IUPAC Names The more complex alkyl group is the alkane name.The small group (with the oxygen) becomes an "alkoxy"group. CH3 O-CH3 CH3-O-C-CH3 CH3 2-methyl-2-methoxypropane Methoxycyclohexane Chapter 14 10 Chapter 14 10 IUPAC Names • The more complex alkyl group is the alkane name. The small group (with the oxygen) becomes an “alkoxy” group. 2-methyl-2-methoxypropane Methoxycyclohexane CH3 O C CH3 CH3 CH3 O CH3