1,3-dibutyl-2-ethyl-4,5-dimethyl-1,3-diaza-2$l^{5}-phosphacyclopent-4-ene 2-oxide;104728-29-2;1,3,2-Diazaphosphol-4-ene, 2-ethyl-2-oxo-1,3-dibutyl-4,5-dimethyl-
1,3-dibutyl-2-ethyl-4,5-dimethyl-1,3-diaza-2$l^{5}-phosphacyclopent-4-ene 2-oxide