2,3-Dibromopropionitrile4554-16-9100 % similar Dibromoacetonitrile3252-43-538 % similar 1,2,3,4-Tetrabromobutane1529-68-633 % similar 1,1,2-Tribromoethane78-74-033 % similar 1,2,3-Tribromopropane96-11-733 % similar Cyclopropyl cyanide5500-21-032 % similar