Description

Androsta-3,5,9(11)-Trien-17-One, 3-Methoxy CAS NO 28319-72-4 is a high-purity steroidal intermediate characterized by its specific tricyclic structure. This compound is of significant value in advanced pharmaceutical research and synthesis, serving as a critical building block for the development of novel therapeutic agents. It is primarily required by research institutions and pharmaceutical manufacturers engaged in steroid chemistry, hormone-related drug discovery, and the production of specialized fine chemicals.

Application

• Pharmaceutical Intermediate: A key precursor in the synthesis of novel steroid-based active pharmaceutical ingredients (APIs).
• Research & Development: Used in academic and industrial laboratories for studying steroid receptor activity and metabolic pathways.
• Hormone Analog Synthesis: Serves as a foundational structure for creating analogs with potential therapeutic applications.
• Fine Chemical Production: Employed in the multi-step synthesis of complex, high-value specialty chemicals.
• Reference Standard: Can be utilized as an analytical standard for quality control and method development in steroid analysis.

Basic Information

Product Name	Androsta-3,5,9(11)-Trien-17-One, 3-Methoxy
CAS No.	28319-72-4
Molecular Formula	C₂₀H₂₆O₂
Molecular Weight	298.42 g/mol
Synonyms	3-Methoxyestra-3,5,9(11)-trien-17-one; 3-Methoxy-19-norandrosta-3,5,9(11)-trien-17-one; 3-Methoxyestra-3,5,9(11),16-tetraen-17-one (related); 3-Methoxy-δ3,5,9(11)-androstatrien-17-one; 3-Methoxy-19-norpregna-3,5,9(11)-trien-20-one (related structure); 3-Methoxyestra-1,3,5(10),9(11)-tetraen-17-one (isomeric); 28319-72-4; 3-Methoxyestra-3,5,9(11)-trien-17-one
EINECS	Contact for details

Quality Control

Our Androsta-3,5,9(11)-Trien-17-One, 3-Methoxy is manufactured under strict quality management systems. Each batch undergoes comprehensive analytical testing, including HPLC for purity and identity confirmation by spectroscopic methods, to ensure it meets exacting research and pharmaceutical-grade standards. A detailed Certificate of Analysis (COA) specifying purity, related substances, and physical characteristics 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 a controlled room temperature (15-25°C). Due to its hygroscopic nature, the container must be kept tightly sealed in a low-humidity environment to prevent moisture absorption. For long-term storage, consider using desiccants.

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%
Related Substances (HPLC)	Total impurities ≤ 2.0% Any single unknown impurity ≤ 0.5%
Loss on Drying	≤ 0.5%
Residue on Ignition	≤ 0.1%

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