Chitinase-IN-1 is an insect chitinase and N- acetyl hexosaminidase inhibitor and pesticide.

Chitinase-IN-2 hydrochloride functions as an inhibitor of both insect chitinase and N-acetyl hexosaminidase, and also serves as a pesticide. At concentrations of 50 µM and 20 µM, it demonstrates inhibitory effectiveness of 98% and 92% against chitinase and N-acetyl-hexosaminidase, respectively.

ZK-PI-9 acts as an inhibitor of both trehalase and chitinase activities in female pupae and functions as an insecticide [1].

Argadin, a cyclopentapeptide chitinase inhibitor, effectively inhibits chitinase B (ChiB) with a K i value of 20 nM. It holds potential for research in fungicide and insecticide applications [1] [2].

EP4 antagonist 14 is a prostaglandin E2 receptor subtype EP4 antagonist, demonstrating an IC50 of 1.1 nM in a HEK293 human receptor reporter assay and blocking β-arrestin recruitment due to PGE2 with an IC50 of 0.9 nM. At 10 µM, it reduces PGE2-stimulated mRNA levels of Il-4, macrophage mannose receptor 1 (Mrc1), chitinase-like protein 3 (Chil3), chemokine (C-X-C) motif ligand 1 (Cxcl1), triggering receptor expressed on myeloid cells 2 (Trem2), and arginase-1 (Arg1) in RAW 264.7 macrophages. When used at 30 mg/kg per day alongside anti-PD-1 antibodies, it curbs tumor growth and enhances CD8+ T cell infiltration in tumors using a CT26 murine colon cancer model.

Chitinase has partial lysozyme activity and is widely found in bacteria, fungi, animals and some plants . Chitinase belongs to the glycosyl hydrolase family. Chitinase catalyzes chito-oligosaccharide hydrolysis [1] .