Factory direct （+）-cis，trans-Abscisic Acid CAS：21293-29-8 CAS NO.21293-29-8

Zhengzhou Yuanli Biological Technology Co., Ltd. (Primary Zhengzhou Sigma Chemical Co., LTD.) founded in 2009, is an intergrated enterprise which integrates R&D, achievement transformation, production, sales and import-export trade. It subordinates a subsidiarycompany: Zhengzhou Chemical Chem Co., Ltd，a production base: Suicheng Pharmaceutical Co., Ltd., and an European Sales Company (Covering European and Russian Markets): GloBS Chemical Ltd.. There are more than 100 employees and more than 85% are professionals.

The company is a scientific and technological enterprise. The core is R&D and the lifelong mission is development, transformation and application of new technologies.

So far, more than 20 pieces of products has been researched and developed and transformed to production successfully. All of them are exclusive worldwide. Such as acridine series and borane series, Zhengzhou Sigma is the company with the most advanced technology and ability of batch production and supply with largest quantity all over the world. We offer products and technical services to 36 countries.

"Professional, dedicated, making every effort" is the type of Sigma people. We are willing to provide you with the most professional consulting, design the products of your most need, control products to meet the best quality. Looking forward to cooperation and creating the brilliancy together.

Abscisic acid stimulates ethylene production and promotes fruit ripening. It inhibits the synthesis of deoxyribonucleic acids and proteins. The physiological functions of abscisic acid are the following: 1. Inhibit and promote growth. When the concentration of abscisic acid applied is large, growth of stems, hypocotyls, roots, coleoptiles, or leaves is inhibited. When the concentration is low, it promotes the growth of roots and hypocotyls of the isolated cucumber cotyledon, accelerates the breeding of duckweed, and stimulates the development of parthenocarpic seed. 2. Maintain bud and seed dormancy. Dormancy is related to the balance between gibberellin and abscisic acid in the body. 3. Promote the shedding of fruits and leaves. 4. Promote stomatal closure. Abscisic acid can quickly close the stomata, and it is not poisonous to plants. It is a good anti-transpiration agent. A biological test to test the concentration of abscisic acid is to float the epidermis of isolated leaves on the surface of various concentrations of abscisic acid solution. In a certain range, the degree of opening and closing of the stomata is inversely proportional to the concentration of abscisic acid. 5. Affect the flowering. Under long-day conditions, abscisic acid can make strawberry and blackberry apical buds dormant and promote flowering. 6. Affect sexual differentiation. Gibberellin can cause male plants of cannabis to form male flowers. This effect can be reversed by abscisic acid, but abscisic acid cannot make female plants form female flowers.