Nalidixic acid-D₅

1,4-Dihydro-1-ethyl-D₅-7-methyl-1,8-naphthyridine-4-one-3-carboxylic acid

Nalidixic acid-D5 (CAS 1189467-36-4) is a high-purity reference standard produced and distributed by WITEGA Laboratorien Berlin-Adlershof GmbH. This deuterated quinolone reference enables reliable LC-MS/MS and GC-MS quantification, traceability, calibration, method validation, and confirmatory analysis in demanding workflows.

Built for mass spectrometry performance, the material supports precise isotope dilution approaches while maintaining clear chromatographic behavior. Moreover, verified purity and lot documentation help deliver traceable data across instruments and matrices. Therefore, analysts can establish linear calibration models with confidence and meet strict reporting limits.

Key advantages include:

• Consistent response factors for LC-MS/MS and GC-MS calibration.
• Traceability supported by lot-specific documentation.
• Robust performance for confirmatory analysis and verification.
• Strong suitability for multi-residue method development.
• Excellent utility in metabolism studies and time-course experiments.

Typical users include regulated laboratories that require defensible measurements, as well as teams in pharmaceutical research, residue control, and toxicology. Additionally, the reference standard streamlines method validation by reducing uncertainty and improving day-to-day reproducibility. It also supports quality control checkpoints throughout the analytical workflow.

In practical terms, use this reference standard to calibrate instruments, verify accuracy with check levels, and confirm target findings. Furthermore, it assists in establishing recovery, matrix effects, and linearity during method optimization. Nalidixic acid-D5 (CAS 1189467-36-4) from WITEGA Laboratorien Berlin-Adlershof GmbH helps ensure traceable quantification and defensible results from sample intake to final report.

You can download your Safety Data Sheet for CH003

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