2.1.4 Nomenclature Common Name and systematic Name CH 4 CHaCH 3 CH3CH2CH ■ Methane Ethane Propane CHa CH,CH,CHCH CHCH CH3 C. N n-butane isobutane ■S.N Butane 2-methylpropane2.1.4 Nomenclature ◼ Common Name and Systematic Name ◼ CH4 CH3CH3 CH3CH2CH3 ◼ Methane Ethane Propane ◼ CH3CH2CH2CH3 CH3CHCH3 ◼ CH3 ◼ C. N. n-butane isobutane ◼ S. N. Butane 2-methylpropane