I

Ibuprofen

IUPAC: 2-[4-(2-methylpropyl)phenyl]propanoic acid

C13H18O2 Organic Compounds CAS 58560-75-1
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Quick Reference
Formula / NotationC13H18O2
CAS Number58560-75-1
Molecular Weight206.28
Melting Point75-77.5 ºC
Boiling Point157 ºC
Solubility21 mg/L (at 25 °C)
AppearanceSolid
Also Known As2-[4-(2-methylpropyl)phenyl]propanoic acid; 58560-75-1; IBUPROFEN, (+-)-; RefChem:6648; 15687-27-1; 2-(4-Isobutylphenyl)propanoic acid; Motrin; Brufen; Advil; Nurofen
CategoryOrganic Compounds

What is Ibuprofen?

Ibuprofen is a monocarboxylic acid that is propionic acid in which one of the hydrogens at position 2 is substituted by a 4-(2-methylpropyl)phenyl group. It has a role as a geroprotector, a non-steroidal anti-inflammatory drug, a non-narcotic analgesic, an antipyretic, a xenobiotic, a radical scavenger, a cyclooxygenase 2 inhibitor, a cyclooxygenase 1 inhibitor, an environmental contaminant and a drug allergen. It is functionally related to a propionic acid. It is a conjugate acid of an ibuprofen(1-).

Formula & Notation

C13H18O2

IUPAC Name: 2-[4-(2-methylpropyl)phenyl]propanoic acid

Other Names / Synonyms: 2-[4-(2-methylpropyl)phenyl]propanoic acid; 58560-75-1; IBUPROFEN, (+-)-; RefChem:6648; 15687-27-1; 2-(4-Isobutylphenyl)propanoic acid; Motrin; Brufen; Advil; Nurofen

Properties & Characteristics

Appearance: Solid. Molecular formula: C13H18O2. Molecular weight: 206.28 g/mol. Boiling point: 157 ºC. Melting point: 75-77.5 ºC. Solubility: 21 mg/L (at 25 °C). Vapor pressure: 4.74X10-5 mm Hg @ 25 °C. LogP: 3.5.

Physical Data

PropertyValue
Melting Point75-77.5 ºC
Boiling Point157 ºC
Molecular Weight206.28
Solubility21 mg/L (at 25 °C)
AppearanceSolid

Uses & Applications

Used as an industrial feedstock, solvent, pharmaceutical intermediate, flavoring agent, or chemical building block.

Safety Information

Flammable or irritant. Many organic compounds are flammable liquids or vapours. Keep away from ignition sources. Consult SDS for specific hazard data.

Always consult the SDS/MSDS before handling any chemical. This information is for educational purposes only.

Key Facts

Term Ibuprofen
Formula C13H18O2
CAS Number 58560-75-1
Molecular Weight 206.28
Synonyms 2-[4-(2-methylpropyl)phenyl]propanoic acid; 58560-75-1; IBUPROFEN, (+-)-; RefChem:6648; 15687-27-1; 2-(4-Isobutylphenyl)propanoic acid; Motrin; Brufen; Advil; Nurofen

Frequently Asked Questions

Ibuprofen is a monocarboxylic acid that is propionic acid in which one of the hydrogens at position 2 is substituted by a 4-(2-methylpropyl)phenyl group. It has a role as a geroprotector, a non-steroidal anti-inflammatory drug, a non-narcotic analgesic, an antipyretic, a xenobiotic, a radical scavenger, a cyclooxygenase 2 inhibitor, a cyclooxygenase 1 inhibitor, an environmental contaminant and a drug allergen. It is functionally related to a propionic acid. It is a conjugate acid of an ibuprofen(1-).

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Editorial standards: Chemical data is sourced from peer-reviewed literature, CAS Registry, NIST WebBook, and PubChem. Safety information reflects guidance from OSHA, ECHA, and IAEA. For educational purposes only — always consult official SDS documentation and qualified professionals before handling chemicals.