1,3-Cyclohexanedicarboxylic acid , its cas register number is 3971-31-1. It also can be called 1,3-Benzenedicarboxylicacid, hexahydro- ; 3-Carboxycyclohexanecarboxylic acid ; Hexahydroisophthalicacid ; Isophthalic acid, hexahydro- .