Isotopically Labeled Compounds
Medchemexpress LLC Methionine-d3 | 284665-18-5 | MFCD00211078 | 99.2% | C5H8D3NO2S | 10MG
Methionine-d3 is a deuterium-labeled form of the amino acid methionine provided as a white to off-white solid. It serves as a stable-isotope internal standard for mass spectrometry, tracer studies, and analytical workflows requiring an isotopically labeled amino acid. The material offers high purity and defined storage stability, and is supplied in small milligram quantities for laboratory use.
- High purity (99.2%).
- Deuterium-labeled methyl group for mass-shifted internal standardization.
- Suitable for mass spectrometry and tracer studies.
- White to off-white solid form for easy handling and weighing.
- Stable when stored under recommended conditions for reliable performance.
Medchemexpress LLC Leucovorin-d4 (calcium hydrate) | >90.0% | 533.54 | C20H19D4CaN7O8 | 250 UG
Leucovorin-d4 (calcium hydrate) is a deuterium-labeled folinic acid supplied as the calcium hydrate salt for research and analytical applications. It is provided as a small research-grade standard (250 μg) with a listed purity of >90% and is not intended for human use.
- Deuterium-labeled folinic acid for use as an isotope standard.
- Calcium hydrate form suitable for analytical workflows.
- Purity >90.0% as specified by the supplier.
- Molecular formula C20H19D4CaN7O8 and molecular weight 533.54.
- Supplied in a 250 μg research pack for analytical or mass spectrometry applications.
- Not intended for human or clinical use; for research use only.
Cambridge Isotope Laboratories Acetonitrile-D3, 2206-26-0, MFCD00001881, 50 g
Chemical Formula: CD3CN, MW: 44.07, 99.8%, Synonyms: Methyl cyanide; Cyanomethane; Ethanenitrile.
Sigma Aldrich Fine Chemicals Biosciences Diethyl-d10-amine 98 atom % D | 120092-66-2 | MFCD00190422 | 1G
Diethyl-d10-amine 98 atom % D | Purity: 99% (CP) | Mol Wt: 83.2 | 120092-66-2 | MFCD00190422 | 1G
Sigma Aldrich Fine Chemicals Biosciences 4-Oxo-TEMPO-d16,15N, free radical 98 atom % 15N, 98 atom % D | 80404-14-4 | MFCD00190575 | 100MG
4-Oxo-TEMPO-d16,15N, free radical 98 atom % 15N, 98 atom % D | Purity: 99% (CP) | Mol Wt: 187.32 | 80404-14-4 | MFCD00190575 | 100MG
Medchemexpress LLC Carbendazim-d4 | 291765-95-2 | 99.6% | C9H5D4N3O2 | 10MG
Carbendazim-d4 is the deuterium-labeled analogue of the fungicide carbendazim, supplied as a 10 mg reference standard for analytical and research use. It is intended for use as an isotopically labeled internal standard or tracer in quantitative mass spectrometry and related analytical workflows, offering consistent performance and storage stability under recommended conditions.
- High chemical and isotopic purity.
- Suitable as an internal standard for mass spectrometry.
- Provided as a stable, dry powder for long-term storage.
- Compatible with common organic solvents for sample preparation.
- Characterized molecular weight and formula for analytical identification.
Cambridge Isotope Laboratories benzoic acid 50ul fill volume 1.7mm tube
benzoic acid 50ul fill volume 1.7mm tube
Medchemexpress LLC Nifedipine-d6 (BAY-a-1040-d6) | 1188266-14-9 | 1 MG
Nifedipine-d6 (BAY-a-1040-d6) is a deuterium labeled nifedipine, which acts as a potent calcium channel blocker. It is intended for research use only. Deuteration, the incorporation of stable heavy isotopes of hydrogen into drug molecules, has gained attention for its potential to affect the pharmacokinetic and metabolic profiles of drugs.
- Used as a tracer
- Used as an internal standard for quantitative analysis by NMR, GC-MS, or LC-MS
Medchemexpress LLC Ethambutol-d4 | 1129526-19-7 | 98.12% | 5 MG
Ethambutol-d4 is the deuterium-labeled version of Ethambutol, a bacteriostatic antimycobacterial agent. It obstructs the formation of the cell wall by inhibiting arabinosyl transferases. This compound is intended for research use only and can be utilized as a tracer or an internal standard for quantitative analysis.
