Isotopically Labeled Compounds
Medchemexpress LLC Olaparib-d5 | 2143107-56-4 | MFCD34469897; MFCD12912443 | 99.4% | 439.49 g·mol-1 | C24H18D5FN4O3 | 1 MG
Olaparib-d5 is the deuterium-labeled analogue of olaparib intended for use as a stable isotope internal standard in quantitative LC-MS/MS and pharmacokinetic studies. It offers a mass-shifted counterpart to the parent drug while maintaining similar chromatographic properties, enabling precise quantitation and method validation in analytical workflows.
- Stable isotope-labeled internal standard for LC-MS/MS assays.
- Provides a mass-shifted analogue for accurate quantitation.
- Near-identical chromatographic behavior to the parent compound.
- High purity suitable for analytical and pharmacokinetic studies.
- Soluble in DMSO and DMF; limited solubility in ethanol.
- Recommended storage: powder at -20°C; in solution at -80°C for extended storage.
Cambridge Isotope Laboratories DOPAMINE:HCL (2-(3,4-DIHYDROXYPHENYL)- ETHYLAMINE:HCL) (1,1,2,2-D4, 97-98%), 0.1 G, 203633-19-6
DOPAMINE:HCL (2-(3,4-DIHYDROXYPHENYL)- ETHYLAMINE:HCL) (1,1,2,2-D4, 97-98%), 0.1 G, 203633-19-6
Medchemexpress LLC Creatine-d5 monohydrate | 99.9% | 154.18 g/mol | C4H6D5N3O3 | 5 MG
Creatine-d5 monohydrate is a deuterium-labeled form of creatine monohydrate used as a stable-isotope internal standard and analytical reference for quantitative LC-MS/MS and tracer studies. It separates from unlabeled creatine, enabling accurate quantitation in biological, food, and analytical matrices.
- Stable-isotope labeled for use as an internal standard.
- High purity (99.93%) for reliable analytical performance.
- Suitable for LC-MS/MS quantitation and tracer studies.
- Small package sizes support method development and validation.
- Provides a clear mass shift from unlabeled analyte for peak identification.
Selleck Chemical LLC Cyclosporin A-d4 E8253-1MG
Cyclosporin A-d4 is a deuterated derivative of cyclosporin A Cyclosporin A is a nonpolar cyclic oligopeptide and an immunosuppressant
Medchemexpress LLC Oseltamivir-d3 phosphate | 2734919-89-0 | 413.42 | C16H28D3N2O8P | 5 MG
Oseltamivir-d3 Phosphate is the deuterium-labeled form of oseltamivir phosphate supplied for research use as a tracer and internal standard in quantitative analytical workflows such as NMR, GC-MS, and LC-MS. It is intended for scientific research and drug declaration purposes only and not for personal or clinical use.
- Deuterium-labeled internal standard for analytical assays.
- Suitable for NMR, GC-MS, and LC-MS quantitative analysis.
- Provided in small, analytical-scale quantities for method development and calibration.
- Product datasheet available for purity and product data details.
Cayman Chemical Atovaquone-d4, Purity: ≥99% deuterated forms (d1-d4), CAS: 2070015-14-2, 1 mg
An internal standard for the quantification of atovaquone by GC- or LC-MS
Medchemexpress LLC C18-ceramide-13C2,d2 | 569.95 g·mol⁻1 | C3413C2H69D2NO3 | 1 MG
C18-ceramide-13C2,d2 is a stable isotope-labeled C18 ceramide intended for use as an internal standard in lipidomics and mass spectrometry. The dual 13C and deuterium labels provide a defined mass shift to support accurate quantitation and metabolic tracing in analytical workflows.
- Stable isotope labeled with 13C2 and d2 for clear mass-shifted detection.
- Suitable as an internal standard for quantitative mass spectrometry workflows.
- Useful for metabolic tracing and method development in lipidomics.
- Provided as a small, research-grade quantity for analytical applications.
