خلین

Also known as 4,9-dimethoxy-7-methylfuro[3,2-g]chromen-5-one, 4,9-dimethoxy-7-methyl-furo[3,2-g]chromen-5-one, 4,9-dimethoxy-7-methyl-5-furo[3,2-g][1]benzopyranone

Khellin has been used as an herbal folk medicine, with use in the Mediterranean dating back to Ancient Egypt, to treat a variety of maladies including: renal colic, kidney stones, coronary disease, bronchial asthma, vitiligo, and psoriasis. It is a major constituent of the plant Visnaga daucoides, also known as Ammi visnaga and as bishop's weed. Once purified, khellin exists as colorless, odorless, bitter-tasting needle-shaped crystals and is classified as a gamma-pyrone, a furanochromone derivative. In the early 20th century, researchers searched for khellin analogs with lower toxicity and be