4-Hydroxybenzoic acid-13c from MedChemExpress

4-Hydroxybenzoic acid-13C is the 13C labeled 4-Hydroxybenzoic acid[1]. 4-Hydroxybenzoic acid, a phenolic derivative of benzoic acid, could inhibit most gram-positive and some gram-negative bacteria, with an IC50 of 160 µg/mL[2]