Pyridinedicarboxylic acid is a group of organic compounds which are dicarboxylic derivatives of pyridine. Pyridinedicarboxylic acid comes in several isomers:
Quinolinic acid (2,3-pyridinedicarboxylic acid) Lutidinic acid (2,4-pyridinedicarboxylic acid) Isocinchomeronic acid (2,5-pyridinedicarboxylic acid) Dipicolinic acid (2,6-pyridinedicarboxylic acid) Cinchomeronic acid (3,4-pyridinedicarboxylic acid) Dinicotinic acid (3,5-pyridinedicarboxylic acid)
All isomers share the molecular weight 167.12 g/mol and the chemical formula C7H5NO4.