Isotopically Labeled Compounds
Medchemexpress LLC Paraxanthine-d6 | 117490-41-2 | 98.9% | 186.20 g/mol | C7H2D6N4O2 | 5 MG
Paraxanthine-d6 is the deuterium-labeled isotopologue of paraxanthine, supplied for research use as a stable isotope tracer and analytical reference. It is intended for mass spectrometry, metabolic tracing, and pharmacokinetic studies, providing an isotopically labeled standard for accurate quantitation and identification.
- Deuterium-labeled isotopologue for tracer and reference use.
- Suitable for mass spectrometry quantitation and method development.
- Useful in metabolic tracing and pharmacokinetic studies.
- High chemical purity suitable for analytical applications.
- Available in small, precisely weighed quantities for research workflows.
Medchemexpress LLC 1-hydroxypyrene-d9 | 132603-37-3 | MFCD04972163 | 100.0% | 227.31 g/mol | C16HD9O | 5 MG
1-Hydroxypyrene-d9 is a deuterium-labeled analogue of 1-hydroxypyrene used as an internal standard and tracer in analytical assays for polycyclic aromatic hydrocarbons (PAHs). It is intended for research use and supplied as a white to off-white solid with high isotopic and chemical purity.
- High isotopic enrichment and 99.95% purity.
- Suitable as an internal standard for GC-MS, LC-MS, and NMR.
- White to off-white solid, convenient for small-scale analytical use.
- Stable when stored at -20°C as powder and under recommended solvent conditions.
- Packaged in small quantities for trace-level quantitation.
Medchemexpress LLC Benzothioamide-d5 | 1219804-59-7 | >98.0% | 142.23 g/mol | C7H2D5NS | 10 MG
Benzothioamide-d5 is a deuterium-labeled benzothioamide supplied as a solid powder for research use. It is intended as a tracer or internal standard to improve quantitation in analytical workflows and may be used to investigate pharmacokinetic or metabolic differences introduced by deuteration.
- Deuterium-labeled (d5) for use as tracer or internal standard.
- Suitable for NMR, GC-MS, and LC-MS quantitative analysis.
- Solid powder form for ease of handling and storage.
- Available in multiple small-mass sizes for analytical applications.
- Stable when stored at -20 °C; in solvent stability at -80 °C for short-term storage.
Medchemexpress LLC 1-bromoheptane-d15 | 98195-42-7 | 194.19 g·mol⁻¹ | C7D15Br | 50 MG
1-Bromoheptane-d15 is a deuterium-labeled analogue of 1-bromoheptane (C7D15Br, MW 194.19 g·mol⁻¹) used as an isotopic standard and reagent in synthetic and analytical chemistry. It is supplied as a liquid, typically colorless to light yellow, and is intended for applications that require deuterium incorporation or accurate mass-based quantitation.
- Deuterium-labeled (d15) for isotopic tracing and mass-spectrometry quantitation
- Chemical formula C7D15Br; molecular weight 194.19 g·mol⁻¹
- Supplied as a liquid, colorless to light yellow
- Suitable as an internal standard for mass spectrometry
- Useful in mechanistic studies, tracer experiments, and synthetic applications requiring deuterium
Medchemexpress LLC Ethyl octanoate-d15 | 1219798-38-5 | 98.5% | 187.36 g/mol | C10H5D15O2 | 1 MG
Ethyl octanoate-d15 is the deuterium-labeled analogue of ethyl octanoate supplied as a high-purity liquid for use as a tracer and internal standard in quantitative NMR, GC-MS, and LC-MS analyses. It is intended for research use only and has documented storage and stability recommendations.
Medchemexpress LLC Hexanedioic acid dimethyl ester-d4 | 55724-08-8 | 99.4% | 178.22 g/mol | C8H10D4O4 | 5 MG
Dimethyl adipate-d4 is the deuterium-labeled (d4) isotopic form of dimethyl adipate (hexanedioic acid dimethyl ester). It is supplied as a high-purity analytical standard for research and analytical workflows, commonly used as an internal standard in mass spectrometry and as a synthetic intermediate in organic synthesis.
- Deuterium-labeled (d4) isotopic standard suitable for mass spectrometry.
- High purity (99.4%) for reliable quantitation.
- Molecular weight 178.22 g/mol for accurate mass calibration.
- Available in small-scale quantities including 5 mg for trace analysis.
- Suitable as an internal standard and analytical reference in method development.
