Isotopically Labeled Compounds
Medchemexpress LLC D-alanine-d3 | 177614-69-6 | 99.3% | 92.11 | C3H4D3NO2 | 10 MG
D-Alanine-d3 is the deuterium-labeled isotopologue of D-alanine supplied for research use. It is reported as a weak agonist of the inhibitory glycine receptor (GlyR) and PMBA, with an EC50 of 9 mM, and is provided at high chemical purity for use as an internal standard or tracer.
- Deuterium-labeled D-alanine (3,3,3-d3).
- Suitable as an internal standard for mass spectrometry and tracer studies.
- Reported weak GlyR and PMBA agonist; EC50 = 9 mM.
- High purity (99.3%), supports analytical applications.
- Available in small pack sizes (for example, 10 MG) for laboratory research.
Cambridge Isotope Laboratories SODIUM L-LACTATE (3-13C, 98%) 20% W/W IN H2O, 1 G OF C, 201595-70-2
SODIUM L-LACTATE (3-13C, 98%) 20% W/W IN H2O, 1 G OF C, 201595-70-2
Medchemexpress LLC (±)-Linalool-d3 (vinyl-d3) | 1216673-02-7 | MFCD11109274 | 95.2% | 157.27 g/mol | C10H15D3O | 10 MG
Linalool-d3 is a deuterium-labeled analogue of the natural monoterpene linalool, supplied as a stable-isotope reference standard for analytical and research use. It is intended for use as an internal standard and for isotope-tracing experiments in GC-MS or LC-MS workflows, with documented purity, molecular weight, and solubility information available in the manufacturer datasheet and certificates.
- Deuterium-labeled internal standard for analytical assays.
- High purity suitable for quantitation and method validation.
- Soluble in common organic solvents, including DMSO.
- Provided in a small, laboratory-scale vial for trace-level work.
- Recommended storage conditions to preserve stability.
Cambridge Isotope Laboratories DIETHYL MALONATE (1,3-13C2, 99%), 1 G, 77386-82-4
DIETHYL MALONATE (1,3-13C2, 99%), 1 G, 77386-82-4
Cambridge Isotope Laboratories L-LYSINE:2HCL (4,4,5,5-D4, 96-98%), 0.25 G
L-LYSINE:2HCL (4,4,5,5-D4, 96-98%), 0.25 G
Medchemexpress LLC Nonanoic acid-d2 | 62689-94-5 | 25 MG
Nonanoic acid-d2 is a deuterium-labeled version of Nonanoic acid, a naturally occurring saturated fatty acid with nine carbon atoms. Deuteration, the incorporation of stable heavy isotopes like hydrogen and carbon into drug molecules, is used as a tracer during drug development and has the potential to influence the pharmacokinetic and metabolic profiles of drugs.
- Significantly reduces bacterial translocation
- Enhances antibacterial activity
- Substantially increases the secretion of porcine β-defensins 1 (pBD-1) and pBD-2
- Can be used as a tracer
- Can be used as an internal standard for quantitative analysis by NMR, GC-MS, or LC-MS
Cambridge Isotope Laboratories L-PHENYLALANINE (RING-D5, 98%), 5 G, 56253-90-8
L-PHENYLALANINE (RING-D5, 98%), 5 G, 56253-90-8
Medchemexpress LLC L-Glutamic-2,3,3,4,4-d5 acid | 2784-50-1 | 99.8% | 152.16 | 25 MG
L-Glutamic acid-d5 is a deuterium-labeled form of L-Glutamic acid, which functions as an excitatory transmitter and an agonist for various glutamate receptors including metabotropic, kainate, NMDA, and AMPA receptors. It also directly activates the release of dopamine from dopaminergic terminals.
- Deuterium labeled L-Glutamic acid
- Acts as an excitatory transmitter
- Agonist at all subtypes of glutamate receptors (metabotropic, kainate, NMDA, and AMPA)
- Directly activates the release of DA from dopaminergic terminals
- 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 Palmitic acid-2-13C | 287100-87-2 | MFCD00083983 | 98.0% | 10 MG
Palmitic acid-13C is a stable isotope-labeled palmitic acid supplied for use as a tracer or internal standard in analytical and biochemical applications, including GC-MS and LC-MS workflows. It provides a defined isotopic label for metabolic tracing and quantification.