![Revvity Health Sciences Inc Ifenprodil, [Phenyl-<sup>3</sup>H]-, 250µCi (9.25MBq)](https://assets.fishersci.com/TFS-Assets/CCG/product-images/502810373.jpg-250.jpg)
Revvity Health Sciences Inc Ifenprodil, [Phenyl-3H]-, 250µCi (9.25MBq)
Ifenprodil, [Phenyl-3H]-, 250µCi (9.25MBq)
Cambridge Isotope Laboratories SODIUM PYRUVATE (3-13C, 99%), 1 G, 124052-04-6
SODIUM PYRUVATE (3-13C, 99%), 1 G, 124052-04-6
Medchemexpress LLC Pazopanib-d6 | 1219592-01-4 | MFCD11110377 | 98.0% | 443.55 g/mol | C21H17D6N7O2S | 1 MG
Pazopanib-d6 is the deuterium-labeled analogue of pazopanib supplied as a research reagent for use as an internal standard in analytical and pharmacokinetic studies. The material is provided as a small weighed quantity of dry powder and should be stored under recommended cold conditions.
- Deuterium-labeled internal standard suitable for LC-MS/MS and PK assays
- High purity (98.0%) for reliable quantitative analysis
- Chemical formula C21H17D6N7O2S and molecular weight 443.55 g/mol
- Available in small weighed quantities for analytical workflows
- Store powder at -20°C for long-term stability
Cayman Chemical Avobenzone-13C-d3, Purity: ≥99% deuterated forms (d1-d3), CAS: 2933758-47-3, 10 mg
An internal standard for the quantification of avobenzone by GC- or LC-MS
Medchemexpress LLC D-tyrosine-d4 | 944386-47-4 | 99.0% | 185.21 g/mol | C9H7D4NO3 | 5mg
D-Tyrosine-d4 is the deuterium labeled D-Tyrosine (HY-Y0444)[1] D-Tyrosine is the D-isomer of tyrosine D-Tyrosine negatively regulates melanin synthesis by inhibiting tyrosinase activity D-Tyrosine inhibits biofilm formation and trigger the self-dispersal of biofilms without suppressing bacterial growth[2][3]
Medchemexpress LLC Uridine-d2-1 | 40632-21-1 | 98.5% | 1 MG
Uridine-d2-1 is the deuterium labeled Uridine. This compound can be used as a tracer and as an internal standard for quantitative analysis by NMR, GC-MS, or LC-MS. Deuteration has gained attention because of its potential to affect the pharmacokinetic and metabolic profiles of drugs.
- Deuterium labeled uridine.
- Can be used as a tracer.
- Can be used as an internal standard for quantitative analysis by NMR, GC-MS, or LC-MS.
- Deuteration has potential to affect pharmacokinetic and metabolic profiles of drugs.
Medchemexpress LLC L-homocysteine-d4 | 331665-12-4 | 94.9% | 139.21 | C4H5D4NO2S | 500 UG
L-Homocysteine-d4 is a deuterium-labeled analogue of the amino acid L-homocysteine, supplied as an isotopic reference material for analytical and research applications. It is intended for use as an internal standard, tracer, or reference in quantitative assays that require a stable isotope-labeled compound. Follow the supplier COA and SDS for purity, handling, and storage recommendations.
- Deuterium-labeled L-homocysteine for isotope-dilution assays.
- Suitable as an internal standard for LC-MS/MS and GC-MS quantitation.
- High purity suitable for analytical use (verify COA for batch-specific value).
- Molecular weight approximately 139.21 and formula C4H5D4NO2S.
- Provided in small-quantity solid format for trace-level standards.
Medchemexpress LLC Leukotriene B4-d4 25ug | 124629-74-9 | 25UG
Leukotriene B4-d4 is the deuterium labeled Leukotriene B4 Leukotriene B4 (LTB4) is known as one of the most potent chemoattractants and activators of leukocytes and is involved in inflammatory diseases Leukotriene B4 is also an alkyl chain-based PROTAC linker that can be used in the synthesis of PROTACs[1 [2 [3