- Used as a tracer in drug development
- Internal standard for quantitative analysis by NMR, GC-MS, or LC-MS
- Deuterium-labeled compound for studying pharmacokinetic and metabolic profiles
Medchemexpress LLC Cefoperazone-d5 | 2410425-70-4 | 98.6% | 500 UG
Cefoperazone-d5 is a deuterium labeled semisynthetic cephalosporin with broad-spectrum antibacterial activity. This compound is suitable for use as a tracer and as an internal standard for quantitative analysis by NMR, GC-MS, or LC-MS. Deuteration has gained attention due to its potential to affect the pharmacokinetic and metabolic profiles of drugs.
- Deuterium labeled Cefoperazone
- Semisynthetic cephalosporin with broad-spectrum antibacterial activity
- Suitable for use as a tracer
- Suitable for use as an internal standard for quantitative analysis by NMR, GC-MS, or LC-MS
- Has the potential to affect pharmacokinetic and metabolic profiles of drugs
Medchemexpress LLC Mianserin-d3 hydrochloride | 1219804-97-3 | 97.51% | 1 MG
Mianserin-d3 hydrochloride is a deuterium-labeled form of Mianserin, an orally active H1 receptor antagonist that can also activate κ-opioid and octopamine receptors. It increases ERK1/2 and CREB phosphorylation and antagonizes full κ-opioid agonist and Dynorphin A-induced MAPK phosphorylation. This compound has been observed to modulate social and exploratory behavior and raise electroconvulsive thresholds. It is investigated for research into neurological diseases like depression and epilepsy. Stable heavy isotopes, like deuterium, are incorporated into drug molecules for quantitation during drug development and can influence pharmacokinetic and metabolic profiles of drugs.
- Can be used as a tracer
- Can be used as an internal standard for quantitative analysis by NMR, GC-MS, or LC-MS
Medchemexpress LLC Succinimide-15N | 32807-36-6 | MFCD00084242 | 99.0% | 100.08 | C4H5(15)NO2 | 10 MG
Succinimide-15N is the 15N-labeled form of succinimide supplied as a powder for use as an isotope-labeled reagent in mass spectrometry, tracer studies, and biochemical analyses. It provides high isotopic enrichment and is intended for analytical workflows requiring stable nitrogen labeling.
- 15N-labeled succinimide for tracer and mass spectrometry applications.
- High isotopic and chemical purity (≥99.0%).
- Available in small research sizes such as 5 mg, 10 mg, and 25 mg.
- Powder form with recommended frozen or cold storage to maintain stability.
- CAS number: 32807-36-6.
Medchemexpress LLC 1,2-propylene-d6 carbonate | 202480-74-8 | MFCD00142486 | 98.7% | 108.13 | C4D6O3 | 50 MG
1,2-Propylene-d6 carbonate is the deuterium-labeled analogue of 1,2-propylene carbonate used as an analytical tracer and internal standard for quantitative NMR, GC-MS, and LC-MS. It is supplied as a high-purity, isotopically labeled small-molecule reagent for method development, calibration, and quantitation workflows.
- Deuterium-labeled (d6) isotopologue for mass and NMR differentiation.
- High purity (98.65%) suitable for analytical applications.
- Molecular weight 108.13 and chemical formula C4D6O3.
- Intended use as a tracer and internal standard for NMR, GC-MS, and LC-MS.
- Available in small package sizes for analytical and method development.
- Compatible with quantitative workflows and calibration procedures.
Medchemexpress LLC 1,2-propylene-d6 carbonate | 202480-74-8 | MFCD00142486 | 98.7% | 108.13 | C4D6O3 | 100 MG
1,2-Propylene-d6 carbonate is the deuterium-labeled analogue of 1,2-propylene carbonate used as a stable-isotope tracer and internal standard in analytical techniques such as NMR, GC-MS, and LC-MS. It is provided with high isotopic and chemical purity for quantitative studies and metabolic tracing.
- High isotopic labeling (d6) for clear mass shifts.
- Suitable as an internal standard for NMR, GC-MS, and LC-MS.
- High chemical purity for reliable quantitative analysis.
- Available in small research-scale packaging for method development.
- Molecular weight 108.13; formula C4D6O3.
Medchemexpress LLC Cysteamine-d4 hydrochloride | 1219805-04-5 | MFCD08704995 | 99.0% | 117.63 | C2H4D4ClNS | 10 MG
Cysteamine-d4 hydrochloride is the deuterium-labeled hydrochloride salt of cysteamine provided as a research-grade isotopically labeled reagent for analytical and biochemical studies. It is designed for use where deuterium labeling improves detection, quantification, or tracing in laboratory methods.
- Deuterium-labeled analog for isotope tracing and internal standards.
- High purity suitable for analytical applications.
- Defined molecular weight and formula for accurate mass calculations.
- Applicable to mass spectrometry, metabolic profiling, and mechanistic studies.
- Available in small research pack sizes for method development and validation.