Cinchomeronic acid

Cinchomeronic acid
Names
	Preferred IUPAC name pyridine-3,4-dicarboxylic acid
	Other names 3,4-Pyridinedicarboxylic acid; Chinchomeronic acid; NSC 178;
Identifiers
CAS Number	490-11-9 ;
3D model (JSmol)	Interactive image;
Beilstein Reference	137242
ChEBI	CHEBI:46860;
ChEMBL	ChEMBL261326;
ChemSpider	9854;
ECHA InfoCard	100.007.006
EC Number	207-705-4;
Gmelin Reference	487254
PubChem CID	10273;
UNII	7389UZW5DY;
CompTox Dashboard (EPA)	DTXSID70197653;
	InChI InChI=1S/C7H5NO4/c9-6(10)4-1-2-8-3-5(4)7(11)12/h1-3H,(H,9,10)(H,11,12) Key: MUYSADWCWFFZKR-UHFFFAOYSA-N;
	SMILES O=C(O)C=1C=NC=CC1C(=O)O;
Properties
Chemical formula	C7H5NO4
Molar mass	167.120 g·mol−1
Appearance	pale yellow crystalline
Melting point	256 °C (493 °F; 529 K)
Solubility in water	sparingly soluble
Hazards
	GHS labelling:
Pictograms
Signal word	Warning
Hazard statements	H315, H319, H335
Precautionary statements	P261, P264, P264+P265, P271, P280, P302+P352, P304+P340, P305+P351+P338, P319, P321, P332+P317, P337+P317, P362+P364, P403+P233, P405, P501
Related compounds
Related compounds	Quinolinic acid; Lutidinic acid; Isocinchomeronic acid; Dipicolinic acid; Dinicotinic acid;
	Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). Infobox references

Cinchomeronic acid is an organic compound with the molecular formula C₇H₅NO₄. The acid was initially isolated by Hugo Weidel in 1868. The compound is one of six isomers of pyridinedicarboxylic acid that are dicarboxylic derivatives of pyridine.