Description

22(S),23(S)-Homobrassinolide is a highly active, naturally occurring plant growth regulator belonging to the brassinosteroid class of phytohormones. This specific stereoisomer is valued for its superior biological activity in promoting cell division, elongation, and stress tolerance in plants. It is essential for agricultural researchers, biostimulant formulators, and advanced crop production systems seeking to enhance yield, quality, and resilience. Our high-purity grade ensures reliable and consistent performance for critical applications.

Application

• Agricultural Biostimulants: A key active ingredient in foliar sprays and soil drenches to improve crop growth, fruit set, and overall yield.
• Plant Tissue Culture: Used in micronutrient media to promote callus growth, embryogenesis, and organ differentiation in vitro.
• Stress Mitigation: Application to crops under abiotic stress conditions (e.g., drought, salinity, temperature extremes) to enhance tolerance and recovery.
• Seed Treatment: Soaking or priming seeds to improve germination rates, vigor, and early seedling establishment.
• Horticulture and Floriculture: Enhances the quality, color, and shelf-life of flowers, ornamental plants, and vegetables.
• Research and Development: Serves as a critical reference standard and bioactive compound for studying brassinosteroid signaling pathways and plant physiology.

Basic Information

Product Name	22(S),23(S)-Homobrassinolide
CAS No.	110369-52-3
Molecular Formula	C₂₉H₅₀O₆
Molecular Weight	494.71 g/mol
Synonyms	(22S,23S)-Homobrassinolide; 22(S),23(S)-Homobrassinolide; 2α,3α,22S,23S-Tetrahydroxy-24S-ethyl-B-homo-7-oxa-5α-cholestan-6-one; Homobrassinolide; HBR; Brassinolide homologue; Plant growth regulator BR; EC 288-290-5
EINECS	Contact for details

Quality Control

Our 22(S),23(S)-Homobrassinolide is manufactured under strict quality management systems. Each batch is analyzed to ensure high chemical purity and stereochemical integrity, meeting the stringent requirements for research and formulation. A comprehensive Certificate of Analysis (COA) detailing identity, purity, and related substances is provided with every shipment to guarantee traceability and batch-to-batch consistency.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry place at 2-8°C. The product is hygroscopic (moisture-sensitive) and should be handled under anhydrous conditions to maintain stability.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (HPLC)	Conforms to reference standard
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Specific Rotation	Contact for details
Loss on Drying	≤ 1.0%
Residue on Ignition	≤ 0.1%
Related Substances (HPLC)	Individual impurity ≤ 0.5%; Total impurities ≤ 2.0%

Note: Specifications can be tailored. Please contact us for the detailed technical data sheet of a specific grade.