a,
- C3H4:
CH2=C=CH2: propađien
- C4H6:
CH2=C=CH−CH3: buta-1,2-đien
CH2=CH−CH=CH2: buta-1,3-đien
- C5H8:
CH2=C=CH−CH2−CH3: penta-1,2-đien
CH2=CH−CH=CH−CH3: penta-1,3-đien
CH2=CH−CH2−CH=CH2: penta-1,4-đien
CH3−CH=C=CH−CH3: penta-2,3-đien
CH2=C(CH3)−CH=CH2: 2-metylbuta-1,3-đien
CH3−C(CH3)=C=CH2: 3-metylbuta-1,2-đien