Chitin inhibitor compound is

Chitin inhibitor compound is Dimilin.
Chitin synthesis inhibitors (CSIs) are used to control L. salmonis in aquaculture. CSIs act by interfering with chitin formation and molting.
DIMILIN is a chemical insecticide (growth regulator) that works by preventing the formation of chitin, an important structural component of the outer skin of the larvae. L. dispar caterpillars periodically shed their skin (molt) as they grow, forming new larger skins.