1nicotine, pyridine /piperidine
2arecoline, pyridine /piperidine
10hydrastine, isoquinoline
11tubocurarine , isoquinoline
13yohimbine , indole alkaloids
14strychnine, indole alkaloids
15reserpine, indole alkaloids
16ergonovine, indole alkaloids
17pilocarpine , imidazole
18protoveratrine, steroidal
19ephedrine , alkaloidal amines
20caffeine , purine bases
21theophylline, purine bases
22theobromine , purine bases
23hydrocarbon, turpentine
24hydrocarbon, turpentine
25alcohol, peppermint oil
31ester, oil of wintergreen