Doxapram-d8 HCl | CAS 309-29-5

Doxapram-d8 HCl (CAS 309-29-5) is a high-quality stable isotope-labeled analog of doxapram hydrochloride designed for use as an internal standard in quantitative analytical methods. The incorporation of eight deuterium atoms provides excellent isotopic stability while maintaining nearly identical physicochemical behavior to the unlabeled compound, making it an ideal reference standard for LC-MS/MS, GC-MS, HRMS, pharmacokinetic, bioanalytical, forensic toxicology, and pharmaceutical research applications. Stable isotope-labeled compounds such as Doxapram-d8 HCl significantly improve assay accuracy by compensating for sample preparation losses, ion suppression, extraction variability, and instrument fluctuations during quantitative analysis.

At ResolveMass Laboratories Inc., Doxapram-d8 HCl is supplied exclusively for research and laboratory use. It is intended to support pharmaceutical development, analytical method development, method validation, clinical research, and quality control laboratories requiring highly reliable isotope-labeled reference materials.

Why Choose Doxapram-d8 HCl?

Stable isotope-labeled internal standards are considered the gold standard for quantitative mass spectrometry because they closely mimic the chromatographic and extraction characteristics of the target analyte while remaining distinguishable by their mass difference. Doxapram-d8 HCl co-elutes with native doxapram, allowing precise correction for analytical variability throughout the workflow.

Using Doxapram-d8 HCl can improve:

• Quantitative accuracy and precision
• Recovery correction during sample preparation
• Compensation for matrix effects and ion suppression
• Reproducibility between analytical runs
• Compliance with regulatory bioanalytical validation expectations
• Confidence in pharmacokinetic and bioequivalence studies

These advantages make isotope-labeled standards indispensable in regulated analytical laboratories performing quantitative LC-MS/MS assays.

Applications

Doxapram-d8 HCl is widely used across pharmaceutical, clinical, academic, and contract research laboratories for:

• LC-MS/MS quantitative bioanalysis
• High-resolution mass spectrometry (HRMS)
• Pharmacokinetic (PK) studies
• Bioavailability and bioequivalence studies
• Drug metabolism research
• Clinical research assays
• Toxicology testing
• Therapeutic drug monitoring method development
• Analytical method validation
• Pharmaceutical quality control
• Reference standard preparation
• Instrument calibration and performance verification

Because isotope-labeled compounds behave almost identically to their non-labeled counterparts during extraction and chromatographic separation, they are particularly valuable when developing highly sensitive quantitative methods.

Chemical Information

Doxapram is a respiratory stimulant belonging to the pyrrolidinone class of compounds. The isotope-labeled version, Doxapram-d8 HCl, contains eight deuterium atoms strategically incorporated into the molecular structure while preserving its analytical characteristics. This isotopic substitution produces a predictable mass shift without significantly altering chromatographic retention or extraction efficiency, making it highly suitable for quantitative mass spectrometric analysis.

Ideal for Pharmaceutical Research

Pharmaceutical companies and CRO laboratories rely on isotope-labeled reference standards during every stage of drug development. Doxapram-d8 HCl supports:

• Bioanalytical assay development
• GLP-compliant studies
• Clinical sample analysis
• Method transfer
• Assay robustness evaluation
• Stability studies
• Cross-validation between laboratories
• Regulatory submission support

Its use helps laboratories achieve greater confidence in quantitative results while minimizing analytical variability.

Advantages of Stable Isotope-Labeled Standards

Compared with structural analogs, stable isotope-labeled internal standards provide superior analytical performance because they:

• Exhibit nearly identical extraction efficiency
• Co-elute with the target analyte
• Experience the same ionization environment
• Correct for matrix effects
• Improve assay reproducibility
• Reduce quantitative bias
• Enhance analytical sensitivity
• Support regulatory-compliant bioanalytical methods

These characteristics make Doxapram-d8 HCl an essential component of validated LC-MS/MS workflows.

Quality and Reliability

ResolveMass Laboratories Inc. understands the importance of high-quality analytical reference materials. Every isotope-labeled standard is selected to support demanding analytical applications requiring consistent performance and reliable quantitative data.

Our isotope-labeled standards are suitable for use in:

• Pharmaceutical R&D laboratories
• CRO and CDMO analytical laboratories
• Academic research institutions
• Clinical research organizations
• Government laboratories
• Toxicology laboratories
• Quality control laboratories

Analytical Techniques Supported

Doxapram-d8 HCl is compatible with numerous analytical platforms, including:

• LC-MS/MS
• UHPLC-MS/MS
• LC-HRMS
• GC-MS
• GC-MS/MS
• Orbitrap MS
• QTOF-MS
• Triple Quadrupole LC-MS
• High-resolution accurate mass spectrometry

These techniques are routinely employed for quantitative pharmaceutical analysis, metabolite identification, forensic investigations, and bioanalytical research.

Why ResolveMass Laboratories Inc.?

ResolveMass Laboratories Inc. supports pharmaceutical and biotechnology organizations with high-quality analytical standards and advanced mass spectrometry expertise. Our commitment to scientific excellence, quality, and technical support enables researchers to develop robust analytical methods with confidence.

Whether you are developing a new LC-MS/MS assay, validating a bioanalytical method, or performing regulated quantitative analysis, ResolveMass can provide dependable isotope-labeled reference standards that help improve analytical accuracy and reproducibility.

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