Description

4,5α-Dihydro Norethandrolone is a synthetic anabolic-androgenic steroid (AAS) derivative. This compound is of significant interest in pharmaceutical research and development, particularly for its structural relationship to established hormonal agents. It serves as a key intermediate or reference standard for researchers and manufacturers in the pharmaceutical and fine chemical sectors, where precise chemical identity and purity are paramount for developing therapeutic applications and conducting analytical studies.

Application

• Pharmaceutical Intermediate: Serves as a critical building block in the synthesis of more complex steroid-based active pharmaceutical ingredients (APIs).
• Reference Standard: Used in analytical laboratories for method development, validation, and quality control testing via techniques like HPLC and GC-MS.
• Biochemical Research: Employed in preclinical studies to investigate structure-activity relationships (SAR) of anabolic steroids and their metabolic pathways.
• Metabolite Studies: Utilized as a standard for the identification and quantification of metabolites in doping control or pharmacokinetic research.
• Fine Chemical Synthesis: Acts as a specialized starting material for custom synthesis and the production of novel steroid analogs.

Basic Information

Product Name	4,5α-Dihydro Norethandrolone
CAS No.	2099-68-5
Molecular Formula	C₂₀H₃₀O₃
Molecular Weight	318.45 g/mol
Synonyms	17α-Ethyl-17β-hydroxy-19-nor-4-androsten-3-one; 17α-Ethyl-19-nortestosterone; 4,5α-Dihydro-17α-ethyl-19-nortestosterone; Nilevar Impurity; 19-Nor-17α-ethyltestosterone; 17α-Ethylestr-4-en-17β-ol-3-one; Ethylestrenol related compound A
EINECS	Contact for details

Quality Control

Our 4,5α-Dihydro Norethandrolone is manufactured under strict quality management systems. Each batch undergoes comprehensive analytical testing to ensure identity, purity, and consistency. We provide full traceability and a detailed Certificate of Analysis (COA) with every shipment, which includes results from HPLC, IR, and other relevant pharmacopeial tests. Our quality commitment aligns with cGMP standards for pharmaceutical intermediates.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated place at a controlled room temperature (15-25°C). This product is hygroscopic (moisture-sensitive); therefore, the container must be kept tightly sealed in a dry environment to prevent degradation.

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.