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-).
IUPAC: 2-[4-(2-methylpropyl)phenyl]propanoic acid
PubChem
Physical & Chemical Properties
| Melting Point | 75-77.5 ºC |
| Boiling Point | 157 ºC |
| Solubility | 21 mg/L (at 25 °C) |
| Vapor Pressure | 4.74X10-5 mm Hg @ 25 °C |
| Appearance | Solid |
Data: PubChem · Last updated: 4/20/2026
GHS Classification
No GHS classification data available.
Classification data is sourced from ECHA.
Regulatory Compliance
Listed
note: Status based on EPA TSCA Active Inventory · inventory name: TSCA Chemical Substance Inventory
View sourceGlobal Trade Intelligence
No trade flow data available for this chemical.
HS Code(s): 2916
Data: UN Comtrade
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