Description

Thiobutabarbital-D5 is a deuterated analog of the barbiturate derivative thiobutabarbital, specifically labeled with five deuterium atoms. This stable isotope-labeled compound is essential for ensuring accuracy and reliability in advanced analytical methodologies. It is primarily required by research, pharmaceutical development, and forensic laboratories for use as an internal standard in quantitative mass spectrometry. This application is critical for precise drug metabolism studies, pharmacokinetic research, and analytical method validation.

Application

• Internal Standard for LC-MS/MS: Serves as a critical reference compound in liquid chromatography-tandem mass spectrometry for the accurate quantification of thiobutabarbital and related substances in complex biological matrices.
• Drug Metabolism and Pharmacokinetics (DMPK): Used in tracer studies to investigate the absorption, distribution, metabolism, and excretion (ADME) profiles of barbiturate drugs.
• Forensic and Clinical Toxicology: Enables precise and legally defensible analysis of barbiturates in blood, urine, or tissue samples for diagnostic and forensic purposes.
• Pharmaceutical R&D: Supports method development and validation in the research of sedative-hypnotic agents and during the quality control of drug substances.
• Reference Material: Acts as a high-purity certified reference material (CRM) for calibrating analytical instruments and ensuring regulatory compliance in testing laboratories.

Basic Information

Product Name	Thiobutabarbital-D5
CAS No.	1189965-47-6
Molecular Formula	C10H12D5N2O2S
Molecular Weight	Approx. 239.33 g/mol
Synonyms	5-Ethyl-5-(1-methylpropyl)-2-thiobarbituric acid-d5; 5-Ethyl-5-sec-butyl-2-thiobarbituric acid-d5; Butalbital-D5 (thiobarbiturate); Secbutabarbital-D5 (thio analog); Thiopental analog-D5; Deuterated Thiobutabarbital; [2H5]-Thiobutabarbital
EINECS	Contact for details

Quality Control

Every batch of Thiobutabarbital-D5 is manufactured under controlled conditions and undergoes rigorous analytical testing to ensure exceptional isotopic purity and chemical identity. Our quality assurance protocol includes advanced techniques such as NMR (for deuterium incorporation), HPLC, and mass spectrometry. A comprehensive Certificate of Analysis (COA) detailing isotopic purity, chemical purity, and residual solvent content is provided with each shipment to support your compliance and research needs.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry place at a controlled room temperature (15-25°C). This product is hygroscopic (moisture-sensitive); ensure the container is sealed tightly after each use to prevent degradation from atmospheric moisture. For long-term storage, consider storing under an inert atmosphere.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Identification (MS)	Conforms to structure
Purity (HPLC)	≥ 98.0%
Isotopic Purity (NMR/MS)	≥ 98 atom % D
Chemical Purity	≥ 95.0%
Residual Solvents (GC)	Complies with 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.