Isonicotinic acid

Isonicotinic acid^[1]

Names
IUPAC name Pyridine-4-carboxylic acid
Other names 4-Pyridinecarboxylic acid; p-Pyridinecarboxylic acid; 4-Picolinic acid
Identifiers
CAS Registry Number	55-22-1 Y
ChEBI	CHEBI:6032 Y
ChEMBL	ChEMBL1203 Y
ChemSpider	5709 Y
InChI InChI=1S/C6H5NO2/c8-6(9)5-1-3-7-4-2-5/h1-4H,(H,8,9) Y Key: TWBYWOBDOCUKOW-UHFFFAOYSA-N Y InChI=1/C6H5NO2/c8-6(9)5-1-3-7-4-2-5/h1-4H,(H,8,9) Key: TWBYWOBDOCUKOW-UHFFFAOYAV
Jmol-3D images	Image
KEGG	C07446 Y
PubChem	5922
SMILES c1cnccc1C(=O)O
UNII	Y8SYN761TQ Y
Properties
Chemical formula	C6H5NO2
Molar mass	123.11 g/mol
Appearance	White to off-white crystalline solid
Density	Solid
Melting point	310 °C (590 °F; 583 K) (sublimes)
Related compounds
Related compounds	nicotinic acid, pyridine
Except where noted otherwise, data is given for materials in their standard state (at 25 °C (77 °F), 100 kPa)
Y verify (what is: Y/N?)
Infobox references

Isonicotinic acid is an organic compound with a carboxyl group on a pyridine ring. It is an isomer of nicotinic acid — the carboxyl group for isonicotinic acid is on the 4-position instead of the 3-position for nicotinic acid.

Derivatives

Isonicotinic acids is a term loosely used for derivatives of isonicotinic acid. Examples include:

• Ethionamide
• Iproniazid
• Isoniazid
• Nialamide

• 

  Iproniazid

• 

  Nialamide

See also

• Nicotinic acids

References

External links

• Isonicotinic Acids at the US National Library of Medicine Medical Subject Headings (MeSH)