Description

Sulfapyridine-D4 is a deuterium-labeled analog of the sulfonamide antibiotic sulfapyridine, where four hydrogen atoms are replaced with deuterium. This stable isotope-labeled compound is essential for use as an internal standard in quantitative mass spectrometry, ensuring the highest accuracy and reliability in analytical measurements. It is a critical tool for researchers and quality control laboratories in the pharmaceutical, clinical research, and forensic toxicology sectors who require precise quantification of sulfapyridine and its metabolites.

Application

• Internal Standard for LC-MS/MS and GC-MS analysis of sulfapyridine.
• Pharmaceutical research and development for pharmacokinetic and metabolic studies.
• Clinical and forensic toxicology for accurate drug level monitoring.
• Quality control and method validation in analytical laboratories.
• Environmental analysis for tracing sulfonamide antibiotic residues.
• Biomedical research investigating drug metabolism and disposition.

Basic Information

Product Name	Sulfapyridine-D4
CAS No.	1189863-86-2
Molecular Formula	C11H7D4N3O2S
Molecular Weight	253.31 g/mol
Synonyms	2-Sulfanilamidopyridine-d4; 4-Amino-N-(2-pyridinyl-d4)benzenesulfonamide; N1-(Pyridin-2-yl-d4)sulfanilamide; Sulfapyridine (phenyl-d4); Deuterated Sulfapyridine; Sulfapyridine-d4 Internal Standard
EINECS	Contact for details

Quality Control

Our Sulfapyridine-D4 is manufactured under strict quality systems to ensure exceptional isotopic purity and chemical integrity. Each batch undergoes comprehensive analysis, including HPLC, NMR, and mass spectrometry, to confirm identity, chemical purity, and deuterium enrichment. A detailed Certificate of Analysis (COA) is provided with every shipment, documenting all critical specifications.

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.

Specification

Item	Specification
Appearance	White to off-white powder
Identification (IR)	Conforms to structure
Identification (MS)	Conforms to structure
Purity (HPLC)	≥ 98.0%
Isotopic Purity (D-enrichment)	≥ 98 atom % D
Chemical Purity	≥ 95%
Water Content (KF)	≤ 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.