Description

Estra-5(10),9(11)-Diene-3,17-Dione is a high-purity steroid intermediate with the CAS number 2503-06-2. This compound serves as a critical building block in the synthesis of more complex steroid-based active pharmaceutical ingredients (APIs) and fine chemicals. It is essential for manufacturers in the pharmaceutical, research, and specialty chemical industries who require reliable, high-quality raw materials for advanced synthesis.

Application

• Pharmaceutical Intermediate: Key precursor in the synthesis of steroidal hormones and other therapeutic agents.
• Research & Development: Used in academic and industrial laboratories for studying steroid chemistry and developing new synthetic pathways.
• Fine Chemical Synthesis: Serves as a versatile starting material for creating complex, high-value specialty chemicals.
• Reference Standard: Utilized as an analytical standard in quality control laboratories for method development and validation.

Basic Information

Product Name	Estra-5(10),9(11)-Diene-3,17-Dione
CAS No.	2503-06-2
Molecular Formula	C18H22O2
Molecular Weight	270.37 g/mol
Synonyms	5(10),9(11)-Estratriene-3,17-dione; 5(10),9(11)-Estratrien-3,17-dione; 5(10),9(11)-Diene-3,17-dione; δ5(10),9(11)-Estratrien-3,17-dione; 3,17-Dioxo-δ5(10),9(11)-estratriene; 19-Norandrosta-5(10),9(11)-diene-3,17-dione
EINECS	Contact for details

Quality Control

Our Estra-5(10),9(11)-Diene-3,17-Dione is manufactured under strict quality management systems. Each batch undergoes rigorous analytical testing, including HPLC for purity and identity confirmation, to ensure it meets the high standards required for pharmaceutical and research applications. A comprehensive Certificate of Analysis (COA) is provided with every shipment.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at controlled room temperature (15-25°C). Keep away from heat and incompatible materials.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to reference spectrum
Assay (HPLC)	≥ 98.0%
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.