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p-aminobenzoic acid
(redirected from 4-Aminobenzoic acid)

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p- aminobenzoic acid /p- ami·no·ben·zo·ic ac·id/ (PABA) (-ben-zo´ik) a substance required for folic acid synthesis by many organisms; it also absorbs ultraviolet light (UVB rays) and is used (called also aminobenzoic acid ) as a topical sunscreen.
p-aminobenzoic acid (PAB) (PABA) [ah-me″no-ben-zo´ik]
a substance required for the synthesis of folic acid by many organisms; it is included in the B vitamin complex, although it is not an essential nutrient for humans. It is synthesized by many bacteria; sulfonamides act by blocking its synthesis; it also absorbs ultraviolet light, specifically UVB rays, and is used as aminobenzoic acid as a topical sunscreen.

p-aminobenzoic acid
see para-aminobenzoic acid. Called also PABA.


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The monosaccharides are pre-column derivatized with 4-aminobenzoic acid ethyl ester by reductive amination to a secondary amine which absorbs at 306 nm.
 
 
 
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