Radish thioside (4-methyl sulfonyl butenyl glucoside) is found in cruciferous plants, such as broccoli, kale, cabbage, etc. Among them, broccoli and broccoli have the most active ingredients, especially broccoli seeds. It is a kind of thioglucoside, which is hydrolyzed by thioglucoside hydrolytic enzyme (also known as black mustard enzyme) in the cell to produce radish thiothioside (1-isothiocyanate (4r) - (methyl sulfonyl) butane, sulforaphane). It will also be decomposed by the human intestinal flora to form radish thiocin and absorbed by the human body. 

 A large number of studies have shown that radish thiodin has a variety of physiological activities, which can inhibit the expression of i-phase enzymes and induce ii-phase enzymes, inhibit cancer cell proliferation, induce cell cycle block and apoptosis, and inhibit tumor metastasis. Radish thionin also has pharmacological effects such as skin protection, antibacterial, anti-inflammatory, improving the body's antioxidant ability and immunity, and has excellent anti-cancer effect. 

 However, radish thioside is very unstable, while radish thioside is relatively stable and can be hydrolyzed into radish thioside in organisms. Therefore, radish thioside with better stability is preferred for food and medicine.