alpha,alpha'-Dibromo-p-xylenep-Xylylene dibromide1,4-Bis(bromomethyl)benzeneα,α′-Dibromo-p-xyleneα,α′-二溴-对二甲苯1,4-Bis(bromomethyl)benzene1,4-二(溴甲基)苯二溴对二甲苯NSC 62261,4-Di(bromomethyl)benzenep-Xylylene Bromide4-Bromomethylbenzyl Bromide1,4-Xylylene Dibromidep-Xylylene dibromide二溴对亚二甲苯