Niacin

Niacin is an organic compound with the molecular formula C6H5NO2.

Formula
C6H5NO2
Molar mass
123.11 g/mol
Also known as
pyridine-3-carboxylic acid, nicotinic acid, 3-pyridinecarboxylic acid, 3-Carboxypyridine, Akotin, wampocap

Overview

Niacin is an organic compound with the molecular formula C6H5NO2.

Identifiers

Formula
C6H5NO2
Molar mass
123.11 g/mol
Also known as
pyridine-3-carboxylic acid, nicotinic acid, 3-pyridinecarboxylic acid, 3-Carboxypyridine, Akotin, wampocap
Chemical identifiers
SMILES
C1=CC(=CN=C1)C(=O)O
InChI
InChI=1S/C6H5NO2/c8-6(9)5-2-1-3-7-4-5/h1-4H,(H,8,9)
PubChem CID
938

Properties

Melting Point
237 °C
Sublimation
Sublimes
Density
1.473 g/cu cm at 25 °C
Water solubility
In water, 1.8X10+4 mg/L at 20 °C

References

  1. PubChem Compound Summary: Niacin (CID 938)National Center for Biotechnology Information · PubChem

    Identity, molecular formula, molecular weight and aliases retrieved via PUG REST on 2026-09-08.

  2. Hazardous Substances Data Bank (HSDB): Niacin — melting pointHazardous Substances Data Bank (HSDB)

    Retrieved through PubChem PUG View on 2026-09-08. https://pubchem.ncbi.nlm.nih.gov/compound/938#section=Melting-Point. Source value, complete property clause or compact miscibility statement retained; absent pressure, temperature or phase conditions are not inferred. Original reference: Haynes, W.M. (ed.). CRC Handbook of Chemistry and Physics. 95th Edition. CRC Press LLC, Boca Raton: FL 2014-2015, p. 3-474

  3. Hazardous Substances Data Bank (HSDB): Niacin — boiling pointHazardous Substances Data Bank (HSDB)

    Retrieved through PubChem PUG View on 2026-09-08. https://pubchem.ncbi.nlm.nih.gov/compound/938#section=Boiling-Point. Source value, complete property clause or compact miscibility statement retained; absent pressure, temperature or phase conditions are not inferred. Original reference: Haynes, W.M. (ed.). CRC Handbook of Chemistry and Physics. 95th Edition. CRC Press LLC, Boca Raton: FL 2014-2015, p. 3-474

  4. Hazardous Substances Data Bank (HSDB): Niacin — densityHazardous Substances Data Bank (HSDB)

    Retrieved through PubChem PUG View on 2026-09-08. https://pubchem.ncbi.nlm.nih.gov/compound/938#section=Density. Source value, complete property clause or compact miscibility statement retained; absent pressure, temperature or phase conditions are not inferred. Original reference: Haynes, W.M. (ed.). CRC Handbook of Chemistry and Physics. 95th Edition. CRC Press LLC, Boca Raton: FL 2014-2015, p. 3-474

  5. Hazardous Substances Data Bank (HSDB): Niacin — solubilityHazardous Substances Data Bank (HSDB)

    Retrieved through PubChem PUG View on 2026-09-08. https://pubchem.ncbi.nlm.nih.gov/compound/938#section=Solubility. Source value, complete property clause or compact miscibility statement retained; absent pressure, temperature or phase conditions are not inferred. Original reference: Yalkowsky, S.H., He, Yan, Jain, P. Handbook of Aqueous Solubility Data Second Edition. CRC Press, Boca Raton, FL 2010, p. 227