10-Chloro-1,4,6,9-tetrahydro-4,6-dioxopyrido(3,2-g)quinoline-2,8-dicarboxylic acid 49635-52-1 NSC 299203 Pyrido(3,2-g)quinoline-2,8-dicarboxylic acid, 10-chloro-1,4,6,9-tetrahydro-4,6-dioxo-