Type Substrate

11 - Adrenergic-Receptor-ligand
12 - Aliphatic polyester
13 - Alkaloid
14 - Alkenyl ester
15 - Alkyl ester
16 - Amidase substrate
17 - Aminopurin
18 - Analogue of substrate
19 - Angiotensin-converting enzyme inhibitor
20 - Angiotensin-receptor blocker