Boceprevir-d9 | CAS 1256751-11-7

Boceprevir-d9 (CAS No. 1256751-11-7) is a high-quality stable isotope-labeled reference standard of Boceprevir, containing nine deuterium (²H) atoms incorporated into the parent molecule. It is primarily used as an internal standard for quantitative bioanalysis by LC-MS/MS and LC-HRMS, where it provides highly accurate and reproducible quantification of Boceprevir in complex biological matrices. Because the labeled compound possesses nearly identical physicochemical and chromatographic properties to the unlabeled analyte while remaining distinguishable by mass spectrometry, Boceprevir-d9 is considered the preferred internal standard for regulated bioanalytical assays, pharmacokinetic studies, therapeutic drug monitoring research, metabolism investigations, and analytical method validation.

Boceprevir itself is a selective inhibitor of the hepatitis C virus (HCV) NS3 serine protease and was developed as a direct-acting antiviral agent for chronic hepatitis C infection. Although newer antiviral therapies have largely replaced Boceprevir in clinical practice, the compound continues to be important in pharmaceutical research, bioequivalence studies, metabolite analysis, and analytical method development. Consequently, Boceprevir-d9 remains a valuable analytical reference material for pharmaceutical laboratories, CROs, bioanalytical facilities, and academic researchers developing sensitive LC-MS/MS methods.

Applications of Boceprevir-d9

Boceprevir-d9 is widely utilized in pharmaceutical and analytical laboratories because isotope-labeled internal standards significantly improve quantitative accuracy by compensating for sample preparation losses, extraction variability, matrix effects, and instrument fluctuations.

Typical applications include:

• LC-MS/MS quantitative analysis of Boceprevir in plasma, serum, and tissue samples
• Pharmacokinetic (PK) and toxicokinetic studies
• Bioavailability and bioequivalence studies
• Drug metabolism and pharmacokinetic (DMPK) research
• Clinical bioanalysis
• Method development and validation according to FDA, EMA, and ICH bioanalytical guidelines
• Therapeutic drug monitoring research
• Stability studies
• Reference standard for pharmaceutical quality control
• Research involving antiviral drug characterization

Its nearly identical chromatographic behavior compared with native Boceprevir enables highly reliable correction for extraction recovery and ion suppression, leading to superior analytical precision in regulated bioanalytical workflows.

Advantages of Using a Deuterated Internal Standard

Stable isotope-labeled compounds have become the gold standard in quantitative mass spectrometry. Unlike structural analogs, Boceprevir-d9 co-elutes with the analyte while producing a distinct mass transition, allowing simultaneous detection without analytical interference.

Major benefits include:

• Improved quantitative accuracy
• Excellent correction of matrix effects
• Reduced analytical variability
• Superior assay precision and reproducibility
• Enhanced method robustness
• Reliable recovery correction during sample preparation
• Simplified regulatory method validation
• Increased confidence in pharmacokinetic data

These advantages are particularly important in regulated GLP and GCP bioanalytical laboratories where high-quality quantitative data are essential.

Analytical Techniques

Boceprevir-d9 is compatible with numerous analytical platforms used throughout pharmaceutical research and development, including:

• LC-MS/MS
• UHPLC-MS/MS
• LC-HRMS
• UPLC-QTOF-MS
• Triple Quadrupole LC-MS
• Orbitrap-based mass spectrometry
• Method validation studies
• Metabolite identification workflows

Among these, LC-MS/MS remains the preferred technique because of its exceptional sensitivity, selectivity, and quantitative performance for isotope dilution assays.

Product Specifications

Typical specifications for Boceprevir-d9 include:

Actual specifications, purity, isotopic enrichment, and analytical documentation may vary depending on the manufactured lot.

Role in Bioanalytical Method Development

During regulated bioanalytical method development, the selection of an appropriate internal standard is critical for obtaining reproducible quantitative results. Because Boceprevir-d9 closely mimics the extraction efficiency and chromatographic retention of the parent drug, it minimizes variability introduced during sample processing. This improves assay accuracy across calibration standards, quality control samples, and unknown study samples.

The compound is routinely incorporated into validated analytical workflows for:

• Calibration curve preparation
• Accuracy and precision assessments
• Recovery evaluation
• Matrix effect studies
• Stability assessments
• Cross-validation studies
• Clinical sample analysis

Its use supports compliance with regulatory expectations for quantitative LC-MS/MS assays.

Pharmaceutical Research Applications

Boceprevir-d9 is valuable throughout the pharmaceutical development lifecycle, supporting early discovery, preclinical investigations, clinical research, and post-development analytical studies. Researchers employ this isotope-labeled standard to establish robust quantitative assays that generate reliable pharmacokinetic and metabolic data.

Applications include:

• Drug discovery research
• Pharmacokinetic profiling
• Drug-drug interaction studies
• Metabolite identification
• Bioequivalence testing
• Analytical method transfer
• Clinical research
• Pharmaceutical quality testing

Because stable isotope-labeled standards reduce analytical uncertainty, they contribute significantly to generating high-quality datasets suitable for regulatory submissions.

Storage and Handling

For optimal stability, Boceprevir-d9 should be stored according to the supplier’s recommended conditions, typically under frozen storage. Laboratories should avoid repeated freeze-thaw cycles and prepare stock and working solutions using validated laboratory procedures. Proper storage helps maintain isotopic integrity and analytical performance throughout the product’s shelf life.

Why Choose ResolveMass Laboratories Inc.?

ResolveMass Laboratories Inc. supports pharmaceutical, biotechnology, and academic organizations with advanced analytical and bioanalytical testing services. Our experienced scientific team develops, validates, and transfers highly sensitive LC-MS/MS methods using stable isotope-labeled internal standards such as Boceprevir-d9. From pharmacokinetic studies and method validation to impurity analysis and regulatory-compliant bioanalysis, we deliver high-quality analytical solutions tailored to your research and development needs.

Learn more about Deuterated Chemicals through,

• Deuterated Polymers: A Cornerstone Guide to Synthesis, Applications, and Future Trends
• Availability of All the Deuterated Chemicals at ResolveMass Laboratories Inc. 
• ResolveMass Laboratories: Leading Deuterated Chemical Synthesis Company in the United States.
• Deuterated Internal Standards for LC-MS: Selection & Custom Synthesis 
• How to Choose the Right Deuterated Labelled Chemical Synthesis Company in Canada 
• How to Choose the Right Deuterium Labelled Compounds Supplier for Your Lab 
• Deuterium-Labelled Compounds — Synthesis, Applications & Ordering 
• Custom Synthesis of Deuterated Chemicals