Medchemexpress LLC Suberic acid-d4 | 19031-57-3 | 99.9% | 178.22 | C8H10D4O4 | 10 MG
Suberic acid-d4 is the deuterium-labeled analogue of suberic (octanedioic) acid used as an internal standard and reference material in mass spectrometry and metabolic studies. Supplied as an analytical-grade solid in small mg-scale packaging, it is intended for quantitative assays, method development, and metabolite identification.
- Deuterium-labeled internal standard for mass spectrometry.
- High isotopic and chemical purity for accurate quantitation.
- Suitable for quantitative assays and method development.
- Stable solid form for convenient storage and handling.
- Soluble in common solvents for sample preparation workflows.
Cambridge Isotope Laboratories 3 3 4 4 5-PentaBDE (BDE-126) (13C12 99%) 50 ug/mL in nonane 1 2 mL
3 3 4 4 5-PentaBDE (BDE-126) (13C12 99%) 50 ug/mL in nonane 1 2 mL
Medchemexpress LLC Isobutyl 4-hydroxybenzoate-d4 | 1219805-33-0 | 98.5% | 198.25 g/mol | C11H10D4O3 | 10 MG
Isobutylparaben-d4 is the deuterium-labeled analogue of isobutylparaben used as an internal standard and analytical reference for LC-MS and related assays. It is provided as a solid at high purity for quantitative analysis and method development.
- Deuterium-labeled internal standard for analytical assays.
- High purity suitable for quantitative LC-MS applications.
- Available in small vial sizes for laboratory use.
- Stable isotope provides accurate quantification and traceability.
- Compatible with common organic solvents and sample preparation workflows.
Medchemexpress LLC L-histidine-d5 hydrochloride hydrate | 2483831-75-8 | 99.6% | 214.66 g/mol | C6H7D5ClN3O3 | 100 MG
L-histidine-d5 hydrochloride hydrate is the deuterium-labeled form of L-histidine hydrochloride hydrate supplied as a hydrochloride hydrate salt. It is intended for analytical and research use as an isotopically labeled standard or tracer for mass spectrometry and metabolic studies, enabling accurate quantitation and isotope-tracing experiments.
- Deuterium-labeled amino acid useful for isotope tracing and metabolic studies.
- High purity (99.63%) suitable for analytical applications.
- Molecular formula C6H7D5ClN3O3 and molecular weight 214.66 g/mol.
- Available in small pack sizes appropriate for standards (1 mg-500 mg).
- Supplied as a hydrochloride hydrate for enhanced solubility and stability.
- Suitable as an internal standard for quantitative mass spectrometry.
Medchemexpress LLC Hippuric acid-d5 | 53518-98-2 | 99.7% | 184.20 | C9H4D5NO3 | 5 MG
Hippuric acid-d5 is the deuterium-labeled isotopologue of hippuric acid supplied as a stable isotope standard for analytical and biochemical research. It is provided as a high-purity solid for use in quantitative LC-MS assays, method development, and metabolic studies; intended for research use only.
Cambridge Isotope Laboratories Estradiol (3 4-13C2 99%) 100 ug/mL in acetonitrile 1 2 mL
Estradiol (3 4-13C2 99%) 100 ug/mL in acetonitrile 1 2 mL
Medchemexpress LLC 1,2-Propylene-d6 carbonate | 202480-74-8 | MFCD00142486 | 98.7% | 108.13 | C4D6O3 | 25 MG
1,2-Propylene-d6 carbonate is the deuterium-labeled analogue of 1,2-propylene carbonate used as a stable-isotope internal standard and tracer for quantitative analysis by NMR, GC-MS, and LC-MS. Deuteration provides isotopic distinction for accurate quantitation in metabolic and analytical studies.
- Deuterium-labeled analogue for isotope-dilution quantitation.
- Suitable as an internal standard for NMR, GC-MS, and LC-MS.
- High purity for reliable analytical results.
- Molecular weight 108.13 and formula C4D6O3.
- Colorless to light yellow liquid physical form.
- Available in small pack sizes for analytical use.
Medchemexpress LLC 1-hydroxypyrene-d9 | 132603-37-3 | MFCD04972163 | 100.0% | 227.31 g·mol⁻¹ | C16HD9O | 10 MG
Deuterium-labeled 1-hydroxypyrene (d9) is an isotopically labeled internal standard used for quantitative analysis of 1-hydroxypyrene in biological and environmental samples by GC-MS or LC-MS. Supplied as a high-purity white to off-white powder, it provides consistent response and traceability for analytical and metabolic studies.
- High isotopic and chemical purity for accurate quantification.
- Suitable as an internal standard for GC-MS and LC-MS methods.
- Solid powder form for convenient handling and spiking.
- Storage at -20°C preserves long-term stability.
- Available in small sizes tailored to analytical workflows.