150-50-5 Butyl phosphorotrithioite ((BuS)3P) Chemagro B-1776 Deleaf defoliant Easy off-D Folex Merphos NSC27720 Phosphorotrithious acid, S,S,S-tributyl ester Phosphorotrithious acid, tributyl ester S,S,S-Tributyl phosphorotrithioite S,S,S-Tributyl trithiophosphite Tributyl phosphorotrithioite Tributyl trithiophosphite WLN: 4SPS4 & S4