73940-87-1 Bis(triphenyltin)acetylenedicarboxylate Ethynylenebis(carbonyloxy)bis(triphenylstannane) NSC 203181 Stannane, ((1,4-dioxo-2-butyne-1,4-diyl)bis(oxy))bis(triphenyl- (9CI) Stannane, ethynylenebis(carbonyloxy)bis(triphenyl-