Pyridine series

3'5'-DICHLOROACETOPHENONE

2,4,5,6-Tetraamino pyrimidine

2-Bromo-5-Chloropyridine

4-Nitrobenzonitrile

5-Chloro-2-cyanopyridine 

Mecobalamine

BOC-D-TIC-OH

(S)-N-Boc-3-bromophenylalanine

5-Hydroxy-2-methylindole

4-Methoxy-1h-indole-2-carboxyl

2,2,4,6,7-Pentamethyldihydrobe

2,6-Dichloro-4-hydroxypyridine