Isotopically Labeled Compounds
Medchemexpress LLC Vitamin D3-d7 | 1627523-19-6 | C27H37D7O | 500 UG
Vitamin D3-d7 is a deuterium-labeled form of Vitamin D3 (Cholecalciferol), a naturally occurring vitamin known to induce cell differentiation and prevent the proliferation of cancer cells. It incorporates stable heavy isotopes of hydrogen, carbon, and other elements into drug molecules, primarily as tracers for quantitation during drug development, with potential to influence pharmacokinetic and metabolic profiles.
- 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-Met-OH-13C5,15N | 1217437-64-3 | 377.41 | 10 MG
Fmoc-Met-OH-13C5,15N is a 15N-labeled and 13C-labeled Fmoc-Met-OH, which is a Methionine derivative. Stable heavy isotopes of hydrogen, carbon, and other elements are incorporated into drug molecules to serve as tracers for quantitation during drug development. Deuteration, in particular, can affect the pharmacokinetic and metabolic profiles of drugs.
- 15N-labeled and 13C-labeled compound
- Derivative of methionine
- Used as a tracer for quantitation in drug development
- For research use only
Medchemexpress LLC Metoprolol-d7 hydrochloride | 1219798-61-4 | 99.7% | 310.87 | 1 MG
Metoprolol-d7 (hydrochloride) is the deuterium labeled Metoprolol. Metoprolol is an orally active, selective β1-adrenoceptor antagonist, demonstrating anti-inflammatory, antitumor, and anti-angiogenic properties. It is ideal for use as a tracer and as an internal standard for quantitative analysis by NMR, GC-MS, or LC-MS.
- Used as a tracer
- Functions as an internal standard for quantitative analysis
- Shows anti-inflammation, antitumor, and anti-angiogenic properties
Medchemexpress LLC Piperidin-4-d5 | 1219799-35-5 | 106.18 | 5 MG
Piperidin-4-ol-d5 is a deuterium-labeled derivative of Piperidin-4-ol, intended for research purposes only and not for human use. This compound can serve as a tracer and an internal standard for quantitative analysis using methods such as NMR, GC-MS, or LC-MS. Deuteration, the incorporation of stable heavy isotopes into drug molecules, is primarily used for quantitation during drug development and has shown potential to influence the pharmacokinetic and metabolic profiles of drugs. The product appears as a white to off-white solid.
- 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 Indole-d6 | 104959-27-5 | 123.18 | 10 MG
Indole-d6 is a deuterium-labeled indole and an endogenous metabolite. It is intended for research use only.
- Used as a tracer
- Functions as an internal standard for quantitative analysis by NMR, GC-MS, or LC-MS
- Store powder at -20°C for 3 years
- Store in solvent at -80°C for 6 months or -20°C for 1 month
Medchemexpress LLC Diphenylmethanol-d5 | 95450-78-5 | 189.26 | 5 MG
Diphenylmethanol-d5 is a deuterium labeled Diphenylmethanol, for research use only. This compound can be used as a tracer and as an internal standard for quantitative analysis by NMR, GC-MS, or LC-MS. 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.
- Used as a tracer for quantitative analysis
- Can be used as an internal standard for quantitative analysis by NMR, GC-MS, or LC-MS
- Potential to affect pharmacokinetic and metabolic profiles of drugs
Medchemexpress LLC N-tridecyl alcohol-d27 | 203633-18-5 | 227.53 | 100 MG
N-Tridecyl Alcohol-d27 is the deuterium labeled 1-Tridecanol. 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.
- Deuterium labeled 1-Tridecanol
- Used as a tracer for quantitation during drug development
- Potential to affect pharmacokinetic and metabolic profiles of drugs
- Store in pure form at -20°C for 3 years
- Store in solvent at -80°C for 6 months or -20°C for 1 month
Medchemexpress LLC 7-keto-Deoxycholic acid | 911-40-0 | 99.7% | 406.56 | 5 MG
7-keto-Deoxycholic acid is a metabolite of bile acids found in *Clostridium absonum*. It is also produced from *Lactobacillus* and *Bifidobacterium* under specific conditions. In vitro, its bioconversion rate increases with the addition of an equimolar concentration of deoxycholic acid. It is induced by deoxycholic acid and subsequently metabolized. For example, *E. lentum-like c-25* can convert cholic acid to deoxycholic acid and 7-keto-Deoxycholic acid under anaerobic incubation.
