74038-40-7 Di-N-butyl (3,4-dichlorobenzyl) phosphate Dibutyl (3,4-dichlorobenzyl)phosphonate NSC203070 Phosphonic acid, (3,4-dichlorobenzyl)-, dibutyl ester Phosphonic acid, [(3,4-dichlorophenyl)methyl]-, dibutyl ester WLN: GR BG D1PO&O4&O4