Isonicotinic acid[1]
Skeletal formula
Skeletal formula
Ball-and-stick model
Ball-and-stick model
Names
Preferred IUPAC name
Pyridine-4-carboxylic acid
Other names
Isonicotinic acid
4-Pyridinecarboxylic acid
p-Pyridinecarboxylic acid
4-Picolinic acid
Identifiers
3D model (JSmol)
ChEBI
ChEMBL
ChemSpider
ECHA InfoCard 100.000.208
KEGG
UNII
  • InChI=1S/C6H5NO2/c8-6(9)5-1-3-7-4-2-5/h1-4H,(H,8,9) checkY
    Key: TWBYWOBDOCUKOW-UHFFFAOYSA-N checkY
  • InChI=1/C6H5NO2/c8-6(9)5-1-3-7-4-2-5/h1-4H,(H,8,9)
    Key: TWBYWOBDOCUKOW-UHFFFAOYAV
  • c1cnccc1C(=O)O
Properties
C6H5NO2
Molar mass 123.111 g·mol−1
Appearance White to off-white crystalline solid
Density Solid
Melting point 310 °C (590 °F; 583 K) (sublimes)
Hazards
NFPA 704 (fire diamond)
NFPA 704 four-colored diamond
3
1
0
Safety data sheet (SDS) http://datasheets.scbt.com/sc-250188.pdf
Related compounds
Related compounds
 nicotinic acid, pyridine isoniazid
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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Infobox references

Isonicotinic acid or pyridine-4-carboxylic acid is an organic compound with the formula C5H4N(CO2H). It is a derivative of pyridine with a carboxylic acid substituent at the 4-position. It is an isomer of picolinic acid and nicotinic acid, which have the carboxyl group at the 2- and 3-position respectively compared to the 4-position for isonicotinic acid.

Derivatives

Isonicotinic acids is a term loosely used for derivatives of isonicotinic acid. Hydrazide derivatives include isoniazid, iproniazid, and nialamide. Amide and ester derivatives include ethionamide and dexamethasone isonicotinate.

See also

References

  1. ↑ Isonicotinic acid at chemicalland21.com
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