Pyridinedicarboxylic acid
# Pyridinedicarboxylic acid

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)

| Common Name | Quinolinic acid | Lutidinic acid | Isocinchomeronic acid | Dipicolinic acid | Cinchomeronic acid | Dinicotinic acid |
| - | - | - | - | - | - | - |
| Systematic Name | 2,3-pyridinedicarboxylic acid | 2,4-pyridinedicarboxylic acid | 2,5-pyridinedicarboxylic acid | 2,6-pyridinedicarboxylic acid | 3,4-pyridinedicarboxylic acid | 3,5-pyridinedicarboxylic acid |
| Structural Formula | | | | | | |
| CAS Registry Number | 89-00-9 | 499-80-9 | 100-26-5 | 499-83-2 | 490-11-9 | 499-81-0 |

All isomers share the molecular weight 167.12 g/mol and the chemical formula $C_7H_5NO_4.$

