Description

28-Norcastasterone is a potent, naturally occurring brassinosteroid plant growth regulator. This compound is valued for its ability to enhance plant stress tolerance, promote cell division and elongation, and significantly improve crop yield and quality. It is an essential research and formulation component for manufacturers in the agricultural chemical and plant biotechnology sectors seeking advanced, high-performance biostimulants.

Application

• As a key active ingredient in advanced plant growth regulator (PGR) and biostimulant formulations.
• For research and development of novel agrochemicals aimed at improving crop stress resistance to drought, salinity, and temperature extremes.
• Used in scientific studies to investigate brassinosteroid signaling pathways and their effects on plant physiology and development.
• Incorporation into foliar sprays and seed treatment solutions to enhance germination rates and early seedling vigor.
• Application in high-value horticulture and protected cropping to improve fruit set, size, and overall harvest quality.
• Potential use in tissue culture media to promote callus growth and organogenesis.

Basic Information

Product Name	28-Norcastasterone
CAS No.	83464-85-1
Molecular Formula	C₂₇H₄₆O₆
Molecular Weight	466.66 g/mol
Synonyms	28-Norcastasterone; (22R,23R,24S)-22,23-Dihydroxy-28-nor-5α-castasterone; 28-Nor-5α-castasterone; 28-Norbrassinolide analogue; 28-Nor-CS; 28-Nor-castasterone; 6-Deoxo-28-norcastasterone (related compound); 28-Nor-BR
EINECS	Contact for details

Quality Control

Our 28-Norcastasterone is produced under strict quality management protocols. Each batch undergoes comprehensive analytical testing, including HPLC for purity and identity confirmation via spectroscopic methods, to ensure it meets high-purity standards suitable for research and formulation. Certificates of Analysis (COA) detailing all specifications are available upon request to support your quality assurance and regulatory needs.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry place at controlled room temperature (15-25°C). This product is hygroscopic (moisture-sensitive) and must be kept in a dry environment to maintain stability and purity.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to reference spectrum
Identification (HPLC)	Retention time matches reference standard
Assay (HPLC)	≥ 98.0%
Loss on Drying	≤ 1.0%
Related Substances (HPLC)	Total impurities ≤ 2.0%
Single Unknown Impurity	≤ 0.5%

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