o,o,o-Tris(4-methylphenyl) thiophosphate Phosphorothioic acid, O,O,O-tris(4-methylphenyl) ester TRI-P-CRESYL THIOPHOSPHATE TRI-P-TOLYL THIOPHOSPHATE tris(4-methylphenoxy)-sulfanylidene-$l^{5}-phosphane tris(4-methylphenoxy)-thioxo-phosphorane