Isotopically Labeled Compounds
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
Cambridge Isotope Laboratories METHYLAMINE:HCL (13C, 99%), 1 G, 60656-93-1
METHYLAMINE:HCL (13C, 99%), 1 G, 60656-93-1
Medchemexpress LLC Ribociclib-d6 hydrochloride | 1211443-80-9 | 98.3% | 477.04 g/mol | C23H25D6ClN8O | 10 MG
Ribociclib-d6 hydrochloride is the deuterium-labeled hydrochloride salt of ribociclib, provided as a solid reference standard for analytical, pharmacokinetic, and bioanalytical research requiring isotopically labeled material.
- Deuterium-labeled internal standard for quantitative mass spectrometry
- High purity (~98.3%) suitable for analytical reference use
- Solid form, light yellow to light brown in appearance
- Storage recommendations: 4°C sealed; in solvent: -80°C (6 months), -20°C (1 month)
- Appropriate for pharmacokinetic, metabolic, and method development studies
Apexbio Technology LLC Nortriptyline (hydrochloride) 894-71-3 50mg
Nortriptyline hydrochloride (CAS 894-71-3) is a dibenzocycloheptene-derived tricyclic antidepressant that inhibits monoamine reuptake transporters It selectively blocks the norepinephrine transporter (NET) with a Ki of 3 4 nM and inhibits the serotonin transporter (SERT) with a Ki of 161 nM thereby increasing synaptic concentrations of these neurotransmitters in the central nervous system In vitro nortriptyline dose-dependently suppresses spontaneous migration and chemotaxis of human polymorphonuclear cells In vivo studies in rodents indicate partial blockade of noradrenaline depletion in nerve terminals at higher doses Nortriptyline is frequently employed in research on monoaminergic neurotransmission and antidepressant pharmacology
Cambridge Isotope Laboratories L-PROLINE (13C5, 99%; 15N, 99%), 0.5 G, 202407-23-6
L-PROLINE (13C5, 99%; 15N, 99%), 0.5 G, 202407-23-6
Cambridge Isotope Laboratories COENZYME Q10 (UBIQUINONE) (DIMETHOXY-D6, METHYL-D3, 98%), 5 MG
COENZYME Q10 (UBIQUINONE) (DIMETHOXY-D6, METHYL-D3, 98%), 5 MG
Cambridge Isotope Laboratories L-LYSINE:2HCL (1-13C, 99%), 0.25 G
L-LYSINE:2HCL (1-13C, 99%), 0.25 G
Medchemexpress LLC Tetracosanoic-12,12,13,13-d4 acid | 1219794-59-8 | 99.8% | 50MG
Tetracosanoic-12,12,13,13-d4 acid | 1219794-59-8 | 99.8% | 50MG