Argifin is a sub-nanomolar chitinase inhibitor produced by soil microorganisms (IC50: 0.025 μM, 6.4 μM, 1.1 μM, and 4.5 μM for SmChiA [Serratia marcescens chitinase A], SmChiB, Aspergillus fumigatus chitinase B1, and human chitotriosidase).
Chitopentaose pentahydrochloride is an anti-inflammatory chitosan oligosaccharide that functions as a substrate for the gene encoding chitinase B (FjchiB).
Lynamicin B, a promising pesticide, functions as a selective chitinase inhibitor exclusive to lepidoptera. It exhibits a Ki value of 8.76 μM, indicating its potential efficacy.