methyl 6-(3-chloro-4-fluorobenzyl)-3,4-dihydroxy-5-oxo-5,6,7,8-tetrahydro-2,6-naphthyridine-1-carboxylate

3-chloro-4,6,7-trimethoxy-furo[2,3-b]quinoline

7-methxyo-9-methyl-1,2,3,4-tetrahydrocarbazole

methyl p-nitrobenzenesulphinate