(2R,3S)-3-[(3E)-4,8-Dimethyl-3,7-nonadien-1-yl]-3-methyl-2-oxiranecarboxaldehyde is an intermediate in the synthesis of JHSB3 (J211030). JHSB3 is an acyclic sesquiterpenoid that regulates many aspects of insect physiology. Juvenile Hormone regulate development, reproduction, diapause, and polyphenisms.