... . No toxicity, no residue 4. Professinal supplier natural brassinolide of plant growth ragulator Brassinolide overview Chemical name: (22R, 23R, 24S, )-2a, ... Nine Notable Functions of Natural BR as below: 1. Promoting growth, increasing yield, improving quality. 2. Increasing the percentage of ... packaging 1 G/Bag, 5 G/bottle, according to customer's requirement brassinolide for plant growth regulator