Return to Results

4-Fluorophthalic anhydride

CAS Registry Number®

319-03-9

CAS Name

4-Fluorophthalic anhydride

Molecular Formula

C8H3FO3

Molecular Mass

166.11

Cite this Page

4-Fluorophthalic anhydride.   CAS Common Chemistry.   CAS, a division of the American Chemical Society, n.d.   http://commonchemistry.cas.org/detail?cas_rn=319-03-9 (retrieved 2025-05-28) (CAS RN: 319-03-9).  Licensed under the Attribution-Noncommercial 4.0 International License (CC BY-NC 4.0).

Compound Properties

  • Boiling Point (1)

    260 °C @ Press: 746 Torr

  • Melting Point (2)

    74-75 °C

Source(s)

Other Names and Identifiers

InChI

InChI=1S/C8H3FO3/c9-4-1-2-5-6(3-4)8(11)12-7(5)10/h1-3H

InChIKey

InChIKey=XVMKZAAFVWXIII-UHFFFAOYSA-N

SMILES

O=C1C=2C(C(=O)O1)=CC=C(F)C2

Canonical SMILES

O=C1OC(=O)C2=CC(F)=CC=C12

Other Names for this Substance

  • 1,3-Isobenzofurandione, 5-fluoro-
  • Phthalic anhydride, 4-fluoro-
  • 5-Fluoro-1,3-isobenzofurandione
  • 4-Fluorophthalic anhydride
  • NSC 42091

View All

Deleted or Replaced CAS Registry Numbers

2858743-81-2

CAS INSIGHTSTM
A photo depiction of someone watching the webinar from their monitor