Nicotinic acid N-oxide is an organic compound with the formula (HO₂C)C₅H₄NO. It is the N-oxide of nicotinic acid ((HO₂C)C₅H₄N). It is prepared by oxidation of nicotinic acid or the hydrolysis of 3-cyanopyridine N-oxide. The compound is a precursor to the popular drugs niflumic acid and pranoprofen.^[1]

Quick Facts Names, Identifiers ...

Nicotinic acid N-oxide

Names
IUPAC name 1-oxidopyridin-1-ium-3-carboxylic acid
Other names Oxiniacic acid
Identifiers
CAS Number	2398-81-4 Y
3D model (JSmol)	Interactive image
ChEBI	CHEBI:134763
ChEMBL	ChEMBL1591725
ChemSpider	16082
ECHA InfoCard	100.017.515
EC Number	219-265-0
PubChem CID	16976
UNII	YY03Q39E6L
CompTox Dashboard (EPA)	DTXSID2046543
InChI InChI=1S/C6H5NO3/c8-6(9)5-2-1-3-7(10)4-5/h1-4H,(H,8,9) Key: FJCFFCXMEXZEIM-UHFFFAOYSA-N
SMILES C1=CC(=C[N+](=C1)[O-])C(=O)O
Properties
Chemical formula	C6H5NO3
Molar mass	139.110 g·mol−1
Appearance	colorless or white solid
Melting point	254.5 °C (490.1 °F; 527.6 K)
Hazards
GHS labelling:
Pictograms
Signal word	Warning
Hazard statements	H312, H315, H319, H332
Precautionary statements	P261, P264, P271, P280, P302+P352, P304+P312, P304+P340, P305+P351+P338, P312, P321, P322, P332+P313, P337+P313, P362, P363, P501
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). Infobox references

Close