Ibuprofen

Ibuprofen is an organic compound with the molecular formula C13H18O2.

Formula
C13H18O2
Molar mass
206.28 g/mol
Also known as
2-[4-(2-methylpropyl)phenyl]propanoic acid, IBUPROFEN, (+-)-, RefChem:6648, 2-(4-Isobutylphenyl)propanoic acid, Brufen, Motrin

Overview

Ibuprofen is an organic compound with the molecular formula C13H18O2.

Identifiers

Formula
C13H18O2
Molar mass
206.28 g/mol
Also known as
2-[4-(2-methylpropyl)phenyl]propanoic acid, IBUPROFEN, (+-)-, RefChem:6648, 2-(4-Isobutylphenyl)propanoic acid, Brufen, Motrin
Chemical identifiers
SMILES
CC(C)CC1=CC=C(C=C1)C(C)C(=O)O
InChI
InChI=1S/C13H18O2/c1-9(2)8-11-4-6-12(7-5-11)10(3)13(14)15/h4-7,9-10H,8H2,1-3H3,(H,14,15)
PubChem CID
3672

Properties

Melting Point
75-77 °C
Water solubility
In water, 21 mg/l @ 25 °C
Data availability

Not published: Boiling Point, Density.

References

  1. PubChem Compound Summary: Ibuprofen (CID 3672)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): Ibuprofen — melting pointHazardous Substances Data Bank (HSDB)

    Retrieved through PubChem PUG View on 2026-09-08. https://pubchem.ncbi.nlm.nih.gov/compound/3672#section=Melting-Point. Source value, complete property clause or compact miscibility statement retained; absent pressure, temperature or phase conditions are not inferred. Original reference: O'Neil, M.J. (ed.). The Merck Index - An Encyclopedia of Chemicals, Drugs, and Biologicals. 13th Edition, Whitehouse Station, NJ: Merck and Co., Inc., 2001., p. 876

  3. Hazardous Substances Data Bank (HSDB): Ibuprofen — solubilityHazardous Substances Data Bank (HSDB)

    Retrieved through PubChem PUG View on 2026-09-08. https://pubchem.ncbi.nlm.nih.gov/compound/3672#section=Solubility. Source value, complete property clause or compact miscibility statement retained; absent pressure, temperature or phase conditions are not inferred. Original reference: Yalkowsky SH, Dannenfelser RM; The AQUASOL dATAbASE of Aqueous Solubility. Ver 5. Tucson, AZ: Univ AZ, College of Pharmacy (1992)