1,2-Benzenedicarboxylic acid, mono(2-ethyl-5-oxohexyl) ester 40321-98-0 CCRIS 4431 Mono(2-ethyl-5-oxohexyl) 1,2-benzenedicarboxylate Mono(2-ethyl-5-oxohexyl) phthalate Mono(2-ethyl-5-oxohexyl)phthalate