Table 3.
Compound | R1 | R2 | R3 | R4 | R5 |
---|---|---|---|---|---|
benzoic acid | H | H | H | H | H |
salicylic acid | OH | H | H | H | H |
m-hydroxybenzoic acid | H | OH | H | H | H |
p-hydroxybenzoic acid | H | H | OH | H | H |
2,3-dihydroxybenzoic acid | OH | OH | H | H | H |
β-rezorcylic acid | OH | H | OH | H | H |
gentysinic acid | OH | H | H | OH | H |
γ-rezorcylic acid | OH | H | H | H | OH |
protocatechic acid | H | OH | OH | H | H |
α-rezorcylic acid | H | OH | H | OH | H |
gallic acid | H | OH | OH | OH | H |
2,4-dimetoxybenzoic acid | OCH3 | H | OCH3 | H | H |
veratric acid | H | OCH3 | OCH3 | H | H |
vanillic acid | H | OCH3 | OH | H | H |
syryngic acid | H | OCH3 | OH | OCH3 | H |