Description

Equilenin is a naturally occurring steroid derivative with a unique phenolic structure. This compound serves as a critical intermediate and reference standard in the research and development of steroidal pharmaceuticals and biochemical studies. It is primarily utilized by pharmaceutical R&D laboratories, academic research institutions, and manufacturers of high-purity fine chemicals. Its well-defined structure makes it valuable for analytical and synthetic applications.

Application

• Pharmaceutical Intermediate: A key building block in the synthesis of complex steroidal drugs and hormone analogs.
• Biochemical Research: Used as a reference standard and probe in studies of steroid metabolism, receptor binding, and enzymatic pathways.
• Analytical Standard: Serves as a high-purity certified reference material (CRM) for quality control and method validation in analytical laboratories (HPLC, GC-MS).
• Academic & Institutional Research: Employed in universities and research institutes for investigating the chemistry and biological activity of equine estrogens.
• Fine Chemical Synthesis: A starting material for the custom synthesis of specialized steroid derivatives for various experimental purposes.

Basic Information

Product Name	Equilenin
CAS No.	517-09-9
Molecular Formula	C18H18O2
Molecular Weight	266.33 g/mol
Synonyms	3-Hydroxyestra-1,3,5(10),6,8-pentaen-17-one; 1,3,5(10),6,8-Estratetraene-3-ol-17-one; Equilenine; NSC 9894; delta 6,8-Estratrien-3-ol-17-one; 6,8-Didehydroestrone; 3-Hydroxy-17-oxo-1,3,5(10),6,8-estrapentaene
EINECS	208-237-5

Quality Control

Our Equilenin is produced under strict quality management protocols. Each batch undergoes comprehensive analytical testing, including HPLC for purity and identity confirmation via IR and NMR spectroscopy, to ensure it meets the stringent requirements for research and pharmaceutical intermediate use. A detailed Certificate of Analysis (COA) is provided with every shipment, documenting all critical quality attributes.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry place at controlled room temperature (15-25°C). This product is hygroscopic (moisture-sensitive) and should be handled in a low-humidity environment to maintain stability and purity.

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%
Loss on Drying	≤ 0.5%
Residue on Ignition	≤ 0.1%
Related Substances (HPLC)	Individual impurity ≤ 0.5%; Total impurities ≤ 1.0%

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