Pyridinetricarboxylic acid
# Pyridinetricarboxylic acid

Pyridinetricarboxylic acid is a group of organic compounds which are tricarboxylic derivatives of pyridine. Pyridinetricarboxylic acid comes in several isomers:

* 2,3,4-Pyridinetricarboxylic acid
* 2,3,5-Pyridinetricarboxylic acid
* 2,3,6-Pyridinetricarboxylic acid
* Berberonic acid (2,4,5-Pyridinetricarboxylic acid)
* Collidinic acid (2,4,6-Pyridinetricarboxylic acid)
* 3,4,5-Pyridinetricarboxylic acid

| Common Name | | | | Berberonic acid | Collidinic acid | |
| - | - | - | - | - | - | - |
| Systematic Name | 2,3,4-Pyridinetricarboxylic acid | 2,3,5-Pyridinetricarboxylic acid | 2,3,6-Pyridinetricarboxylic acid | 2,4,5-Pyridinetricarboxylic acid | 2,4,6-Pyridinetricarboxylic acid | 3,4,5-Pyridinetricarboxylic acid |
| Structural Formula | | | | | | |
| CAS Registry Number | 632-95-1 | 116668-76-9 | | 490-28-8 | 536-20-9 | 632-94-0 |

All isomers share the molecular weight 211,13 g/mol and the chemical formula $C_8H_5NO_6.$

