The molecule is a member of the class of glucoronic acids that is beta-D-glucuronic acid which has been dehydrogenated to introduce a double bond between positions 4 and 5. It is a member of glucuronic acids and an alpha,beta-unsaturated monocarboxylic acid.
(3R,4R)-2,3,4,5-tetrahydroxy-3,4-dihydro-2H-pyran-6-carboxylic acid