Isotopically Labeled Compounds
Medchemexpress LLC Riboflavin-d3 | 83-88-5 | 99.9% | 1 MG
Riboflavin-d3 is a deuterium-labeled form of Riboflavin (Vitamin B2). Riboflavin is an easily absorbed micronutrient essential for maintaining health in humans and other animals. This compound is intended for research use only and can be utilized as a tracer or an internal standard for quantitative analysis. Deuterium substitution has been noted for its potential impact on the pharmacokinetic and metabolic profiles of drugs.
Medchemexpress LLC Colchicine-d3 | 1217625-62-1 | 99.2% | 402.46 | 5 MG
Colchicine-d3 is the deuterium labeled Colchicine. Colchicine is a tubulin inhibitor and a microtubule disrupting agent. It inhibits microtubule polymerization with an IC50 of 3 nM and is a competitive antagonist of the α3 glycine receptors (GlyRs). 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
Medchemexpress LLC Isonicotinamide-d4 | 1219799-40-2 | 99.9% | 126.15 | 50 MG
Isonicotinamide-d4 is the deuterium labeled Isonicotinamide. It is intended for research use only and not for sale to patients. Stable heavy isotopes like deuterium have been incorporated into drug molecules for use as tracers in drug development, and deuteration has shown potential to influence the pharmacokinetic and metabolic profiles of drugs.
- Can be used as a tracer.
- Can be used as an internal standard for quantitative analysis using techniques such as NMR, GC-MS, or LC-MS.
Medchemexpress LLC Tiaprofenic acid-d3 | 2740831-64-3 | 96.3% | 263.33 g/mol | C14H9D3O3S | 1 MG
Tiaprofenic acid-d3 is a deuterium-labeled analogue of the nonsteroidal anti-inflammatory compound tiaprofenic acid, provided for research use only. It serves as an isotopically labeled internal standard for analytical workflows and supports studies of drug metabolism, pharmacokinetics, and quantitative bioanalysis.
- Deuterium-labeled analogue for isotopic tracing.
- Suitable as an internal standard for LC-MS/MS assays.
- Supports drug metabolism and pharmacokinetic studies.
- High purity for analytical applications (96.3% reported).
- Supplied in small mg quantities for laboratory research.
Medchemexpress LLC 9-octadecenoic acid (9z)-, 2,3-dihydroxypropyl-1,1,2,3,3-d5 ester | 565183-24-6 | 99.9% | 10 MG
Monoolein-d5 is a deuterium labeled monoolein with high purity, making it suitable for research applications requiring isotopic labeling. Its structure has been confirmed by 1H NMR and mass spectrometry.
- Purity of 99.9% (HPLC)
- Isotopic enrichment of 99.9%
- Structure confirmed by 1H NMR and MS
- Store at 4°C, sealed, away from moisture and light
- Store in solvent at -80°C for 6 months or -20°C for 1 month
Medchemexpress LLC Nizatidine-d3 | 1246833-99-7 | MFCD32641299 | 98.8% | 334.48 | C12H18D3N5O2S2 | 10 MG
Nizatidine-d3 is the deuterium-labeled form of nizatidine supplied as an isotope-labeled reference standard for research applications, including mass spectrometry, pharmacokinetic, and metabolic studies. It is intended for use as a labeled internal standard to support quantitative analytical workflows.
- Deuterium-labeled internal standard for mass spectrometry assays.
- High chemical purity: 98.8%.
- CAS number 1246833-99-7 for unambiguous identification.
- Available in small-mass packaged quantities suitable for analytical use.
- Useful for ADME, PK/PD, and quantitative analytical studies.
Medchemexpress LLC D-(+)-Talose-13C-1 | 83379-36-6 | 99.0% | 181.15 g·mol⁻1 | C6H12O6 | 25 MG
D-(+)-Talose-13C-1 is the carbon-1 13C-labeled isotopologue of D-talose, supplied as a high-purity solid for use as a tracer and as an internal standard in analytical methods such as NMR, GC-MS, and LC-MS.
- Labeled at carbon-1 with 13C for tracer studies.
- Suitable as an internal standard for NMR, GC-MS, and LC-MS.
- High purity: 99.0%.
- Pack size appropriate for analytical applications.
- Molecular formula C6H12O6; molecular weight 181.15 g·mol⁻1.
- CAS number 83379-36-6 for unambiguous identification.
