Isotopically Labeled Compounds
Medchemexpress LLC Donepezil-d7 hydrochloride | 1261394-20-0 | 420782 | 99.0% | C24H23D7ClNO3 | 2.5 MG
Donepezil-d7 (hydrochloride) is the deuterium labeled Donepezil. Donepezil (E2020 free base) is a specific and potent AChE inhibitor with IC50s of 8.12 nM and 11.6 nM for bovine AChE and human AChE, respectively. It is for research use only.
- 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 2-HEDTA (2-HYDROXYETHYL-D4, 98%), 0.5 G, 203805-99-6
2-HEDTA (2-HYDROXYETHYL-D4, 98%), 0.5 G, 203805-99-6
Medchemexpress LLC N-acetylisoniazid-d4 | 1330169-81-7 | 183.20 g/mol | C8H5D4N3O2 | 1 MG
Deuterium-labeled acetylisoniazid provided as a research-grade reference standard for analytical and metabolic investigations. Intended for use as an internal standard in mass spectrometry, tracer experiments, and method development. Purity and recommended storage conditions are supplied in the Certificate of Analysis.
Cambridge Isotope Laboratories CHLOROMETHANE-D3 (D, 99%), 1 L, 1111-89-3
CHLOROMETHANE-D3 (D, 99%), 1 L, 1111-89-3. **This item is shipped in a Code M lecture bottle. The fee for the bottle will need added to the order as a separate charge. Please include part# NC1539013 to the order.
Medchemexpress LLC Methanol-d1 | 1455-13-6 | MFCD00044213 | ≥99.0% | 33.048 g/mol | CH3OD | 100 G
Methanol-d1 (CH3OD) is deuterium-labeled methanol intended for use as a tracer and as an internal standard in NMR, GC-MS, and LC-MS quantitative analyses. The reagent is provided with high isotopic and chemical purity and is suitable for routine analytical workflows.
- High isotopic purity (≥99.0%) for accurate quantitative analysis.
- Compatible with NMR, GC-MS, and LC-MS methodologies.
- Available in multiple laboratory sizes, including 100 g.
- Formula CH3OD enables straightforward solvent substitution in protocols.
- Stable under recommended storage conditions with extended shelf life.
Cambridge Isotope Laboratories POTASSIUM CYANIDE (13C, 99%; 15N, 98%+), 1 G, 74889-51-3
POTASSIUM CYANIDE (13C, 99%; 15N, 98%+), 1 G, 74889-51-3
Cayman Chemical rac-Aprepitant-d4, Purity: ≥99% deuterated forms (d1-d4), CAS: 2748471-42-1, 1 mg
An internal standard for the quantification of aprepitant by GC- or LC-MS
Cambridge Isotope Laboratories 1,1,2,2-Tetrachloroethane-D2 (D, 99.6%), 5 G, 33685-54-0
1,1,2,2-Tetrachloroethane-D2 (D, 99.6%), 5 G, 33685-54-0
Medchemexpress LLC D-alanine-d7 | 2483831-62-3 | MFCD06658912 | 99.0% | 96.14 | C3D7NO2 | 10 MG
D-Alanine-d7 is a deuterium-labeled form of D-alanine used as an internal standard and tracer for quantitative analysis by NMR, GC-MS, and LC-MS. It is reported as a weak agonist of the inhibitory glycine receptor (GlyR) and PMBA, with an EC50 of 9 mM for GlyR.
- Deuterium-labeled internal standard for NMR, GC-MS, and LC-MS.
- Reported weak GlyR and PMBA agonist (EC50 9 mM for GlyR).
- High isotopic purity: 99.0%.
- Molecular formula C3D7NO2; molecular weight 96.14.
- Available in small pack sizes (e.g., 10 mg) as a solid powder.
- Storage: powder -20°C (3 years) or 4°C (2 years); in solvent -80°C (6 months) or -20°C (1 month).
Cambridge Isotope Laboratories URIC ACID (1,3-15N2, 98%+), 0.1 G, 62948-75-8
URIC ACID (1,3-15N2, 98%+), 0.1 G, 62948-75-8
Cambridge Isotope Laboratories DL-COTININE (METHYL-D3, 98%), 0.1 G, 110952-70-0
DL-COTININE (METHYL-D3, 98%), 0.1 G, 110952-70-0
Medchemexpress LLC Pimozide-d4-1 | 00-00-0 | 98.0% | C28H25D4F2N3O | 10MG
Pimozide-d4-1 is the deuterium-labeled isotopologue of pimozide designed for use as an analytical tracer and internal standard in quantitative mass spectrometry and NMR methods. With four deuterium substitutions, the compound provides a distinct mass difference from the parent analyte to support accurate, interference-resistant measurement in bioanalytical and method-development workflows.
- Enables accurate quantitation as an internal standard for LC-MS, GC-MS, or NMR.
- Four deuterium labels provide a clear mass shift from the unlabeled analyte.
- High purity supports reproducible analytical performance.
- Suitable for method development and validation workflows.
- Available in laboratory-scale pack sizes for routine use.
- Supplied with documentation for analytical applications.
Medchemexpress LLC Methyl nicotinate-d4 | 345909-99-1 | MFCD01074082 | 99.5% | 141.16 g·mol-1 | C7H3D4NO2 | 10 MG
Methyl nicotinate-d4 is a deuterium-labeled analogue of methyl nicotinate supplied for research and analytical applications. It is provided as a high-purity solid intended for use as a tracer or internal standard in mass spectrometry and quantitative assays.
- High isotopic enrichment and reported purity of 99.5%.
- Molecular formula C7H3D4NO2; molecular weight ~141.16 g·mol-1.
- Available in small mass pack sizes tailored for analytical workflows.
- Solid appearance with recommended cold storage to maintain stability.
- Intended for research use and analytical applications.
Medchemexpress LLC Pristane-d40 | 16416-35-6 | 10 MG
Pristane-d40 is the deuterium labeled Pristane, a naturally occurring hydrocarbon oil. It is found in small quantities in many plants, various marine organisms, and as the most active component of mineral oil. This product is a non-antigenic adjuvant that induces MHC class II-restricted, arthritogenic T cells in rats.
- 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 D-GALACTOSE (1-13C, 99%), 0.5 G, 70849-30-8
D-GALACTOSE (1-13C, 99%), 0.5 G, 70849-30-8