13033-91-5 3-Ethyl-5-((3-ethylbenzoxazol-2(3H)-ylidene)ethylidene)-1-phenyl-2-thioxoimidazolidin-4-one 4-Imidazolidinone, 3-ethyl-5-((3-ethyl-2(3H)-benzoxazolylidene)ethylidene)-1-phenyl-2-thioxo- EINECS 235-896-4