Description

(9β,10α)-17β-Hydroxyandrost-4-En-3-One CAS NO 571-41-5 is a high-purity steroid compound, specifically a positional isomer of testosterone. This product is valued for its precise chemical structure, making it a critical reference standard and a key pharmaceutical intermediate in research and development. It is primarily utilized by the pharmaceutical, biotechnology, and academic research sectors for analytical and synthetic applications.

Application

• Pharmaceutical Reference Standard: Used for the calibration of analytical instruments (HPLC, GC-MS) and method validation in quality control laboratories.
• Active Pharmaceutical Ingredient (API) Intermediate: Serves as a key building block in the multi-step synthesis of more complex steroid-based therapeutics.
• Biochemical Research: Employed in studies investigating androgen receptor binding, steroid metabolism, and endocrine system pathways.
• Analytical Chemistry: Acts as a critical standard for the identification and quantification of steroid impurities or related substances in finished drug products.
• Academic & Contract Research: Utilized in universities and CROs for fundamental research in medicinal chemistry and pharmacology.

Basic Information

Product Name	(9β,10α)-17β-Hydroxyandrost-4-En-3-One
CAS No.	571-41-5
Molecular Formula	C19H28O2
Molecular Weight	288.42 g/mol
Synonyms	9β,10α-Testosterone; 9β,10α-Androst-4-en-17β-ol-3-one; 17β-Hydroxy-9β,10α-androst-4-en-3-one; 9β,10α-Dihydrotestosterone (isomer); 9β-Testosterone; 9β,10α-Androst-4-ene-3,17-dione (reduced form); 9β-Hydroxyandrost-4-ene-3,17-dione (tautomer)
EINECS	Contact for details

Quality Control

Our (9β,10α)-17β-Hydroxyandrost-4-En-3-One is manufactured under a strict quality management system. Every batch undergoes comprehensive analytical testing, including HPLC for purity and identity confirmation (IR, NMR), to ensure it meets the high standards required for research and pharmaceutical use. A detailed Certificate of Analysis (COA) is provided with each shipment, and custom synthesis to meet specific pharmaceutical grade or USP/EP reference standard specifications is available.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry place at a controlled room temperature (15-25°C). The product is light-sensitive and should be handled under appropriate conditions to maintain stability.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Identification (HPLC)	Retention time matches reference standard
Purity (HPLC)	≥ 98.0%
Loss on Drying	≤ 0.5%
Residue on Ignition	≤ 0.1%
Specific Rotation	Contact for details
Heavy Metals	< 20 ppm

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