Heraclenol, also known as heraclenol, is a linear furanocoumarin derivative. It is a natural product primarily isolated from plants of the *Angelica* genus, such as *Angelica dahurica* (Bai Zhi), and other species like *Heracleum* and *Peucedanum*. Its chemical structure is characterized by a coumarin core fused with a furan ring. The compound exhibits significant biological activities, particularly in the field of photochemotherapy. Heraclenol is a known photosensitizer and has been investigated for its potential in treating skin conditions like psoriasis and vitiligo, often in combination with ultraviolet A (UVA) radiation, a therapy known as PUVA. Its mechanism involves intercalating into DNA and, upon UVA activation, forming covalent photoadducts with pyrimidine bases, which inhibits DNA replication and cell proliferation. Research also explores its anti-inflammatory, antimicrobial, and potential anticancer properties, linking it to various pharmacological applications. As a natural furanocoumarin, heracleanol is a subject of interest in phytochemistry and natural product drug discovery. Its isolation, structural modification, and activity studies contribute to the development of novel therapeutic agents derived from traditional medicinal plants.