Description

Sulfaquinoxaline-13C6 is a stable isotope-labeled analog of the veterinary antibacterial agent sulfaquinoxaline, where six carbon atoms are replaced with the carbon-13 isotope. This compound is essential as an internal standard for the precise and accurate quantification of sulfaquinoxaline in complex matrices using advanced analytical techniques like LC-MS/MS. It is critically needed by analytical laboratories, contract research organizations (CROs), and pharmaceutical companies engaged in veterinary drug residue analysis, food safety testing, and pharmacokinetic studies to ensure regulatory compliance and data integrity.

Application

• Internal Standard for Mass Spectrometry: Primary use as a quantitative internal standard in Liquid Chromatography-Tandem Mass Spectrometry (LC-MS/MS) methods for sulfaquinoxaline analysis.
• Veterinary Drug Residue Testing: Enables accurate monitoring of sulfaquinoxaline residues in meat, milk, eggs, and other animal-derived food products to ensure compliance with maximum residue limits (MRLs).
• Metabolite Studies & Pharmacokinetics: Used in research to study the metabolism, distribution, and excretion of sulfaquinoxaline in animals.
• Method Development & Validation: Critical for developing, validating, and accrediting robust analytical methods in quality control and regulatory laboratories.
• Reference Material: Serves as a high-purity certified reference material (CRM) for calibrating instruments and verifying method accuracy.
• Environmental Analysis: Potential application in tracking the environmental fate and transport of sulfonamide antibiotics.

Basic Information

Product Name	Sulfaquinoxaline-13C6
CAS No.	1202864-52-5
Molecular Formula	C1413C6H12N4O2S
Molecular Weight	314.33 g/mol (for 13C6 labeled form)
Synonyms	4-Amino-N-2-quinoxalinylbenzenesulfonamide-13C6; N1-(2-Quinoxalinyl)sulfanilamide-13C6; Sulfaquinoxaline-13C6; 13C6-Sulfaquinoxaline; [13C6]-Sulfaquinoxaline; SQX-13C6; Isotopically Labeled Sulfaquinoxaline; Stable Isotope-Labeled Sulfaquinoxaline Internal Standard
EINECS	Contact for details

Quality Control

Every batch of Sulfaquinoxaline-13C6 is manufactured and analyzed under strict quality management systems. We guarantee high chemical and isotopic purity, with comprehensive testing including HPLC for chemical purity, NMR and MS for structural and isotopic confirmation, and residual solvent analysis. A detailed Certificate of Analysis (COA) is provided with each shipment, documenting the exact purity, isotopic enrichment, and batch-specific data to support your regulatory submissions and quality protocols.

Storage

Preserve in a tightly closed container, protected from light. Store at controlled room temperature (15-25°C) in a dry environment. For long-term storage, consider storing desiccated at -20°C.

Specification

Item	Specification
Appearance	White to off-white powder
Identification (HPLC-MS)	Conforms
Identification (NMR)	Conforms
Purity (HPLC)	≥98.0%
Isotopic Enrichment	≥99 atom % 13C
Chemical Purity	≥95.0%
Water Content (KF)	≤1.0%
Residual Solvents (GC)	Meets ICH guidelines

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