Sulfisoxazole-¹³C₆ Sulfafurazole-¹³C₆

4-Amino-N-(3,4-dimethyl-isoxazol-5-yl) benzene-¹³C₆-sulfonamide

Sulfisoxazole-13C6 Sulfafurazole-13C6 (CAS 1334378-46-9) is a high-purity reference standard produced and distributed by WITEGA Laboratorien Berlin-Adlershof GmbH. This stable isotope labeled sulfonamide reference material supports sensitive LC-MS/MS and GC-MS quantification and enables traceable calibration in complex matrices. It fits multi-residue workflows and provides reliable selectivity. Consequently, analysts achieve strong accuracy and precision from the start.

Use this reference standard for calibration curve preparation, system suitability, and routine QC. It streamlines method validation, recovery experiments, and confirmatory analysis. Regulated laboratories, pharmaceutical research, residue control programs, and metabolism studies benefit from consistent performance. Additionally, documentation enables audit-ready traceability. The carbon-13 labeling stabilizes ion ratios and reduces matrix effects, which improves quantitation.

Typical applications include:

• LC-MS/MS and GC-MS calibration and quantitative verification
• Method validation with defined acceptance criteria
• Confirmatory analysis under regulatory guidance
• Residue monitoring in food, feed, and environmental samples
• Metabolism and transformation pathway studies
• Multi-residue method development across diverse matrices

Key benefits of this reference standard from WITEGA Laboratorien Berlin-Adlershof GmbH:

• High chemical purity with consistent isotopic composition
• Traceability supported by lot-specific documentation
• Robust detection and quantification in complex matrices
• Optimized for calibration, routine QC, and confirmatory testing
• Reliable performance for regulated workflows and research

Choose Sulfisoxazole-13C6 Sulfafurazole-13C6 to increase data confidence and throughput. It integrates smoothly into established LC-MS/MS or GC-MS protocols. Moreover, it helps maintain reproducible results over time, from single-analyte assays to advanced multi-residue methods.

You can download your Safety Data Sheet for SA014

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