Isotopically Labeled Compounds
Medchemexpress LLC D-ribose-d6 | 99.9% | 156.17 g/mol | C5H4D6O5 | 1 MG
D-Ribose-d6 is a deuterium-labeled form of D-ribose used as an isotopic standard and tracer in analytical and biochemical research. It provides a mass-shifted reference for accurate identification and quantitation in MS and NMR studies, and is suitable for metabolic labeling and tracer experiments requiring deuterium enrichment.
- Deuterium-labeled (d6) isotopic standard.
- High purity, suitable for analytical use.
- Molecular weight 156.17 g/mol; formula C5H4D6O5.
- Compatible with mass spectrometry and NMR applications.
- Packaged for small-scale laboratory research.
Medchemexpress LLC L-tyrosine-d2 | 72963-27-0 | MFCD00144690 | 99.8% | 183.20 | C9H9D2NO3 | 10 MG
L-Tyrosine-d2 is the deuterium-labeled form of the amino acid L-tyrosine supplied as a white to off-white solid for analytical and research use. It is intended primarily as a tracer and as an internal standard for quantitative analyses and metabolic studies that require isotopically labeled material. The material is supplied in a 10 mg quantity and has a reported molecular formula C9H9D2NO3 and molecular weight 183.20.
- Deuterium labeled (d2) isotopologue for tracer and standard use.
- Suitable as an internal standard for quantitative NMR, GC-MS, and LC-MS.
- High reported purity (~99.8%) for analytical applications.
- Solid appearance: white to off-white.
- Recommended sealed storage away from moisture and light; in solvent: -80°C up to 6 months, -20°C up to 1 month.
Medchemexpress LLC D-erythro-neopterin-13C5 | 1217632-04-6 | 97.5% | 258.18 g·mol⁻¹ | C9H11N5O4 (13C5) | 1 MG
Neopterin-13C5 is a 13C5 isotopically labeled form of D-erythro-neopterin supplied for research use as an internal standard or tracer in quantitative mass spectrometry and metabolic studies. It is provided as a small, solid quantity suitable for analytical workflows.
- Isotopically labeled (13C5) internal standard for mass spectrometry.
- Suitable as a tracer in metabolic and pharmacokinetic studies.
- Reported high purity (~97.5%).
- Molecular weight 258.18 g·mol⁻¹ for accurate mass calibration.
- Supplied in small milligram quantities for analytical assays.
- For research use only; not for human or therapeutic use.
Cayman Chemical W-MurIcholIc AcId-d4 5mg
An internal standard for the quantification of ω-MCA by GC- or LC-MS
Medchemexpress LLC L-Methionine-DL-sulfoximine (MSX; MSO) | 15985-39-4 | 98.0% | 5 G
L-Methionine-DL-sulfoximine (MSX; MSO) | 15985-39-4 | 98.0% | 5 G
Cayman Chemical ThIacloprId-d4 5mg
An internal standard for the quantification of thiacloprid by GC- or LC-MS
Cayman Chemical Cytosn-d2 50mg
An internal standard for the quantification of cytosine by GC- or LC-MS
Medchemexpress LLC 4-(3-Chloro-4-(3-(cyclopropyl-2,2,3,3-d4)ureido)phenoxy)-7-methoxyquinoline-6-carboxamide-15N | 98.0% | 431.87 | 50 MG
Lenvatinib-15N,d4 is a chemical compound supplied as a white to off-white solid. This product has been tested and complies with the given specifications, showing consistency with its structure as confirmed by 1H NMR Spectrum and LCMS analysis.
- Molecular formula: C₂₁H₁₅D₄ClN₃¹⁵NO₄
- Molecular weight: 431.87
- Appearance: White to off-white solid
- Purity (LCMS): 98.01%
- Consistent with structure by ¹H NMR spectrum and LCMS
- Storage recommendations: -20°C for 3 years, 4°C for 2 years (powder); -80°C for 6 months, -20°C for 1 month (in solvent)
- For research use only
Medchemexpress LLC Benzyl benzoate-d12 | 352431-26-6 | MFCD01317469 | 99.9% | 224.32 g/mol | C14D12O2 | 10 MG
Benzyl benzoate-d12 is a deuterium-labeled benzyl benzoate supplied as a high-purity stable isotope standard for analytical and research applications. It is intended for use as an internal standard in mass spectrometry, tracer studies, and quantitative analyses, and should be stored under recommended refrigerated or frozen conditions for long-term stability.
