1,2-Dibromo-2,4-dicyanobutane1,2-二溴-2,4-二氰基丁烷1,2-Dibromo-2,4-dicyanobutane2-Bromo-2-(bromomethyl)glutaronitrile1-Bromo-1-(bromomethyl)-1,3-propanedicarbonitrile甲基二溴戊二腈Methyldibromoglutaronitrile2-溴-2-(溴甲基)戊二腈1-溴-1-(溴甲基)-1,3-丙烷二甲腈1,2-二溴-2,4-二氰丁烷1,2-Dibromo-2,4-dicyanobutane