It has been documented which the furocoumarin angelicin (two) found in the fruit of Psoralea corylifolia L. is structurally linked to psoralen, a very well-known chemical photosensitizer, which is useful for therapy of various skin illnesses for instance psoriasis and vitiligo due to its anti-proliferative influence.(attained by HNTf2 and TMSOTf) t