Description

Quinestrol CAS NO 152-43-2 is a synthetic, long-acting estrogen steroid compound. It is valued for its potent and prolonged hormonal activity, making it a critical intermediate in advanced pharmaceutical synthesis. This compound is primarily utilized by research institutions and manufacturers in the pharmaceutical and life sciences sectors for the development of hormonal therapies and related active pharmaceutical ingredients (APIs).

Application

• Pharmaceutical Intermediate: A key building block in the synthesis of steroidal drugs and long-acting estrogen formulations.
• Hormone Research: Used as a reference standard and active compound in endocrinology and reproductive biology studies.
• API Development: Serves as a precursor in the manufacturing process of specific estrogen-based active pharmaceutical ingredients.
• Biochemical Studies: Employed in laboratory settings to investigate estrogen receptor interactions and signaling pathways.
• Veterinary Medicine: Potential application in the development of hormonal treatments for animals.

Basic Information

Product Name	Quinestrol
CAS No.	152-43-2
Molecular Formula	C25H32O3
Molecular Weight	380.52 g/mol
Synonyms	Ethinylestradiol 3-Cyclopentyl Ether; 17α-Ethynylestradiol 3-cyclopentyl ether; Estrovis; 3-Cyclopentyloxy-19-nor-17α-pregna-1,3,5(10)-trien-20-yn-17-ol; W 3566; SH 567; NSC-92336
EINECS	205-803-7

Quality Control

Our Quinestrol is produced and tested under a strict quality management system. Each batch undergoes comprehensive analytical testing, including HPLC for purity and identity confirmation (IR), to ensure it meets high-grade standards suitable for research and pharmaceutical use. A 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 a controlled room temperature (typically 15-25°C). Keep away from incompatible materials.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to reference spectrum
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.