Quinoline, 2-methyl quinoline, 4-methyl quinoline, 6-methyl quinoline, 6-isopropyl quinoline, 2-isobutyl quinoline, 6-sec.butyl quinoline, 6-tert.butyl quinoline, 2-carboxy quinolic acid, quinaldic acid, 6-carboxy quinolic acid, quinoline-6-carboxylic acid, 2-methyl-6-carboxy-quinolic acid, 7-chloro