- High purity (99.85%) suitable for analytical use.
- Deuterium-labeled internal standard for mass spectrometry.
- Molecular weight 224.32 g/mol and formula C14D12O2.
- Supplied as a 10 mg vial for laboratory use.
- Certificate of analysis and safety data sheet available.
Medchemexpress LLC D-Glucose-d4 | 478529-49-6 | 99.0% | 5 MG
D-Glucose-d4 is the deuterium-labeled form of D-Glucose. D-Glucose, a monosaccharide, is a significant carbohydrate in biology, functioning as a carbohydrate sweetener and a crucial component of general metabolism. It also serves as a critical signaling molecule. Stable heavy isotopes of hydrogen, carbon, and other elements, such as deuterium, are incorporated into drug molecules, primarily as tracers for quantitative analysis during drug development. Deuteration is gaining attention due to its potential to influence the pharmacokinetic and metabolic profiles of drugs.
- Utilized as a tracer
- Internal standard for quantitative analysis
- Used in techniques like NMR, GC-MS, or LC-MS
Cayman Chemical AldIcarb SulfoxIde 10mg
A metabolite and degradation product of aldicarb; reduces the number of male T. semipenetrans second-stage larvae that reach the third, fourth, and adult stages of development at 10 μg/ml; inhibits carboxylesterase and cholinesterase in zebrafish (IC50 = 10 μM for both)
![Medchemexpress LLC Sodium [13C]formate | 23102-86-5 | MFCD00064569 | 98.0% | 69.00 | H13CO2Na | 10 MG](https://assets.fishersci.com/TFS-Assets/CCG/product-images/5000208356.png-250.jpg)
Medchemexpress LLC Sodium [13C]formate | 23102-86-5 | MFCD00064569 | 98.0% | 69.00 | H13CO2Na | 10 MG
Formate-13C sodium (sodium [13C]formate) is the 13C-labeled sodium salt of formic acid supplied as a white to off-white solid. It is used as a stable isotope standard and tracer in analytical techniques such as mass spectrometry and nuclear magnetic resonance (NMR).
- 13C-labeled sodium formate for isotope tracing and analytical standards.
- Purity 98.0%.
- CAS number 23102-86-5.
- Molecular weight 69.00 g/mol.
- Supplied in milligram quantities for analytical use.
Medchemexpress LLC Sarcosine-15N | 99.9% | 90.09 g/mol | C3H715NO2 | 5 MG
Sarcosine-15N is the 15N-labeled isotopologue of sarcosine (N-methylglycine), provided as a high-purity analytical standard for metabolomics, isotopic tracing, and quantitative mass spectrometry. The labeled compound enables accurate internal standardization and tracer studies while retaining the chemical behavior of the native analyte.
- High purity suitable for analytical applications.
- Isotopically enriched 15N for tracer and metabolic studies.
- Compatible with mass spectrometry and NMR as an internal standard.
- Supplied in a small quantity appropriate for method development and reference use.
- Stable solid form with standard storage recommendations for labeled amino acids.
Medchemexpress LLC Glycine (2-13C, 15N) | 91795-59-4 | MFCD00064424 | 98.0% | 77.05 | C13CH515NO2 | 100mg
Glycine-2-13C 15N is the 13C- and 15N-labeled Glycine Glycine is an inhibitory neurotransmitter in the CNS and also acts as a co-agonist along with glutamate facilitating an excitatory potential at the glutaminergic N-methyl-D-aspartic acid (NMDA) receptors
Medchemexpress LLC D-ribose-d2 | 478506-32-0 | 98.0% | 152.14 g·mol⁻1 | C5H8D2O5 | 1 MG
Deuterium-labeled D-ribose is a stable isotope reagent used as an analytical standard and tracer in metabolic and biochemical research. Supplied as a powder with defined storage instructions, it supports studies of ATP metabolism, protein glycation, and metabolic pathways while providing reliable isotopic labeling for analytical workflows.
- Deuterium-labeled sugar for isotope tracing.
- High purity: 98.0%.
- Molecular formula C5H8D2O5; molecular weight 152.14 g·mol⁻1.
- Available in multiple pack sizes, including 1 mg.
- Powder storage: -20°C (stable up to 3 years); in solvent: -80°C for 6 months, -20°C for 1 month.