Phthalic acid and derivatives

Compounds containing a phthalic acid moiety (or a derivative thereof), which is a benzene ring bearing a carboxylic acid group at two different ring positions. Isomers of phthalic acid include meta-phthalic acid (benzene-1,3-dioic acid), ortho-phthalic acid (benzene-1,2-dioic acid), and para-phthalic acid (benzene-1,4-dioic acid).

Organic compounds -> Benzenoids -> Benzene and substituted derivatives -> Benzoic acids and derivatives