xenobiotic degradation quinoline degradation 1-azanaphthalene degradation pathway Degradation of quinoline, a heterocyclic aromatic organic compound, also known as 1-azanaphthalene, 1-benzazine, or benzo[b]pyridine. Quinoline is an intermediate in metallurgical processes and in dye, polymer, and agrochemical production. It is also a preservative, disinfectant, and solvent. benzo[b]pyridine degradation UPa:UPA00239 1-benzazine degradation