Description

Epitestosterone-D3 Glucuronide is a high-purity, stable isotope-labeled internal standard critical for advanced analytical chemistry. This compound is essential for ensuring the accuracy and reliability of quantitative mass spectrometry analyses, particularly in complex biological matrices. It is primarily utilized by research laboratories, forensic toxicology facilities, and pharmaceutical development teams engaged in steroid metabolism studies, anti-doping control, and clinical diagnostics.

Application

• Internal Standard for LC-MS/MS: Used as a deuterated internal standard for the precise quantification of epitestosterone glucuronide in urine and serum samples, correcting for matrix effects and instrument variability.
• Anti-Doping Analysis: Critical in World Anti-Doping Agency (WADA)-accredited laboratories for the accurate measurement of the Testosterone/Epitestosterone (T/E) ratio, a key marker for detecting exogenous testosterone abuse.
• Clinical Research & Diagnostics: Supports studies on androgen metabolism, endocrine disorders, and the development of diagnostic assays for hormonal imbalances.
• Forensic Toxicology: Employed in confirmatory testing protocols to ensure legally defensible results in cases involving anabolic steroid use.
• Pharmaceutical R&D: Used in pharmacokinetic and metabolic stability studies of new drug candidates that affect or are metabolized by steroid pathways.
• Method Development & Validation: Serves as a key reagent for developing, optimizing, and validating robust bioanalytical methods in compliance with FDA and EMA guidelines.

Basic Information

Product Name	Epitestosterone-D3 Glucuronide
CAS No.	1101127-63-2
Molecular Formula	C25H35D3O8
Molecular Weight	469.56 g/mol
Synonyms	17α-Hydroxyandrost-4-en-3-one-16,16,17-d3 Glucuronide; Epitestosterone-d3 Glucuronide; 17α-Testosterone-d3 Glucuronide; ETG-d3; Epitestosterone Glucuronide (16,16,17-d3); Androst-4-en-17α-ol-3-one-16,16,17-d3 17β-D-Glucopyranosiduronic Acid
EINECS	Contact for details

Quality Control

Every batch of Epitestosterone-D3 Glucuronide is manufactured and tested under strict quality management systems. We provide comprehensive Certificates of Analysis (COA) detailing purity (by HPLC), isotopic enrichment, and identity confirmation to ensure it meets the exacting standards required for regulatory-compliant analytical work. Our quality commitment supports applications in GLP and ISO 17025 accredited environments.

Storage

Preserve in a tightly closed container, protected from light. Store at -20°C or below. This product is hygroscopic (moisture-sensitive). Allow the vial to equilibrate to room temperature in a dry environment before opening to minimize moisture uptake.

Specification

Item	Specification
Appearance	White to off-white solid
Identification (HPLC/MS)	Conforms
Purity (HPLC)	≥ 98.0%
Isotopic Enrichment	≥ 98 atom % D
Chemical Purity (by NMR)	Conforms
Water Content (KF)	≤ 1.0%
Solubility	Soluble in methanol, DMSO

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