1,3-Bis(bromomethyl)-1,1,3,3-tetramethyldisiloxane 1,3-Bis(bromomethyl)tetramethyldisiloxane 2351-13-5 Bis(bromomethyl)tetramethyldisiloxane Disiloxane, 1,3-bis(bromomethyl)-1,1,3,3-tetramethyl- EINECS 219-083-1 NSC 139825