SEARCH Articles Figures Tables 2-Hydroxybenzoic acid methyl ester 3-Hydroxybenzoate 4-Hydroxybenzoate esters 4-Hydroxybenzoic acid benzyl ester 4-Hydroxybenzoic acid butyl ester 4-Hydroxybenzoic acid esters preservatives 4-Hydroxybenzoic acid ethyl ester 4-Hydroxybenzoic acid propyl ester Esters of p-hydroxybenzoic acid Hydroxybenzoates Hydroxybenzoic acid phenyl ester O-Hydroxybenzoic acid, methyl ester P-Hydroxybenzoic acid ethyl ester P-Hydroxybenzoic acid methyl ester P-Hydroxybenzoic acid propyl ester P-hydroxybenzoic acid esters Propyl ester of 4-hydroxybenzoic acid