Isotopically Labeled Compounds
Medchemexpress LLC Lactyl-CoA | 1926-57-4 | 98.01% | C24H40N7O18P3S | 25 MG
Lactyl-CoA is an acyl-CoA formed by the condensation of the sulfhydryl group of CoA and the carboxyl group of lactic acid. It is crucial for the biosynthesis of biodegradable and biocompatible lactic acid-based copolymers. GTPSCS can also function as Lactyl-CoA synthetase, converting lactic acid into Lactyl-CoA to provide substrate for histone lactation.
Medchemexpress LLC Donepezil-d5 | 1128086-25-8 | 99.3% | C24H24D5NO3 | 1 MG
Donepezil-d5 is a deuterium-labeled version of Donepezil, a potent and specific AChE inhibitor. It has IC50 values of 8.12 nM for bovine AChE and 11.6 nM for human AChE. Deuteration, the incorporation of stable heavy isotopes into drug molecules, is used as a tracer during drug development and can influence 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 Fmoc-leucine-d3 | 538372-74-6 | 99.3% | 356.43 | C21H20D3NO4 | 25 MG
Fmoc-leucine-d3 is a deuterium-labeled N-Fmoc protected leucine used as a tracer and internal standard for quantitative analysis in analytical workflows. It is intended for research use in biochemical and pharmacological studies, including investigations of metabolic pathways and nuclear receptor modulation.
- Deuterium-labeled amino acid suitable as tracer or internal standard.
- High purity suitable for analytical applications.
- Compatible with NMR, GC-MS, and LC-MS quantitation.
- Available in small milligram pack sizes for research use.
- Useful for metabolic and receptor modulation studies.
Medchemexpress LLC Nilutamide-d6 | 1189477-66-4 | 99.8% | C12H4D6F3N3O4 | 10MG
Nilutamide-d6 is the deuterium-labeled analogue of nilutamide supplied as a solid research reagent and analytical internal standard for use in ADME, mass spectrometry, and pharmacokinetic studies. It is intended for research use only.
- Deuterium-labeled internal standard for mass spectrometry quantitation.
- High chemical purity for reliable analytical results.
- Suitable for ADME and pharmacokinetic studies.
- Solid powder form enables straightforward sample preparation.
- Stable when stored sealed at 4°C, protected from moisture and light.
Medchemexpress LLC Trazodone-d6 (hydrochloride) | 1181578-71-1 | 99.6% | 1 MG
Trazodone-d6 (hydrochloride) is the deuterium labeled Trazodone hydrochloride.
- 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 AMMONIUM DEUTEROXIDE-D5 (D, 99%) (~25% SOL. IN D2O), 100 G OF S, 12168-30-8
AMMONIUM DEUTEROXIDE-D5 (D, 99%) (~25% SOL. IN D2O), 100 G OF S, 12168-30-8
Cambridge Isotope Laboratories 2 4 5-Tribromophenol (unlabeled) 100 ug/mL in toluene 1 2 mL
2 4 5-Tribromophenol (unlabeled) 100 ug/mL in toluene 1 2 mL
Medchemexpress LLC 2-Iodoacetamide-d4 | 1219802-64-8 | 98.7% | 188.99 | 1 MG
2-Iodoacetamide-d4 is the deuterium labeled 2-Iodoacetamide. 2-Iodoacetamide (Iodoacetamide) is an alkylating agent commonly used for alkylation of cysteine during sample preparation for proteomics. It is for research use only and not sold to patients. Stable heavy isotopes of hydrogen, carbon, and other elements are incorporated into drug molecules, primarily as tracers for quantitation during drug development. Deuteration can impact 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.
Cambridge Isotope Laboratories Ursodeoxycholic acid (24-13C 99%) 0 05 g
Ursodeoxycholic acid (24-13C 99%) 0 05 g
Cayman Chemical Chlorzoxazon-d3 500ug
An internal standard for the quantification of chlorzoxazone by GC- or LC-MS
Medchemexpress LLC C18-ceramide-d7 | 1840942-14-4 | 99.0% | 573.00 | C36H64D7NO3 | 500 UG
C18-ceramide-d7 is a deuterium-labeled analogue of C18-ceramide used as a tracer and internal standard in lipid analysis and mass spectrometry. Supplied as a solution at 1.75 mM in methanol:chloroform (10:90), the material is intended for research use only and should be stored at -20°C.
- Isotopically labeled internal standard (d7) for quantitative lipidomics
- High purity: 99.0%
- Molecular weight: 573.00
- Chemical formula: C36H64D7NO3
- Pack size: 500 μg, 1.75 mM in 500 μL
- Storage: store at -20°C
Cayman Chemical Decanoic Acid-d2, Purity: ≥99% deuterated forms (d1-d2), CAS: 62716-49-8, 50 mg
An internal standard for the quantification of decanoic acid by GC- or LC-MS
Medchemexpress LLC L-ornithine-d2 hydrochloride | 2483831-42-9 | 99.9% | 170.63 | C5H11D2ClN2O2 | 50 MG
L-Ornithine-d2 hydrochloride is a deuterium-labeled analog of L-ornithine hydrochloride supplied as a white to off-white solid for research use. It is used as a stable isotope tracer or internal standard in quantitative analyses by NMR, GC-MS, and LC-MS and is useful in metabolic and biochemical studies involving the urea cycle and nitrogen disposal.
- Deuterium-labeled tracer for quantitative mass spectrometry and NMR.
- High purity (approximately 99.9%) suitable for analytical standards.
- Molecular formula C5H11D2ClN2O2 and molecular weight 170.63.
- Available in multiple pack sizes to support method development and scale-up.
- Solid form with recommended sealed storage away from moisture and light; solvent storage at -80°C (6 months) or -20°C (1 month).
Medchemexpress LLC 1-bromooctane-d4 | 1219803-37-8 | 95.0% | 197.15 | C8H13D4Br | 1 MG
1-Bromooctane-d4 is the deuterium-labeled analogue of 1-bromooctane used as an isotope-labeled tracer and internal standard in analytical chemistry and mass spectrometry. It contains four deuterium atoms (d4), has molecular formula C8H13D4, and a molecular weight of 197.15 g·mol-1. Typical applications include quantitative analysis, structure elucidation, and mechanistic studies.
- Deuterium-labeled internal standard for mass spectrometry quantification.
- Useful tracer for metabolic and mechanistic studies.
- Improves accuracy and precision in isotope-dilution assays.
- Compatible with common organic solvents and GC/MS workflows.
- Supplied in small reference quantities suitable for analytical use.