- Metabolite of bile acids.
- Can be converted from *Lactobacillus* and *Bifidobacterium*.
- Available in various quantities.
- High purity.
- Solid appearance, white to off-white color.
- Endogenous metabolite.
- Shipping at room temperature in continental US; storage at 4°C, protected from light.
- Soluble in DMSO.
Medchemexpress LLC L-glutamine-13C5,15N2,d5 | 2123439-02-9 | 99.9% | 158.13 | 13C5H5D515N2O3 | 10 MG
L-Glutamine-13C5,15N2,d5 is an isotopically labeled form of the amino acid L-glutamine containing five 13C atoms, two 15N atoms, and five deuterium atoms. Supplied as a 10 mg research pack, it is suitable for analytical and tracer applications such as mass spectrometry and NMR.
- Isotopically labeled with 13C, 15N, and deuterium for tracer studies.
- High isotopic and chemical purity for analytical workflows.
- Small 10 mg pack convenient for method development and limited-sample work.
- Solid form for accurate weighing and sample preparation.
- Compatible with mass spectrometry and NMR applications.
Medchemexpress LLC Posaconazole-d5 | 1217785-83-5 | 99.1% | 705.81 g/mol | C37H37D5F2N8O4 | 10 MG
Posaconazole-d5 is the deuterium-labeled analogue of posaconazole, provided as a high-purity stable isotope for use as an internal standard or tracer in analytical workflows. It is intended for quantitative method development and bioanalytical applications, supporting accurate quantitation in complex matrices when used with appropriate instrumentation and controls.
- High isotopic purity for reliable internal standard performance.
- Suitable for NMR, GC-MS, and LC-MS quantitative analysis.
- High chemical purity for reproducible analytical results.
- Available in small-mass vials convenient for trace-level experiments.
- Stable under recommended storage conditions to preserve integrity.
Medchemexpress LLC 17beta-dihydroequilin-2,4,16,16-d4 | 350819-99-7 | MFCD01074213 | 99.0% | 272.37 g·mol-1 | C18H16D4O2 | 5 MG
β-Dihydroequilin-d4 is the deuterium-labeled isotopologue of β-dihydroequilin intended for use as an analytical standard and internal standard in mass spectrometry and quantitative research. Supplied as a solid high-purity isotopic reference (CAS 350819-99-7), it supports assay development, isotopic tracing, and accurate quantification in laboratory workflows.
- High isotopic enrichment for accurate mass spectrometry quantification.
- Purity reported at approximately 99.0% for analytical use.
- Supplied as a solid for convenient handling and long-term storage.
- Suitable as an internal standard in LC-MS/MS and GC-MS assays.
- Supports isotopic tracing and quantitative method development.
Medchemexpress LLC 4-hydroxybenzonitrile-d4 | 1025089-21-7 | MFCD08704964 | 123.15 | C7HD4NO | 5mg
4-Cyanophenol-d4 is the deuterium labeled 4-Cyanophenol[1]
Medchemexpress LLC Dodecanoic-12,12,12-d3 acid | 79050-22-9 | MFCD00190437 | 98.9% | 203.34 | C12H21D3O2 | 100mg
Lauric acid-d33 is the deuterium labeled Lauric acid Lauric acid is a middle chain-free fatty acid with strong bactericidal properties The EC50s for P acnes S aureus S epidermidis are 2 6 4 g/mL respectively
Medchemexpress LLC 4-n-octyl-anisole-d17 | 1219794-56-5 | 99.2% | 237.46 | C15H7D17O | 10 MG
4-n-Octyl-anisole-d17 is the deuterium-labeled analogue of 4-n-octyl-anisole intended for research use as a tracer and internal standard in quantitative analytical methods. It is used in pharmacokinetic and metabolic studies and is compatible with NMR, GC-MS, and LC-MS workflows.
- Deuterium labeling (d17) provides a clear mass shift for tracer and internal standard applications.
- Compatible with NMR, GC-MS, and LC-MS for quantitative analysis.
- Stable isotope labeling supports pharmacokinetic and metabolic profiling.
- Chemical formula C15H7D17O and molecular weight 237.46 aid molecular identification.
- High reported purity (99.2%) suitable for analytical standards.
- Available in small research package sizes (1 mg, 5 mg, 10 mg).