All
 D02 Organic Chemicals D009930 +
 D02.241 Carboxylic Acids D002264 +
 D02.241.081 Acids, Acyclic D000144 +
 D02.241.081.160 Butyric Acids D002088 +
 D02.241.081.160.050 Aminobutyric Acids D000613 +
 D02.241.081.160.225 Clofibric Acid D002995 +
 D02.241.081.160.240 Crotonic Acids D003438 +
 D02.241.081.160.140 Butyric Acid D020148 +
 D02.241.081.160.400 3-Hydroxybutyric Acid D020155 +