5-[3,4,5-Tri(methoxy-¹³C)benzyl]pyrimidine-2,4-diamine

Trimethoprim 13C3 (CAS 1189970-95-3) is a high-purity reference standard produced and distributed by WITEGA Laboratorien Berlin-Adlershof GmbH. This stable isotope labeled compound supports reliable LC-MS/MS and GC-MS analytical quantification with robust traceability. Use it to build calibrated curves, verify method performance, and conduct confirmatory analysis with confidence. Furthermore, laboratories benefit from consistent response factors that streamline matrix-matched calibration and enhance data integrity.

Designed for modern workflows, this reference standard helps you accelerate validation while meeting compliance demands. It performs consistently across multiple matrices and instruments, enabling reproducible results from screening to confirmation. Produced by WITEGA, each lot comes with comprehensive batch documentation for full audit readiness.

Key features and benefits:

• High chemical purity and defined isotopic enrichment for precise quantification
• Traceable production and lot-specific documentation to support accreditation
• Optimized for LC-MS/MS and GC-MS workflows, including MRM and SIM methods
• Reliable calibration and recovery assessment across complex matrices
• Confident confirmatory analysis and rugged method validation

Typical applications:

• Regulated laboratory testing and quality control
• Pharmaceutical research and development
• Residue control in food, feed, and veterinary drug monitoring
• Metabolism studies and pharmacokinetic investigations
• Multi-residue method development and routine screening

With Trimethoprim 13C3 (CAS 1189970-95-3), you obtain consistency from calibration through verification, helping you meet recovery targets and reporting limits. The reference standard enables accurate quantification, clear traceability, and strong method robustness, ensuring dependable results in high-throughput environments. Choose the proven quality from WITEGA Laboratorien Berlin-Adlershof GmbH to elevate your analytical performance.

You can download your Safety Data Sheet for OP230

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