Synthesis Pathway of 2-hexenal (IMAGE) Kobe University Caption Figure 2. Synthesis pathway of 2-hexenal. Other enzymes have already been identified. Credit Kobe University Usage Restrictions None License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.