Description

17-Epi-Testosterone-D3 is a deuterium-labeled analog of the endogenous steroid hormone testosterone, specifically designed for use as an internal standard in analytical chemistry. This high-purity reference material is critical for ensuring the accuracy and reliability of mass spectrometry-based quantification methods. It is primarily utilized by research institutions, pharmaceutical companies, and contract testing laboratories engaged in steroid analysis, drug metabolism studies, and anti-doping control.

Application

• Internal Standard for LC-MS/MS: Essential for the precise quantification of testosterone and its metabolites in biological matrices (e.g., serum, urine, plasma) using isotope dilution mass spectrometry.
• Doping Control Analysis: Used by anti-doping laboratories to accurately measure testosterone and its epimers, aiding in the detection of exogenous steroid administration in athletes.
• Endocrine Research: Serves as a stable isotope-labeled tracer in studies investigating androgen biosynthesis, metabolism, and regulation in physiological and pathological states.
• Pharmaceutical R&D: Employed in pharmacokinetic and bioequivalence studies for testosterone-based therapies, ensuring reliable measurement of drug concentrations.
• Clinical Diagnostics: Supports the development and validation of high-sensitivity assays for hormonal disorders related to androgen levels.
• Forensic Toxicology: Applied in forensic analyses to confirm the presence of anabolic steroids with a high degree of certainty.

Basic Information

Product Name	17-Epi-Testosterone-D3
CAS No.	171199-96-5
Molecular Formula	C19H27D3O2
Molecular Weight	291.46 g/mol
Synonyms	17α-Testosterone-d3; (17α)-17-Hydroxyandrost-4-en-3-one-d3; 17-epi-Testosterone-d3; 17α-Hydroxy-4-androsten-3-one-d3; Deuterated 17-Epi-Testosterone; Androst-4-en-17α-ol-3-one-d3; Testosterone-17α-d3
EINECS	Contact for details

Quality Control

Every batch of 17-Epi-Testosterone-D3 is manufactured and analyzed under strict quality management systems. We guarantee high chemical purity and isotopic enrichment, supported by comprehensive analytical data including NMR, HPLC, and mass spectrometry. A detailed Certificate of Analysis (COA) is provided with each shipment, confirming identity, purity, and deuterium content. Our quality commitment ensures the material meets the stringent requirements for use as a certified reference standard in regulated environments.

Storage

Preserve in a tightly closed container, protected from light. Store at controlled room temperature (15-25°C) or as indicated on the label or COA. Keep the container in a dry, well-ventilated place. For long-term storage, consider storing at -20°C under an inert atmosphere.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (HPLC-MS)	Conforms
Identification (NMR)	Conforms
Purity (HPLC)	≥ 98.0%
Isotopic Purity (Deuterium Content)	≥ 98 atom % D
Chemical Purity	≥ 95%
Residual Solvents (GC)	Meets ICH guidelines
Water Content (KF)	≤ 0.5%

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