Description

3-Hydroxyestra-1,3,5(10),7-Tetraen-17-One 3-Acetate is a high-purity steroid derivative, also known as Equilin 3-Acetate, which serves as a critical pharmaceutical intermediate. Its value lies in providing a reliable and consistent building block for the synthesis of complex steroid-based active pharmaceutical ingredients (APIs). This compound is essential for manufacturers and research institutions in the pharmaceutical, biotechnology, and fine chemical sectors, particularly those focused on hormone-related therapies and advanced steroid research.

Application

• Pharmaceutical Intermediate: A key starting material or intermediate in the multi-step synthesis of steroidal drugs and hormone replacement therapies.
• Research & Development: Used in academic and industrial laboratories for studying steroid metabolism, receptor binding, and developing new therapeutic agents.
• Reference Standard: Serves as a certified reference material (CRM) or analytical standard for quality control and method validation in pharmaceutical analysis.
• Biochemical Studies: Employed in biochemical research to investigate enzymatic pathways and biological mechanisms involving estrogen-related compounds.
• Fine Chemical Synthesis: Utilized in custom synthesis and contract manufacturing for producing specialized steroid derivatives.

Basic Information

Product Name	3-Hydroxyestra-1,3,5(10),7-Tetraen-17-One 3-Acetate
CAS No.	43085-97-8
Molecular Formula	C20H24O3
Molecular Weight	312.41 g/mol
Synonyms	Equilin 3-Acetate; 3-Acetoxyestra-1,3,5(10),7-tetraen-17-one; 17-Oxoestra-1,3,5(10),7-tetraen-3-yl acetate; δ7,9-Estrone 3-acetate; 3-Hydroxyestra-1,3,5(10),7-tetraen-17-one acetate; NSC 105816; 3-Acetoxy-17-oxoestra-1,3,5(10),7-tetraene
EINECS	Contact for details

Quality Control

Our 3-Hydroxyestra-1,3,5(10),7-Tetraen-17-One 3-Acetate is manufactured under strict quality management systems. Each batch undergoes rigorous analytical testing, including HPLC for purity and identity confirmation via IR and NMR spectroscopy, to ensure it meets the high standards required for pharmaceutical intermediates and research chemicals. A comprehensive Certificate of Analysis (COA) detailing all specifications is provided with every shipment.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at controlled room temperature (typically 15-25°C). Keep away from incompatible materials. Due to its light-sensitive nature, handling and storage should minimize exposure to direct light.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Identification (HPLC)	Conforms to reference standard
Assay (HPLC)	≥ 98.0%
Related Substances (HPLC)	Total impurities ≤ 2.0%
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.