35051-49-1 BRN 1965263 NSC 92299 Pentanoic acid, 2-(diethoxyphosphinyl)-, ethyl ester (9CI) Phosphonic acid, alpha-carbethoxybutyl-, diethyl ester Valeric acid, 2-(diethylphosphono)-, ethyl ester alpha-Carbethoxybutylphosphonic acid, diethyl ester