Compounds with biological roles [BR:br08001] Organic acids Carboxylic acids [Fig] 3-Oxocarboxylic acids C00164 Acetoacetate; 3-Oxobutanoate Lipids [BR:br08002] FA Fatty acyls FA01 Fatty Acids and Conjugates FA0106 Oxo fatty acids C00164 3-Oxobutanoic acid