2 methyl 1 2 3 4 tetrahydroquinoline July 8, 2019 16 32 64 128 6 methyl 1 2 3 4 tetrahydroquinoline 2-methyl-1 2 3 4-tetrahydroisoquinoline-4 6-diol 2 2 4-trimethyl-1 2-dihydroquinoline 1-methyl-1 2 3 4-tetrahydroquinoline 1 2 3 4-tetrahydroisoquinoline