Detailed Product Description Brassinolide 90% appearance: white crystals powdereffective composition: 90%min, Moisture:0.5%maxmain composition:(22S,23S,24R)-2α,3α,22,23-tetrahydroxy-24-methyl-B-homo -7-oxa-5-cholestan-6-one(22R,23R,24R)-2α,3α,22,23-tetrahydroxy-24-methyl-B-homo-7-oxa-5-α-cholestan-6-oneThe ratio of the above two composition is about 3:1.