Iodomethylmethylthiobutanine

Also known as vitamin U, vitamin U

Molecular formula C6H14NO2IS, molecular weight 291.2. Exist in cabbage, lettuce, alfalfa and other green leafy vegetables.

It has a special smell and tastes salty and bitter. It is unstable under light or long-term exposure in the air. Easily soluble in water, insoluble in ethanol and ether. The aqueous solution is acidic