Synthesis of compounds with juvenile hormone activity. XXI. Effect of the molecular chain length on biological activity of juvenile hormone analogs.

Abstract
Twenty six juvenile hormone analogs with various molecular chain length were prepared and bioassayed using allatectornized 4 th instar larvae of Bombyx mori L. Among methyl or ethyl esters, the chain length of 17 atoms is the optimal for the high juvenile hormone activity on the silkworm.