nameofabranchrequiresanumberthatlocatesthebranchonthelongestchain.CH3CHCH2CH2CH2CH3CH32-methylhexaneNamingHydrocarbons•ThefollowingfourIUPACrulesareappliedinnamingthebranched-chainalkanes.4.Whentherearemorethanonealkylbranchofthesamekind,thisnumberisindicatedbyaprefix,suchasdi-,tri-,tetra-,usedwiththenameof...