Hydroxy substituent When-OH is part of a higher priority class of compound, it is named as hydroxy Example OH CH CHCH, COOH also known as GHB 4-hydroxybutanoic acid Chapter 10Chapter 10 9 Hydroxy Substituent • When -OH is part of a higher priority class of compound, it is named as hydroxy. • Example: CH2 CH2 CH2 COOH OH 4-hydroxybutanoic acid also known as GHB =>