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P-aminobenzoic acid

Definition

noun

(1) An organic compound with the molecular formula: C7H7NO2

(2) A white crystalline substance composed of a benzene ring substituted with an amino group and a carboxylic acid.

(3) A factor in the vitamin B complex; part of folic acid molecule.


Supplement

In p-aminobenzoic acid, the p stands for para- to describe the structure of the compound: a benzene ring with an amino group and carboxylic group attached to the carbon atoms 1 and 4, respectively. The compound is used as a UV filter in sunscreen formulations, as a drug against fibrotic skin disorders, in treating irritable bowel syndrome, and in the production of esters and folic acid.

The microorganisms in the intestines are capable of synthesizing folic acid from this compound, and humans lack this ability. Hence, the intestinal flora may be stimulated to produce folate with p-aminobenzoic acid.


Acronym: PABA.
Variant: para-aminobenzoic acid.
Other names: 4-Aminobenzoic acid (IUPAC), Vitamin Bx, bacterial Vitamin H1.
""See also: folic acid.


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