... . super quality and competitive price 3. hot sales plant growth regulator Product Name:Natural Brassinolide 90%TCCAS NO72962-43-7Specs90% TC, ... 0.1%SP, 0.2%SPChemical Name(22R, 23R, 24S)-2a, 3a, 22, 23-tetrahydroxy-24- ... 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 ...