Isotopically Labeled Compounds
Medchemexpress LLC Urea-d4 | 1433-11-0 | MFCD00044227 | 100.0% | 64.08 g/mol | CD4N2O | 1g
Urea-d4 is the deuterium labeled Urea[1] Urea is a powerful protein denaturant via both direct and indirect mechanisms[2] A potent emollient and keratolytic agent[3] Used as a diuretic agent Blood urea nitrogen (BUN) has been utilized to evaluate renal function[4] Widely used in fertilizers as a source of nitrogen and is an important raw material for the chemical industry
Cambridge Isotope Laboratories 3-EPI-25-HYDROXYVITAMIN D3 (6,19,19-D3,98%), 1 MG
3-EPI-25-HYDROXYVITAMIN D3 (6,19,19-D3,98%), 1 MG
Cambridge Isotope Laboratories Chlorpyrifos-methyl (dimethyl-D6 98%) 100 ug/mL in nonane 1 2 mL
Chlorpyrifos-methyl (dimethyl-D6 98%) 100 ug/mL in nonane 1 2 mL
Medchemexpress LLC β-Zearalanol-d4 | 1778735-09-3 | 1 MG
β-Zearalanol-d4 is a deuterium-labeled Beta-Zearalanol, a mycotoxin produced by Fusarium spp. This compound is known to induce apoptosis and oxidative stress in mammalian reproductive cells and is a derivative of zearalenone (ZEA). Deuterated compounds like β-Zearalanol-d4 are valuable as tracers and internal standards in drug development and analytical research, as their stable heavy isotopes can influence pharmacokinetic and metabolic profiles.
- Can be used as a tracer
- Serves as an internal standard for quantitative analysis (NMR, GC-MS, LC-MS)
- Deuterium labeling can affect pharmacokinetic and metabolic profiles of drugs
- For research use only
Medchemexpress LLC Febuxostat-d7 | 1285539-74-3 | MFCD21363616 | 99.1% | 323.42 g/mol | C16H9D7N2O3S | 5 MG
Febuxostat-d7 is a deuterium-labeled analog of febuxostat used as a stable-isotope internal standard for analytical and pharmacokinetic studies. It retains the parent scaffold while providing a defined mass shift for accurate quantitation by LC-MS, GC-MS, and NMR. Supplied as a high-purity research-grade standard (CAS 1285539-74-3; formula C16H9D7N2O3S; MW 323.42).
- High isotopic labeling for reliable mass differentiation.
- Suitable as an internal standard for LC-MS, GC-MS, and NMR quantitation.
- High purity minimizes interference in analytical workflows.
- Stable under recommended storage conditions for reproducible results.
- Intended for research use only; not for human consumption.
Medchemexpress LLC Allopurinol-d2 | 916979-34-5 | 99.4% | 1 MG
Allopurinol-d2 is a deuterium-labeled version of Allopurinol, which is a potent xanthine oxidase inhibitor (IC50 values of 0.2 to 50 μM). It is utilized in research for hyperuricemia, gout, and exhibits antileishmanial effects. Deuterium substitution has been explored for its potential to influence the pharmacokinetic and metabolic profiles of drugs.
- Potent xanthine oxidase inhibitor
- Used for research of hyperuricemia and gout
- Exhibits antileishmanial effect
- Can be used as a tracer for quantitation
- Serves as an internal standard for quantitative analysis by NMR, GC-MS, or LC-MS
Medchemexpress LLC Dimethylamine-d6 hydrochloride | 53170-19-7 | MFCD00064544 | 98.0% | 87.58 | C2H2D6ClN | 100mg
Dimethylamine-d6 hydrochloride is a deuterium labeled Dimethylamine hydrochloride Dimethylamine hydrochloride is the immediate precursor of dimethylnitrosamine a known potent carcinogen in a wide variety of animal species[1]
Cayman Chemical Nicotinamide-d4, Purity: ≥99% deuterated forms (d1-d4), CAS: 347841-88-7, 25 mg
An internal standard for the quantification of nicotinamide by GC- or LC-MS
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.
