Nicotinic acid

CAS Registry Number®

59-67-6

CAS Name

Nicotinic acid

Molecular Formula

C6H5NO2

Molecular Mass

123.11

Cite this Page

Nicotinic acid.   CAS Common Chemistry.   CAS, a division of the American Chemical Society, n.d.   http://commonchemistry.cas.org/detail?ref=59-67-6 (retrieved 2025-07-13) (CAS RN: 59-67-6).  Licensed under the Attribution-Noncommercial 4.0 International License (CC BY-NC 4.0).

Compound Properties

  • Boiling Point (1)

    279-305 °C

  • Melting Point (2)

    236.6 °C

  • Density (2)

    1.473 g/cm³ @ Temp: 25 °C

Source(s)

Other Names and Identifiers

InChI

InChI=1S/C6H5NO2/c8-6(9)5-2-1-3-7-4-5/h1-4H,(H,8,9)

InChIKey

InChIKey=PVNIIMVLHYAWGP-UHFFFAOYSA-N

SMILES

C(O)(=O)C=1C=CC=NC1

Canonical SMILES

O=C(O)C=1C=NC=CC1

Other Names for this Substance

  • 3-Pyridinecarboxylic acid
  • Nicotinic acid
  • Akotin
  • Efacin
  • Niacin

View All

Deleted or Replaced CAS Registry Numbers

123574-58-3, 1580002-26-1

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