5-Bromo-4,7-diazaindole

2-Bromo-5-tosyl-5H-pyrrolo[2,3-b]pyrazine

Tert-butyl (5-tosyl-5H-pyrrolo[2,3-b]pyrazin-2-yl)carbamate

(3R,4S)-1-((benzyloxy)carbonyl)-4-ethylpyrrolidine-3-carboxylic acid Dicyclohexylamine Salt

(3R,4S)-3-(2-Bromoacetyl)-4-ethyl-1-pyrrolidinecarboxylic acid phenylmethyl ester