Medchemexpress LLC D-glucose-d4 | 478529-49-6 | 99.0% | 184.18 g/mol | C6H8D4O6 | 10 MG
D-Glucose-d4 is a deuterium-labeled D-glucose used as an isotopic internal standard and tracer for analytical and metabolic studies. It is commonly applied in LC-MS, GC-MS, NMR, and metabolic flux experiments where stable isotope labeling enables tracking or accurate quantification.
- Deuterium labeling: d4
- Purity: 99.0%
- Chemical formula: C6H8D4O6
- Molecular weight: 184.18 g/mol
- Appearance: solid, white to off-white
- Storage: powder -20°C (3 years) or 4°C (2 years); in solvent -80°C (6 months) or -20°C (1 month)
- Pack size: 10 MG
![Revvity Health Sciences Inc Ghrelin (human), [His[<sup>125</sup>I]], 10µCi](https://assets.fishersci.com/TFS-Assets/CCG/product-images/502812844.jpg-250.jpg)
Revvity Health Sciences Inc Ghrelin (human), [His[125I]], 10µCi
Ghrelin (human), [His[125I]], 10µCi
Medchemexpress LLC Balsalazide-d4 | 2714315-25-8 | 361.34 | C17H11D4N3O6 | 10 MG
Balsalazide-d4 is a deuterium-labeled analogue of balsalazide intended for use as an analytical/internal standard and research reagent in biochemical and pharmacological studies, particularly those involving interleukin and STAT3 signaling. It is supplied as a 10 mg solid with documented storage and solubility information to support analytical workflows.
- Deuterium-labeled isotopic standard for analytical assays
- Provided as 10 mg of solid suitable for LC-MS and quantitative analysis
- Molecular formula C17H11D4N3O6; molecular weight 361.34
- Soluble in DMSO at 50 mg/mL; ultrasonic assistance may be required
- Storage guidance: powder at -20°C (3 years) or 4°C (2 years); in solvent at -80°C (6 months)
- Suitable for metabolic tracing, quantitation, and mechanism-of-action studies
Cambridge Isotope Laboratories "CELL FREE" AMINO ACID MIX (20 AA) (U-13C, 97-99%; U-15N, 97-99%), 1 G
"CELL FREE" AMINO ACID MIX (20 AA) (U-13C, 97-99%; U-15N, 97-99%), 1 G
Medchemexpress LLC L-Glutamine-N,N2-15N2 | 204451-48-9 | 148.13 | 25 MG
L-Glutamine-15N2 is the 15N-labeled version of L-Glutamine. L-Glutamine (L-Glutamic acid 5-amide) is a non-essential amino acid that is abundant throughout the body and involved in many metabolic processes, providing a source of carbons for oxidation in some cells. This product is for research use only and not sold to patients.
- Can be used as a tracer and as an internal standard for quantitative analysis by NMR, GC-MS, or LC-MS.
- Contains stable heavy isotopes of nitrogen (15N).
- Purity: 99.10%.
- Documentation: data sheet, certificate of analysis, safety data sheet, and handling instructions are available.
- Available in various in-stock sizes.
![Medchemexpress LLC Phenol, 4,4′-[1-(methyl-d3)ethylidene-2,2,2-d3]bis- | 86588-58-1 | 99.7% | 234.32 | 25 MG](https://assets.fishersci.com/TFS-Assets/CCG/product-images/5000384190-logo.png-250.jpg){kind=logo}
Medchemexpress LLC Phenol, 4,4′-[1-(methyl-d3)ethylidene-2,2,2-d3]bis- | 86588-58-1 | 99.7% | 234.32 | 25 MG
Bisphenol A-d6 is the deuterium-labeled Bisphenol A. Bisphenol A is a phenolic, organic synthetic compound used in the production of polycarbonate plastics and epoxy resins. It is classified as an endocrine-disrupting compound (EDC) and is associated with various diseases, including cardiovascular diseases, respiratory diseases, diabetes, kidney diseases, obesity, and reproductive disorders.
- Can be used as a tracer.
- Can be used 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 for quantitation during drug development.
- Deuteration can affect the pharmacokinetic and metabolic profiles of drugs.