Invented is the compound (5Z)-5-(6-quinoxalinylmethylidene)-2-[(2,4,6-trichlorophenyl)amino]-1,3-thiazol-4(5H)-one, and pharmaceutically acceptable salts, hydrates, solvates and pro-drugs thereof. Also invented are pharmaceutical compositions containing this compound, methods of preparing this compound and pharmaceutically acceptable salts, hydrates, solvates and pro-drugs thereof. Also invented are methods of using this compound as an inhibitor of hYAK3 proteins.
