英文别名potassium,3,4-dihydroxybenzoate; 3,4-dihydroxybenzoic Acid Potassium Salt; 3,4-Dihydroxybenzoic acid monopotassium salt; Benzoic acid, 3,4-dihydroxy-, potassium salt (1:1); 3,4-Dihydroxy Benzoic Acid Potassium Salt; Protocatechuic acid (potassium) 
