Isotopically Labeled Compounds
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 Lauric acid-d23 | 59154-43-7 | MFCD00144567 | 98.4% | 223.46 | C12HD23O2 | 50mg
Lauric acid-d233 is the deuterium labeled Lauric acid Lauric acid is a middle chain-free fatty acid with strong bactericidal properties The EC50s for P acnes S aureus S epidermidis are 2 6 4 g/mL respectively
Medchemexpress LLC Spisulosine-d3 (ES-285-d3) | 1246298-31-6 | 99.0% | 288.53 | 1 MG
Spisulosine-d3 (ES-285-d3) is a deuterium-labeled version of Spisulosine, an antiproliferative compound derived from marine sources. It inhibits the growth of prostate PC-3 and LNCaP cells by causing intracellular ceramide accumulation, activating PKCζ, and inducing apoptosis. Deuteration can impact 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
- Can affect pharmacokinetic and metabolic profiles of drugs
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).
Medchemexpress LLC D-leucine-d10 | 271247-12-2 | MFCD01321412 | 99.8% | 141.23 | C6H3D10NO2 | 10mg
D-Leucine-d10 is the deuterium labeled D-Leucine D-Leucine is a more potent anti-seizure agent than L-leucine D-leucine potently terminates seizures even after the onset of seizure activity D-leucine but not L-leucine reduces long-term potentiation but had no effect on basal synaptic transmission in vitro[1]
Revvity Health Sciences Inc Iodine-125 Radionuclide, 2mCi, Specific Activity: ~17Ci/mg, 0.1M NaOH (pH 12-14), Concentration: >350mCi/mL
Iodine-125 Radionuclide, 2mCi, Specific Activity: ~17Ci/mg, 0.1M NaOH (pH 12-14), Concentration: >350mCi/mL
Medchemexpress LLC Enclomiphene-d4 | 00-00-0 | 99.9% | 409.98 g/mol | C26H24D4ClNO | 5 MG
Enclomiphene-d4 is a deuterium-labeled analogue of enclomiphene provided for use as a tracer and internal standard in quantitative analytical workflows. It is intended for research applications where stable-isotope labeling improves accuracy and precision in NMR, GC-MS, and LC-MS assays.
- Deuterium-labeled internal standard for quantitative analysis by NMR, GC-MS, and LC-MS.
- High purity: 99.85%.
- Molecular formula C26H24D4ClNO and molecular weight 409.98 g/mol.
- Available in small research quantities suitable for analytical workflows.
- Includes supporting documentation such as COA, HNMR, RP-HPLC, and LCMS reports.
Cayman Chemical Darifenacin-d4, Purity: ≥99% deuterated forms (d1-d4), CAS: 1189701-43-6, 10 mg
An internal standard for the quantification of darifenacin by GC- or LC-MS
Medchemexpress LLC Istradefylline-13C,d3 | 2749234-46-4 | 98.3% | 388.44 | 10 MG
Istradefylline-13C,d3 is the 13C- and deuterium labeled version of Istradefylline, a highly potent, selective, and orally active adenosine A2A receptor antagonist with a Ki of 2.2 nM. It has been studied in experimental models of Parkinson's disease. This compound is intended for research use only and can be used for quantitative analysis.
- 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 Pentoxifylline-d6 | 1185878-98-1 | 99.0% | 284.34 g/mol | C13H12D6N4O3 | 10 MG
Pentoxifylline-d6 is the deuterium-labeled analog of pentoxifylline provided as a research standard for analytical and tracer studies. It is intended for use as an internal standard in mass spectrometry, quantitative analysis, and pharmacokinetic or metabolic research; for laboratory research use only.
- Deuterium-labeled (d6) internal standard for mass spectrometry.
- High purity: 99.0%.
- Molecular formula C13H12D6N4O3; molecular weight 284.34 g/mol.
- CAS number 1185878-98-1 for unambiguous identification.
- Appearance: white to off-white solid suitable for analytical handling.
- Available as a 10 mg research quantity.
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 Propofol-d17 β-D-glucuronide | 1683581-05-6 | 98.0% | 371.50 g/mol | C18H9D17O7 | 1 MG
Propofol-d17 β-D-glucuronide is a deuterium-labeled internal standard of propofol β-D-glucuronide suitable for use as a tracer or quantitative reference in NMR, GC-MS, and LC-MS analyses. It is supplied as a high-purity isotopologue for metabolite quantitation and method development.
- Deuterium-labeled propofol β-D-glucuronide for use as an internal standard
- High purity: 98.0%
- Available in small quantities including 1 mg
- Soluble in ethanol, DMF, and DMSO at ≥ 30 mg/mL
- Powder: store at -20°C; in solvent: -80°C (6 months) or -20°C (1 month)
- Suitable for NMR, GC-MS, and LC-MS quantitative analysis
Medchemexpress LLC Trametinib-d4 | 871700-17-3 | 99.9% | 619.42 | 1 MG
Trametinib-d4 is the deuterium labeled Trametinib. Trametinib is an orally active MEK inhibitor that inhibits MEK1 and MEK2 with IC50s of about 2 nM. It activates autophagy and induces apoptosis.
- 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 of hydrogen, carbon, and other elements have been incorporated into drug molecules for quantitation.
- Deuteration can affect the pharmacokinetic and metabolic profiles of drugs.
Medchemexpress LLC DL-Tryptophan-d3 | 340257-61-6 | 99.3% | 207.24 | 50 MG
DL-Tryptophan-d3 is the deuterium labeled DL-Tryptophan. DL-Tryptophan is an endogenous metabolite.
- This compound can be used as a tracer.
- This compound can be used as an internal standard for quantitative analysis by NMR, GC-MS, or LC-MS.