CH2=CH-CH2-CH2-CH2-CH3 ; CH3-CH=CH-CH2-CH2-CH3 (cis + trans)
CH3-CH2-CH=CH-CH2-CH3 (cis + trans)
CH2=C(CH3)-CH2-CH2-CH3 ; CH2=CH-CH(CH3)-CH2-CH3 ;
CH2=CH-CH2-CH(CH3)-CH3; CH3-C(CH3)=CH-CH2-CH3;
CH3-C(CH3)=C(CH3)-CH3; CH3-CH=C(CH3)-CH2-CH3 (cis si trans);