Isonicotinic acid

Isonicotinic acid

Skeletal formula Ball-and-stick model
Names
IUPAC name Pyridine-4-carboxylic acid
Other names 4-Pyridinecarboxylic acid; p-Pyridinecarboxylic acid; 4-Picolinic acid
Identifiers
CAS Number	55-22-1 Y
3D model (JSmol)	Interactive image
ChEMBL	ChEMBL1203 Y
ChemSpider	5709 Y
ECHA InfoCard	100.000.208
KEGG	C07446 Y
PubChem CID	5922
UNII	Y8SYN761TQ Y
CompTox Dashboard (EPA)	DTXSID8020757
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
SMILES c1cnccc1C(=O)O
Properties
Chemical formula	C6H5NO2
Molar mass	123.11 g/mol
Appearance	White to off-white crystalline solid
Density	Solid
Melting point	310 °C (sublimes)
Related compounds
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). Y verify (what is YN ?) 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

External links

• Isonicotinic Acids at the U.S. National Library of Medicine Medical Subject Headings (MeSH)