7040-57-5 BRN 2076660 CCRIS 5731 Chlorosoman Methylphosphonochloridic acid 1,2,2-trimethylpropyl ester O-Pinacolyl methylphosphonochloridate Phosphonochloridic acid, methyl-, 1,2,2-trimethylpropyl ester Pinacolyl methylphosphonochloridate