2 2 4 trimethyl 1 2 dihydroquinoline cas no July 8, 2019 16 32 64 128 2 2 4-trimethyl-1 2-dihydroquinoline 2 2 4-trimethyl-1 2-dihydroquinoline polymer 2 4-dimethylquinoline 1 2-dihydro-2 2 4-trimethyl-quinoline 2-methyl-1 2 3 4-tetrahydroisoquinoline-4 6-diol
