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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 ...
Included in that class are substances containing a phenolic ring and an organic carboxylic acid function (C6-C1 skeleton). Two important naturally occurring types of phenolic acids are hydroxybenzoic acids and hydroxycinnamic acids, which are derived from non-phenolic molecules of benzoic and cinnamic acid, respectively. [1]
By using potassium hydroxide, 4-hydroxybenzoic acid is accessible, an important precursor for the versatile paraben class of biocides used e.g. in personal care products. The methodology is also used in the industrial synthesis of 3-hydroxy-2-naphthoic acid; the regiochemistry of the carboxylation in this case is sensitive to temperature. [6]
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]
Hydroxybenzoic acid may refer to several related chemical compounds: 2-Hydroxybenzoic acid (salicylic acid, o-hydroxybenzoic acid) 3-Hydroxybenzoic acid (m ...
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2-Hydroxybenzoic acid, others 138.031694 C6H6O4: 1,2,3,5-Tetrahydroxybenzene 142.026608 C9H6O2: Coumarin 146.036779 C9H8O2: Cinnamic acid 148.05243 C9H10O2: 2-Methoxy-4-vinylphenol, others 150.06808 C10H14O: Carvacrol 150.104465 C8H8O3: 4-Hydroxyphenylacetic acid, others 152.047344 C9H12O2: 4-Ethylguaiacol 152.083729 C7H6O4: Protocatechuic acid ...
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