1.4A 0.96A H Unsaturated Alcohols 108.9° H H Hydroxyl group takes precedence.Assign that carbon the lowest number. Use alkene or alkyne name. OH CH2-CHCH-CHCH3 4-penten-2-ol pent-4-ene-2-ol => Chapter 10 Chapter 10 7 Unsaturated Alcohols • Hydroxyl group takes precedence. Assign that carbon the lowest number. • Use alkene or alkyne name. 4-penten-2-ol pent-4-ene-2-ol => CH2 CHCH2 CHCH3 OH