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4-Hydroxybenzoic acid, also known as p-hydroxybenzoic acid (PHBA), is a monohydroxybenzoic acid, a phenolic derivative of benzoic acid.It is a white crystalline solid that is slightly soluble in water and chloroform but more soluble in polar organic solvents such as alcohols and acetone. 4-Hydroxybenzoic acid is primarily known as the basis for the preparation of its esters, known as parabens ...
4-Hydroxybenzoic acid 4-O-glucoside is a glucoside of p-hydroxybenzoic acid. It can be found in mycorrhizal (Picea abies-Lactarius deterrimus and Picea abies-Laccaria amethystina) and non-mycorrhizal roots of Norway spruces (Picea abies). [1] The enzyme 4-hydroxybenzoate 4-O-beta-D-glucosyltransferase can be found in the pollen of Pinus ...
Hydroxybenzoic acid may refer to several related chemical compounds: 2-Hydroxybenzoic acid (salicylic acid, o-hydroxybenzoic acid) 3-Hydroxybenzoic acid (m ...
Monohydroxybenzoic acid may refer to any of three isomeric phenolic acids: Salicylic acid (2-hydroxybenzoic acid, o-hydroxybenzoic acid) 3-Hydroxybenzoic acid (m-hydroxybenzoic acid) 4-Hydroxybenzoic acid (p-hydroxybenzoic acid) Monohydroxybenzoic acids can be degraded by microbes. [1]
They are produced by the esterification of para-hydroxybenzoic acid with the appropriate alcohol, such as methanol, ethanol, or n-propanol. para-Hydroxybenzoic acid is in turn produced industrially from a modification of the Kolbe-Schmitt reaction, using potassium phenoxide and carbon dioxide. [citation needed]
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