Chemical Appointments of Board Members and Statutory Auditors

Otsuka Chemical’s New Cogeneration System Started Operation at Its Tokushima Factory

Donations to Support Relief Efforts Following the Noto Peninsula Earthquake

SynCrest Launches CRDMO Service for Peptide-based Therapeutics

Otsuka Chemical and Yokogawa Electric to Launch SynCrest Inc., a Joint Venture Targeting the CRDMO Business for Middle-molecular Drugs