5-[(3-carboxy-4-hydroxy-5-methylphenyl)methyl]-2-hydroxy-3-methylbenzoic acid

(2-carbonochloridoyl-6-methylphenyl) acetate

2-羟基-3-甲基苯甲醛

2-羟基-3-甲基亚苯基肼

2-羟基-3-甲基苯甲酸甲酯