P,P′-[2-(4-ethenylphenyl)ethylidene]bis-P,P,P′,P′-tetrakis(1-methylethyl) phosphonic acid ester

P,P′-[2-(4-ethenylphenyl)ethylidene]bis-P,P,P′,P′-tetrakis(1-methylethyl) phosphonic acid ester · CAS 1256373-78-0