Isotopically Labeled Compounds
Medchemexpress LLC L-Ascorbic acid-13C | 178101-88-7 | 99.9% | 1 MG
L-Ascorbic acid-13C is the 13C-labeled L-Ascorbic acid, an electron donor, and an endogenous antioxidant agent. It selectively inhibits Cav3.2 channels, enhances collagen deposition, and inhibits elastogenesis. This compound also exhibits anti-cancer effects by generating reactive oxygen species (ROS) and selectively damaging cancer cells.
- Can be used as a tracer.
- Can be used as an internal standard for quantitative analysis by NMR, GC-MS, or LC-MS.
- Incorporates stable heavy isotopes for quantitation during drug development.
- Selectively inhibits Cav3.2 channels with an IC50 of 6.5 μM.
- Enhances collagen deposition and inhibits elastogenesis.
Medchemexpress LLC Citric acid-13C2 | 224054-26-6 | 194.11 | 5 MG
Citric acid-13C2 is the 13C-labeled Citric acid (HY-N1428). Citric acid acts as a natural preservative and food tartness enhancer. It induces apoptosis and cell cycle arrest at G2/M phase and S phase in HaCaT cells. It can also cause oxidative damage of the liver by decreasing antioxidative enzyme activities. Citric acid is utilized as an acidulant, emulsifier, sequestrant, and buffering agent across various industries. It is for research use only and not sold 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 Choline-d13 (chloride) | 352438-97-2 | MFCD01074298 | 99.9% | 152.70 g/mol | C5HD13ClNO | 10 MG
Choline-d13 chloride is the deuterium-labeled analog of choline chloride supplied for laboratory research use as a stable isotope tracer and analytical internal standard. It is provided as a research-grade, high-purity solid with supporting documentation for safe laboratory handling.
- Deuterium-labeled choline chloride suitable for tracer and analytical applications.
- High isotopic/purity level reported at 99.9%.
- Molecular weight approximately 152.70 g/mol, CAS number 352438-97-2.
- Available in small, research-sized quantities (10 MG vial option).
- Manufacturer data sheet and SDS available for handling and safety information.
Medchemexpress LLC D-ribose-d6 | 99.9% | 156.17 g/mol | C5H4D6O5 | 10 MG
D-Ribose-d6 is the deuterium-labeled analogue of D-ribose used as an isotope-labeled standard and tracer in biochemical and analytical studies. It facilitates mass spectrometry and NMR analysis of carbohydrate metabolism and energy-related pathways.
- Deuterium-labeled tracer for mass spectrometry and NMR.
- High isotopic enrichment suitable for quantitative analyses.
- High chemical purity for analytical applications.
- Supplied as a dry powder for easy handling and storage.
- Useful as an internal standard or tracer in metabolic studies.
Medchemexpress LLC Stearic acid-d3 | 62163-39-7 | MFCD00145327 | 99.9% | 287.50 g/mol | C18H33D3O2 | 10 MG
Stearic acid-d3 is the deuterium-labeled form of stearic acid, a long-chain saturated fatty acid commonly found in animal and vegetable fats and oils. It is supplied as a high-purity labeled standard for research and analytical applications, and is intended for use as a tracer and internal standard in quantitative analytical methods such as NMR, GC-MS, and LC-MS.
- Deuterium-labeled internal standard for quantitative analysis.
- High purity: 99.9%.
- Molecular weight: 287.50 g/mol.
- Chemical formula: C18H33D3O2.
- Available in small pack sizes suitable for analytical workflows.
Cambridge Isotope Laboratories p-Coumaric acid (propyl-13C3 99%) CP 99% 1 mg
p-Coumaric acid (propyl-13C3 99%) CP 99% 1 mg
Medchemexpress LLC Oseltamivir-d5 phosphate | 415.43 | C16H26D5N2O8P | 1 MG
Oseltamivir-d5 phosphate is a deuterium-labeled analogue of oseltamivir phosphate used as a stable isotope internal standard and tracer for quantitative analysis in biological and chemical assays. It is intended for research use only and is commonly used in LC-MS, GC-MS, and NMR workflows for accurate quantitation.
- Deuterium-labeled internal standard for oseltamivir analyses.
- Enables accurate quantitative analysis by LC-MS, GC-MS, and NMR.
- Formula C16H26D5N2O8P; molecular weight 415.43 g/mol.
- Supplied in small analytical quantities suitable for trace-level studies.
- Intended for research use only; not for human or veterinary use.
Cambridge Isotope Laboratories EFSA-8 13C PAH Standard Mixture (13C 99%) in nonane 1 2 mL
EFSA-8 13C PAH Standard Mixture (13C 99%) in nonane 1 2 mL
Medchemexpress LLC 1,1-Dimethylurea-d6 | 1219802-32-0 | 99.6% | 94.15 | C3H2D6N2O | 5 MG
1,1-Dimethylurea-d6 is the deuterium-labeled isotopologue of 1,1-dimethylurea used as a tracer or internal standard in analytical chemistry and mass spectrometry. It is supplied as a white to off-white solid in small research-scale quantities.
- Purity 99.6% (HPLC)
- Molecular weight 94.15 g/mol
- Chemical formula C3H2D6N2O
- Appearance white to off-white solid
- Available in 1 mg, 5 mg, and 10 mg pack sizes
- Used as tracer and internal standard in analytical methods