SEARCH Articles Figures Tables 1.5- Naphthyridine-3-carboxylates 4-chloro 2- Chloro-3,6-dinitro-l ,8-naphthyridine 2- Chloro-3- -1,8-naphthyridine formation 4- Chloro-3-nitro-l,6-naphthyridine 4-Chloro-8-nitro-1.6-naphthyridine, reduction 4-Chloro-8-nitro-1.6-naphthyridine, reduction chloride