Desethoxyhydroxy Ticagrelor-D7

Desethoxyhydroxy Ticagrelor-D7 is a deuterium-labeled (D7) stable isotope analog of desethoxyhydroxy ticagrelor, a structurally related metabolite/impurity of ticagrelor, a widely prescribed oral P2Y12 receptor antagonist used to reduce the risk of thrombotic cardiovascular events. The D7-labeled analog contains seven deuterium atoms incorporated into the propylthio moiety while maintaining nearly identical physicochemical properties to the unlabeled compound. This isotopic labeling enables the compound to function as an ideal internal standard in quantitative LC-MS/MS methods, providing accurate correction for extraction efficiency, ion suppression, and instrument variability. Commercial suppliers report the molecular formula as C21H19D7F2N6O3S with a molecular weight of approximately 487.57 g/mol.

In pharmaceutical analytical laboratories, Desethoxyhydroxy Ticagrelor-D7 plays an essential role in regulated bioanalytical studies, impurity quantification, pharmacokinetic investigations, metabolite identification, and analytical method validation. Since stable isotope-labeled compounds co-elute with their unlabeled counterparts while being distinguishable by mass spectrometry, they provide superior analytical accuracy compared to structurally unrelated internal standards.

Applications in Pharmaceutical Research

Desethoxyhydroxy Ticagrelor-D7 is widely used during every stage of pharmaceutical development and lifecycle management of ticagrelor products. Its major applications include:

• LC-MS/MS quantitative bioanalysis
• Bioequivalence (BE) studies
• Pharmacokinetic (PK) investigations
• Metabolite profiling
• Drug metabolism studies
• Forced degradation studies
• Stability-indicating analytical methods
• Analytical method development and validation
• Quality control testing
• Pharmaceutical impurity analysis
• Reference standard qualification
• Regulatory submission support for ANDA and NDA projects

Because the labeled compound behaves almost identically to the analyte throughout sample preparation and chromatographic separation, it effectively compensates for matrix effects encountered during plasma, serum, urine, and tissue analysis.

Importance as an Internal Standard

One of the primary advantages of Desethoxyhydroxy Ticagrelor-D7 is its ability to improve quantitative accuracy during LC-MS/MS analysis. Stable isotope-labeled internal standards undergo the same extraction, chromatographic separation, and ionization processes as the target analyte. Consequently, they compensate for variability arising from:

• Sample preparation losses
• Protein precipitation recovery
• Solid-phase extraction variability
• Matrix-induced ion suppression
• Instrument response fluctuations
• Injection volume variation
• Day-to-day analytical variability

These characteristics make Desethoxyhydroxy Ticagrelor-D7 an excellent internal standard for highly sensitive bioanalytical assays performed according to FDA and ICH bioanalytical method validation expectations. Commercial suppliers specifically market deuterated ticagrelor analogs for analytical method development, validation, quality control, and regulated pharmaceutical testing.

Role in Bioanalytical Method Development

Modern bioanalytical methods require high sensitivity, precision, and reproducibility. Desethoxyhydroxy Ticagrelor-D7 supports these requirements by providing reliable quantification across a broad concentration range.

Typical bioanalytical workflows include:

• Plasma sample preparation
• Protein precipitation or SPE extraction
• Internal standard addition
• LC separation
• Tandem mass spectrometric detection
• Quantitative data processing

Using a deuterated internal standard improves calibration curve linearity and enhances assay precision, particularly when quantifying trace-level analytes in complex biological matrices.

Pharmaceutical Quality Control Applications

Beyond bioanalysis, Desethoxyhydroxy Ticagrelor-D7 is valuable in pharmaceutical quality control laboratories. It supports:

• Analytical method transfer
• Precision and robustness studies
• System suitability evaluation
• Method troubleshooting
• Batch release testing
• Stability sample analysis
• Comparative impurity profiling

The compound is particularly useful when developing highly selective LC-MS/MS methods for impurity determination in ticagrelor drug substance and finished dosage forms.

Advantages of Stable Isotope-Labeled Standards

Compared with conventional external standards, Desethoxyhydroxy Ticagrelor-D7 offers several analytical benefits:

• Nearly identical chromatographic retention to the analyte
• Equivalent extraction behavior
• Minimal isotope effect
• Excellent correction of matrix interference
• Improved assay precision
• Higher reproducibility
• Enhanced quantitative confidence
• Greater robustness during routine analysis
• Regulatory acceptance in validated LC-MS/MS methods

These advantages significantly reduce analytical variability and improve confidence in quantitative results generated during regulated pharmaceutical studies.

Analytical Techniques Supported

Desethoxyhydroxy Ticagrelor-D7 is compatible with numerous advanced analytical platforms, including:

• LC-MS/MS
• UHPLC-MS/MS
• HPLC-MS
• High-resolution mass spectrometry (HRMS)
• Triple quadrupole LC-MS
• Orbitrap MS
• QTOF-MS
• Metabolite identification workflows
• Quantitative bioanalytical assays

The compound is particularly valuable in multiple reaction monitoring (MRM) methods where accurate isotope discrimination provides highly selective quantification.

Research and Regulatory Significance

As regulatory agencies continue emphasizing robust bioanalytical validation and reliable impurity assessment, stable isotope-labeled standards have become indispensable analytical tools. Desethoxyhydroxy Ticagrelor-D7 helps laboratories generate reproducible data suitable for:

• Regulatory submissions
• Good Laboratory Practice (GLP) studies
• Good Manufacturing Practice (GMP) quality control
• Clinical pharmacokinetic studies
• Bioequivalence programs
• Pharmaceutical research and development
• Contract research laboratory services

Its application aligns with modern expectations for scientifically sound, reproducible, and traceable analytical measurements.

Why Choose ResolveMass Laboratories Inc.?

ResolveMass Laboratories Inc. provides comprehensive analytical support for pharmaceutical innovators, generic manufacturers, and CRO partners. Our expertise in mass spectrometry enables the development, qualification, and application of stable isotope-labeled reference standards such as Desethoxyhydroxy Ticagrelor-D7 for complex analytical workflows.

Our capabilities include:

• LC-MS/MS method development
• Bioanalytical method validation
• Stable isotope-labeled internal standard applications
• Pharmaceutical impurity characterization
• Forced degradation studies
• Metabolite identification
• Extractables and leachables analysis
• High-resolution mass spectrometry
• Regulatory-compliant analytical documentation
• Customized analytical solutions for NDA, ANDA, and clinical development programs

With extensive experience in pharmaceutical analytical sciences, ResolveMass Laboratories Inc. delivers high-quality, scientifically rigorous solutions that support drug development from early research through commercial manufacturing.

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