4-Aminobenzoic Acid

**Definition:** An aminobenzoic acid isomer that combines with pteridine and GLUTAMIC ACID to form FOLIC ACID. The fact that 4-aminobenzoic acid absorbs light throughout the UVB range has also resulted in its use as an ingredient in SUNSCREENS.

**Tree numbers:** - D02.241.223.100.050.500.640 - D02.455.426.559.389.127.020.937.640

**Synonyms:** - p-Aminobenzoic Acid - PABA - para-Aminobenzoic Acid - Aminobenzoic Acid (USP)