Compounds with biological roles [BR:br08001] Organic acids Carboxylic acids [Fig] Hydroxycarboxylic acids C00989 4-Hydroxybutanoate Lipids [BR:br08002] FA Fatty acyls FA01 Fatty Acids and Conjugates FA0105 Hydroxy fatty acids C00989 4-Hydroxybutanoic acid Drug groups [BR:br08330] Neuropsychiatric agent DG02030 Anesthetics DG02027 General anesthetics DG00798 Hydroxybutyric acid C00989 4-Hydroxybutanoic acid