3-Cyano-2,6-dichloro-4-trifluoromethylpyridine is used as a reagent in the synthesis of cyano(trifluoromethyl)aminopyridine derivatives which are used as androgen receptor antagonists for stimulating hair growth and reducing sebum production. 3-Cyano-2,6-dichloro-4-trifluoromethylpyridine is also used in the preparation of novel analogs of marine indole alkaloids which are used as potential anticancer agents.