Isotopically Labeled Compounds
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Cayman Chemical Losartn-d4 500ug
An internal standard for the quantification of losartan (potassium salt) by GC- or LC-MS
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Medchemexpress LLC Dofetilide-d4 | 1189700-56-8 | 99.3% | 500 UG
Dofetilide-d4 is a deuterium-labeled Dofetilide, a class III antiarrhythmic agent.
- Can be used as a tracer.
- Can be used as an internal standard for quantitative analysis by NMR, GC-MS, or LC-MS.
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Medchemexpress LLC D-Alanine-d3 | 177614-69-6 | 99.3% | 92.11 | 25 MG
D-Alanine-d3 is the deuterium labeled D-Alanine. D-Alanine is a weak GlyR (inhibitory glycine receptor) and PMBA agonist, with an EC50 of 9 mM for GlyR.
- This compound can be used as a tracer.
- This compound can be used as an internal standard for quantitative analysis by NMR, GC-MS, or LC-MS.
- Stable heavy isotopes of hydrogen, carbon, and other elements have been incorporated into drug molecules, largely as tracers for quantitation during the drug development process.
- Deuteration has gained attention because of its potential to affect the pharmacokinetic and metabolic profiles of drugs.
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Cambridge Isotope Laboratories Cytidine phosphoramidite (U-13C9 98%) CP 95% 50 mg
Cytidine phosphoramidite (U-13C9 98%) CP 95% 50 mg
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Medchemexpress LLC Hippuric acid-d2 | 208928-78-3 | MFCD01317354 | 99.8% | 181.18 g·mol⁻1 | C9H7D2NO3 | 10 MG
Hippuric acid-d2 is a deuterium-labeled analogue of hippuric acid used as a stable isotope internal standard for quantitative mass spectrometry and metabolite identification. It provides a predictable mass shift for isotope-dilution assays, supporting accurate quantitation and method development.
- Deuterium-labeled internal standard for LC-MS/MS quantitation.
- Enables isotope-dilution assays with improved accuracy and precision.
- High purity (99.8%) for reliable analytical results.
- Available in small amounts suitable for method development and calibration.
- Solid form, stable under normal laboratory storage conditions.
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