Isotopically Labeled Compounds
Cambridge Isotope Laboratories L-GLUTAMINE (ALPHA-15N, 98%), 0.1 G, 80143-57-3
L-GLUTAMINE (ALPHA-15N, 98%), 0.1 G, 80143-57-3
Medchemexpress LLC Febuxostat-d9 | 1246819-50-0 | MFCD21363615 | 98.7% | 325.43 g·mol⁻¹ | C16H7D9N2O3S | 5 MG
Febuxostat-d9 is a deuterium-labeled analogue of febuxostat intended for analytical and research use as an internal standard in LC-MS and GC-MS assays. It retains the xanthine oxidase inhibitory profile (reported Ki ≈ 0.6 nM) and is supplied as a purified, isotopically labeled reference material for quantitation, tracer studies, and pharmacokinetic analyses.
- Deuterium-labeled internal standard for LC/GC-MS quantification.
- High isotopic enrichment (d9) for clear mass separation.
- High purity (98.7%) suitable for analytical use.
- Molecular weight 325.43 g·mol⁻¹ and formula C16H7D9N2O3S.
- Provided as a 5 mg solid for laboratory assays.
- CAS 1246819-50-0 for unambiguous identification.
Medchemexpress LLC Sildenafil-d3N-1 | 1126745-87-6 | C22H27D3N6O4S | 5 MG
Sildenafil-d3-1 is a deuterium-labeled Sildenafil-d3. It is a potent phosphodiesterase type 5 (PDE5) inhibitor with an IC50 of 5.22 nM. This compound has a molecular weight of 477.59, appears as a white to off-white solid, and has a purity of 99.47%. It is intended for research use only and not for sale to patients.
- 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 Docosanoic acid-d3 (Behenic acid-d3) | 1193721-67-3 | HY-W013049S3 | 99.8% | 343.60 | 25 MG
Docosanoic acid-d3 (Behenic acid-d3) is the deuterium-labeled Docosanoic acid. It is a long-chain saturated fatty acid that inhibits the double-stranded DNA (dsDNA) binding activity of p53 DNA binding domain. Docosanoic acid has low bioavailability and can increase cholesterol in humans.
- Can be used as a tracer
- Can be used as an internal standard for quantitative analysis by NMR, GC-MS, or LC-MS
- Stable heavy isotopes have potential to affect pharmacokinetic and metabolic profiles of drugs
Medchemexpress LLC Ethyl palmitate-d31 | 1215721-57-5 | 100 MG
Ethyl palmitate-d31 is the deuterium labeled Ethyl palmitate. Ethyl palmitate, a fatty acid ethyl ester (FAEE), shows a marked preference for the synthesis of ethyl palmitate and ethyl oleate over other FAEEs in human subjects after ethanol consumption. Ethyl palmitate is used as a hair- and skin-conditioning agent.
- 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 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 Acenaphthylene (13C6 99%) 100 ug/mL in nonane 1 2 mL
Acenaphthylene (13C6 99%) 100 ug/mL in nonane 1 2 mL
Cambridge Isotope Laboratories Chlortoluron (N N-dimethyl-D6 98%) 0 01 g
Chlortoluron (N N-dimethyl-D6 98%) 0 01 g
Medchemexpress LLC D-Glucose-13C2 | 201741-04-0 | 98.0% | 100 MG
D-Glucose-13C2 is the 13C labeled D-Glucose, a critical monosaccharide for general metabolism and a signaling molecule related to cellular metabolic status and stress response. This compound can be used as a tracer or an internal standard for quantitative analysis.
- Used as a tracer
- Used as an internal standard for quantitative analysis by NMR, GC-MS, or LC-MS
Cambridge Isotope Laboratories Modified JIS PCB Cleanup Spike (13C12 99%) 1 2 mL
Modified JIS PCB Cleanup Spike (13C12 99%) 1 2 mL
Medchemexpress LLC Quinolinic acid-d3 | 138946-42-6 | MFCD13189065 | 99.9% | 170.14 g/mol | C7H2D3NO4 | 1 MG
Quinolinic acid-d3 is the deuterium-labeled isotopologue of quinolinic acid intended for analytical and research use as a tracer and internal standard. It acts as an NMDA receptor agonist analog and is formulated for accurate quantitative analysis in spectroscopy and mass spectrometry workflows.
- High isotopic labeling suitable for tracer and internal standard applications.
- High purity (99.9%) for reliable quantitative results.
- Molecular weight ~170.14 g/mol supporting precise mass calibration.
- Soluble in DMSO and water with ultrasonic assistance for flexible sample prep.
- Compatible with NMR, GC-MS, and LC-MS quantitative workflows.