5 7 3 4 '- tetrahydroxyflavone July 8, 2019 16 32 64 128 Luteolin 3 4 5 7 tetrahydroxyflavone Kaempferol 3 4' 5 7-tetrahydroxyflavone 3 4 5 6-tetrahydro-2-pyrimidinethiol 4 5 6 7-tetrahydro-1h-indole 2 3 4 5-tetrahydro-1 1'-biphenyl 3 4 5 6-tetrahydrophthalic anhydride
