Description

Estra-5,7,9-Triene-3β,17β-Diol CAS NO 517-07-7 is a high-purity steroid derivative, specifically a dihydroxylated derivative of estra-1,3,5(10)-triene. This compound serves as a critical intermediate in the synthesis of more complex steroidal pharmaceuticals and research compounds. It is primarily utilized by pharmaceutical R&D laboratories, fine chemical manufacturers, and academic research institutions engaged in steroid chemistry and hormone-related studies. Its defined structure makes it a valuable building block for developing novel therapeutic agents.

Application

• Pharmaceutical Intermediate: A key starting material or intermediate in the multi-step synthesis of steroidal drugs, including hormone therapies and anti-inflammatory agents.
• Research & Development: Used in academic and industrial R&D for studying steroid metabolism, receptor binding, and structure-activity relationships (SAR).
• Reference Standard: Serves as a high-purity analytical reference standard for quality control and method development in pharmaceutical analysis.
• Fine Chemical Synthesis: Employed in the production of specialized, high-value steroid derivatives for various experimental and diagnostic purposes.
• Biochemical Research: Utilized in biochemical assays to investigate enzymatic pathways involving steroid transformation.

Basic Information

Product Name	Estra-5,7,9-Triene-3β,17β-Diol
CAS No.	517-07-7
Molecular Formula	C₁₈H₂₄O₂
Molecular Weight	272.38 g/mol
Synonyms	3β,17β-Dihydroxyestra-5,7,9-triene; Estra-5,7,9-triene-3β,17β-diol; 5,7,9-Estratrien-3β,17β-diol; NSC 12169; 3β,17β-Dihydroxy-5,7,9-estratriene; 3β,17β-Estratrien-5,7,9-triol
EINECS	208-235-6

Quality Control

Our Estra-5,7,9-Triene-3β,17β-Diol is manufactured under strict quality management systems. Each batch is subjected to rigorous analytical testing, including HPLC for purity assessment and spectroscopic methods (IR, NMR) for structural confirmation, to ensure it meets the high standards required for pharmaceutical research and development. A comprehensive Certificate of Analysis (COA) detailing identity, purity, and impurity profiles is provided with every shipment.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated place at a controlled room temperature (15-25°C). Due to its hygroscopic (moisture-sensitive) nature, the container must be kept tightly sealed after each use to prevent degradation from atmospheric moisture.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Purity (HPLC)	≥ 98.0%
Loss on Drying	≤ 1.0%
Residue on Ignition	≤ 0.1%
Heavy Metals	≤ 20 ppm

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