Chemical Name: (22R,23R,24S)-2a,3a,22,23-tetrahydroxy-24-methyl-B-homo-7-oxa-5a-cholestan-6-one. Other Name: brassinolide. Molec. Formula: C28H46O6. Molec. Weight: 494. Solubility: readily soluble in methanol, ethanol, chloroform and acetone. pH: 5.5-6.5. a steroidal plant growth regulator first extracted from rape pollen in 1970 by Mitchell of USA. In 1980, brassinolide was successfully synthesized by Japanese scholar. However the two methods are difficult to apply for production use because of the complex process and high cost. In 1988, ChengDu NewSun Biochemistry Company was the first to apply a unique process to extract brassinolide from nature sources, which was put into industrialized production later. This is the first production of the compound through extraction method in the world. The cost of production and the price of the product are greatly reduced, opening up bright future for agricultural use. Main Properties of -481: enhance the activity of SOD in plant leaves; promote excretion of H+ in plant; reduce permeability of cell membrane to keep the membrane intact; raise the efficiency of photosynthesis and the amount of chlorophyll to raise net rate of photosynthesis; adjust the distribution of the products of photosynthesis; protect flower and fruit; increase the rate of fruit bearing; increase the size of each fruit; improve product quality; increase yield. Through experiments on several dozen sorts of plants in over 20 countries, it has been shown that brassinolide can increase the yield of wheat, rice and cord by 15-20%; fruits by 15-35%; vegetables by 20-45%; and cotton and plants for oil by 10-20%. It's the most potent agent to increase yield. Application Result of Brassinolide-481: Promote the growth of plant to increase yield. Raise the ratio of fruit bearing and increase the unit weight. Enhance the resistance of the plant to drought and cold weather. Enhance the immunity of the plant. Used in tissue culture, regulate the differentiation of the tissue Reduce the harmful effect of pesticides. Enhance the activity of the seeds and the rate of burgeon, promote early mature by 7-14days Spraying the Brassinolide-481 before 5-10days before harvest can prolong the time of keeping fresh and bearing the transportation of fruits, vegetables and flowers.