- Used as a tracer and internal standard in GC-MS and LC-MS analyses.
- Stable isotope labeled (13C) fatty acid for metabolic tracing.
- Purity 98.0% as provided.
- CAS number 287100-87-2 for unambiguous identification.
- Provided as a 10 MG package; additional sizes available.
Medchemexpress LLC Pirfenidone-d5 | 1020719-62-3 | MFCD07369537 | 98.9% | 190.25 g/mol | C12H6D5NO | 10 MG
Pirfenidone-d5 is the deuterium-labeled isotopologue of pirfenidone used as an analytical reference and internal standard in quantitative mass spectrometry and pharmacokinetic studies. It provides a chemically similar labeled compound for accurate quantitation of pirfenidone in biological and biochemical assays.
- Deuterium-labeled internal standard for LC-MS/MS assays
- High purity (~98.9%) suitable for analytical use
- Molecular weight 190.25 g/mol; formula C12H6D5NO
- Available as a 10 mg vial for laboratory use
- Suitable for pharmacokinetic and metabolic studies
Medchemexpress LLC Pyridostigmine-d6 bromide | 2375858-08-3 | 100.0% | 267.15 | C9H7D6BrN2O2 | 10 MG
Pyridostigmine-d6 (bromide) is the deuterium-labeled form of pyridostigmine used as a stable-isotope research standard and a reversible cholinesterase inhibitor for biochemical and neuronal signaling studies.
- Deuterium-labeled internal standard suitable for mass spectrometry and quantitative assays.
- High chemical purity (99.96%).
- Molecular weight 267.15; molecular formula C9H7D6BrN2O2.
- CAS number 2375858-08-3 for unambiguous identification.
- Available in small research pack sizes, including a 10 mg vial.
- Storage: store sealed at 4°C; in solvent store at -80°C (6 months) or -20°C (1 month).
Medchemexpress LLC 1,2-distearoyl-sn-glycero-3-phosphocholine-d70 | 56952-01-3 | >99.0% | 860.58 g/mol | C44H18D70NO8P | 1 MG
DSPC-d70 (1,2-distearoyl-sn-glycero-3-phosphocholine-d70) is the deuterium-labeled form of a fully saturated phospholipid used in liposome and lipid nanoparticle research and analytical isotope-labeling studies. The d70 isotopologue replaces hydrogen with deuterium to enable improved detection in mass spectrometry and NMR, and to act as an isotopic tracer in formulation stability and biodistribution experiments.
- Deuterium-labeled phospholipid for isotope tracing and analytical studies.
- Suitable for liposome and lipid nanoparticle formulations.
- High molecular weight and full saturation for stable bilayer formation.
- Useful in mass spectrometry and NMR applications to simplify spectral interpretation.
- Available in small pack sizes for research-scale experiments.
Medchemexpress LLC Etoxazole-d5 | 98.0% | 364.44 g/mol | C21H18D5F2NO2 | 1 MG
Etoxazole-d5 is the deuterium-labeled form of etoxazole intended for use as an isotope-labeled reference in analytical and research applications. It is used as a tracer or internal standard for quantitation and environmental or metabolic studies.
- Isotope-labeled reference standard for analytical quantitation.
- Deuterated (D5) analog of etoxazole.
- Molecular weight: 364.44 g/mol.
- Chemical formula: C21H18D5F2NO2.
- Available in small-quantity packs suitable for standards (e.g., 1 mg).
Cambridge Isotope Laboratories THIOUREA (13C, 99%; 15N2, 98%), 0.5 G, 285977-83-5
THIOUREA (13C, 99%; 15N2, 98%), 0.5 G, 285977-83-5
Cambridge Isotope Laboratories GUANOSINE:H2O (13C10, 98%; 15N5, 96-98%), 10 MG
GUANOSINE:H2O (13C10, 98%; 15N5, 96-98%), 10 MG