4-Amino-N-(2-phenyl-2H-pyrazol-3-yl)-benze-ne-¹³C₆-sulfonamide

Sulfaphenazole 13C6 (CAS 1420043-53-3) is a stable isotope labeled reference standard produced and distributed by WITEGA Laboratorien Berlin-Adlershof GmbH. Use this traceable analytical standard as an LC-MS/MS calibration solution and as a confirmatory analysis material in residue workflows. It supports antibiotic residue method validation and precise quantitative performance in challenging matrices. As a result, laboratories gain reproducible data, improved selectivity, and robust calibration across routine and research applications.

Designed for LC-MS/MS and GC-MS, this reference standard enables accurate quantification, system calibration, method validation, and ongoing quality control. High isotopic enrichment improves differentiation from native analyte signals, while high chemical purity helps maintain clean baselines. Furthermore, batch-specific documentation supports traceability for audits and data integrity. Therefore, you can build reliable calibration curves, verify linearity, and perform confirmatory analysis with confidence.

Typical use cases include:

• Regulated laboratories conducting residue control and surveillance programs.
• Pharmaceutical research exploring sulfonamide metabolism and biotransformation.
• Multi-residue method development requiring robust matrix-matched calibration.
• Routine proficiency testing and cross-lab comparability studies.

Key benefits:

• Optimized for LC-MS/MS and GC-MS quantification and calibration.
• Supports method validation, recovery studies, and selectivity checks.
• Enhances traceability with batch-specific CoA and clear documentation.
• Consistent performance for confirmatory analysis across matrices.

Practical guidance: prepare working solutions in suitable solvents such as methanol or acetonitrile. Then establish multi-point calibration, verify accuracy with QC levels, and confirm identification with MRM or SIM criteria. Finally, integrate this reference standard into routine checks to maintain ongoing system suitability.

This reference standard is produced and distributed by WITEGA Laboratorien Berlin-Adlershof GmbH, ensuring dependable quality, documentation, and support for your analytical workflows.

You can download your Safety Data Sheet for SA020

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