1,3-Propanediol, 2-ethyl-2-(hydroxymethyl)-1-methyl-, cyclic phosphate (1:1) 2,6,7-Trioxa-1-phosphabicyclo(2.2.2)octane, 4-ethyl-3-methyl-, 1-oxide 4-Ethyl-3-methyl-2,6,7-trioxa-1-phosphabicyclo(2.2.2)octane 1-oxide 82515-37-5