An angular furocoumarin, may be used as a photoactivatable molecule that reacts with DNA and unsaturated fatty acids to form monoadducts. Angelicin may be studied as a potential phototherapeutic and to understand its mechanisms of action and effects on RNA and DNA synthesis.;An angular furocoumarin, may be used as a photoactivatable molecule that reacts with DNA and unsaturated fatty acids to form monoadducts. Angelicin may be studied as a potential phototherapeutic and to understand its mechanisms of action and effects on RNA and DNA synthesis.