5 6 7 8 tetrahydroquinoline July 8, 2019 16 32 64 128 5 6 7 8-tetrahydroisoquinoline 5 6 7 8-tetrahydronaphthalene-1-carboxylic acid (6r)-5 6 7 8-tetrahydrobiopterin dihydrochloride 5 7-dibromo-8-hydroxyquinoline
