Caffeic acid

Caffeic acid (CAS 331-39-5), also known as 3,4-Dihydroxycinnamic Acid, is a hydroxycinnamic acid naturally occurring in many plants and widely sourced for use across pharmaceutical, nutraceutical, and cosmetic manufacturing.

It functions primarily as an antioxidant and UV-stabilizing agent in finished formulations. In pharmaceutical manufacturing, it serves as an intermediate in the synthesis of active compounds and is incorporated into antioxidant-focused dietary supplement formulations.

Food and beverage producers use it as a natural antioxidant to extend shelf life and protect against oxidative degradation in sensitive products. In personal care and cosmetic formulations, it is valued for its UV-stabilizing properties.

This makes it a candidate ingredient in sunscreen boosters and anti-aging topical products. Nutraceutical formulators also include it in standardized botanical extracts where polyphenol content is a defined quality parameter.

The product is supplied as a fine crystalline powder, typically off-white to light beige in color. It is available in technical and pharmaceutical-grade specifications to meet the requirements of different regulatory environments.

Purity levels of 98% and above are standard for pharmaceutical and nutraceutical applications. Documentation such as COA and HPLC testing is commonly provided to ensure compliance with global industry benchmarks.