4-hydroxybenzaldehyde

4-Hydroxybenzaldehyde (CAS 123-08-0), also called 4-HBA or p-hydroxybenzaldehyde, is a phenolic aldehyde used as a synthetic intermediate and flavoring agent. FEMA 3984.

Where is 4-hydroxybenzaldehyde used?

• Pharmaceutical manufacturing: precursor in the synthesis of active ingredients
• Production of antiviral compounds and vanillin derivatives
• Food and beverage: flavoring component with vanilla-adjacent profiles
• Personal care: UV stabilizer and preservative booster in skin and hair formulations
• Polymer and resin producers use it as a building block for UV-stabilizing additives and specialty antioxidant systems.

Good to know: FEMA 3984 supports use in flavor applications where regulatory traceability is required. FCC-grade material is for flavor applications requiring documented food safety compliance.

Commercial specifications

• High-purity specifications for API intermediate requirements