Medchemexpress LLC Flurbiprofen-d3 (dl-flurbiprofen-d3) | 1185133-81-6 | MFCD09840635 | 99.9% | 247.28 | C15H10D3FO2 | 5 MG
Flurbiprofen-d3 is the deuterium-labeled analogue of flurbiprofen supplied as a research-grade analytical standard for quantitative assays and mass spectrometry internal standardization. Provided in a small 5 mg quantity, it offers high chemical purity and isotopic enrichment suitable for accurate quantitation in bioanalytical workflows.
- Chemical formula C15H10D3FO2
- Molecular weight 247.28
- Chemical purity 99.9% (LCMS)
- Isotopic enrichment 98.2%
- Suitable as an internal standard for mass spectrometry
- Provided as a solid 5 mg quantity for analytical use
Medchemexpress LLC Glycocyamine-15N,13C2 | 2483829-93-0 | 97.4% | 120.09 | C13C2H7N215NO2 | 5 MG
Glycocyamine-15N,13C2 is an isotopically labeled form of glycocyamine (guanidinoacetic acid) intended for use as a stable-isotope tracer and reference standard in analytical and biochemical research. Supplied as a powder for preparation of standard solutions and experimental assays; for research use only.
- Isotopically labeled with 15N and 13C for tracer and quantification studies.
- High purity (97.4%) suitable for analytical applications.
- Supplied as a powder for easy dissolution and preparation of standards.
- Compatible with mass spectrometry and NMR workflows.
- Stable when stored under recommended conditions for long-term use.
Cayman Chemical DIdnosIn-d2 1mg
An internal standard for the quantification of didanosine by GC- or LC-MS
Medchemexpress LLC Bis-Tris-d19 | 352534-93-1 | 99% | 100 MG
Bis-Tris-d19 is the deuterium labeled Bis-Tris. Bis-Tris is a commonly used buffer. Stable heavy isotopes of hydrogen, carbon, and other elements have been incorporated into drug molecules, largely as tracers for quantitation during the drug development process. Deuteration has gained attention because of its potential to affect the pharmacokinetic and metabolic profiles of drugs.
- 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 Alogliptin-13C,d3 benzoate | 1246817-18-4 | 98.8% | 1 MG
Alogliptin-13C,d3 benzoate is a stable isotope-labeled compound, primarily used as a tracer or an internal standard for quantitative analysis using techniques like NMR, GC-MS, or LC-MS. It is a PEG-based PROTAC linker that can be utilized in the synthesis of PROTACs, which are molecules designed to exploit the intracellular ubiquitin-proteasome system for selective degradation of target proteins.
- Application as a tracer: Can be used in studies to track metabolic pathways or drug distribution.
- Internal standard for quantitative analysis: Ideal for precise measurement in analytical methods such as NMR, GC-MS, or LC-MS due to its isotope labeling.
- PROTAC linker: Serves as a linker in the construction of PROTACs, which are bifunctional molecules that induce targeted protein degradation.
- Research use only: This product is intended for research and development purposes and not for sale to patients.
Medchemexpress LLC D-Fructose-d-1 | 57-48-7 | 5 MG
D-Fructose-d-1 is a deuterium-labeled form of D-Fructose, a naturally occurring monosaccharide found in various plants. Deuterium substitution has gained attention due to its potential to affect the pharmacokinetic and metabolic profiles of drugs. This compound is intended for research use only.
- Used as a tracer.
- Serves as an internal standard for quantitative analysis by NMR, GC-MS, or LC-MS.
- Purity is 98.0%.
- Molecular weight is 181.16.
- Chemical formula is C6H11DO6.
- Appears as a white to off-white solid.
- Soluble in H2O at ≥ 100 mg/mL.
Medchemexpress LLC Budesonide-d8 | 1105542-94-6 | MFCD07369194 | 97.6% | 438.58 g/mol | C25H26D8O6 | 5 MG
Budesonide-d8 is the deuterium-labeled analog of budesonide intended for use as an internal standard and reference material in bioanalytical and pharmacokinetic studies. Its mass-shifted isotopic composition allows specific detection and accurate quantitation by mass spectrometry while closely matching the chemical behavior of the unlabeled analyte.
- Deuterium-labeled internal standard for LC-MS/MS assays.
- Enables accurate quantitation and reliable peak identification.
- Suitable for pharmacokinetic, metabolic, and bioanalytical studies.
- High purity for analytical reproducibility (approximately 97.6%).
- Provided in small-mass formats for method development and validation.
Medchemexpress LLC Diethylamine-d10hydr 25mg
Diethylamine-d10 hydrobromide is the deuterium labeled Diethylamine hydrobromide[1]