Isotopically Labeled Compounds
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 Benzo[a]pyrene-d12 | 63466-71-7 | MFCD00143664 | 99.3% | 264.4 g/mol | C20D12 | 1 MG](https://assets.fishersci.com/TFS-Assets/CCG/product-images/5000240646.png-250.jpg)
Medchemexpress LLC Benzo[a]pyrene-d12 | 63466-71-7 | MFCD00143664 | 99.3% | 264.4 g/mol | C20D12 | 1 MG
Benzo[a]pyrene-d12 is the deuterium-labeled analog of benzo[a]pyrene, provided as a high-purity stable isotope standard for research and analytical workflows. It is intended for use as an internal standard in mass spectrometry, quantitation of polycyclic aromatic hydrocarbons, and studies of carcinogenicity and chemoprevention.
- High isotopic enrichment and purity (99.3%).
- Suitable as an internal standard for mass spectrometry and quantitative analysis.
- Useful for environmental, toxicology, and chemoprevention research.
- Chemical formula C20D12; molecular weight 264.4 g/mol.
- Supplied as a 1 mg vial for analytical applications.
Cambridge Isotope Laboratories Benzyl butyl phthalate (unlabeled) 100 ug/mL in nonane 1 2 mL
Benzyl butyl phthalate (unlabeled) 100 ug/mL in nonane 1 2 mL
Medchemexpress LLC 5Z,8Z,11Z,14Z-Eicosatetraenoic-16,16,17,17,18,18,19,19,20,20,20-d11 acid | 2692624-11-4 | 98.0% | 315.53 | 1 ML
Arachidonic acid-d11 is the deuterium labeled Arachidonic acid. Arachidonic acid is an essential fatty acid and a major constituent of biomembranes. 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.
- Incorporated into drug molecules as tracers for quantitation during drug development.
- Potential to affect the pharmacokinetic and metabolic profiles of drugs.
Cambridge Isotope Laboratories N,N-DIMETHYLFORMAMIDE (FORMYL-D, 98-99%), 5 G, 2914-27-4
N,N-DIMETHYLFORMAMIDE (FORMYL-D, 98-99%), 5 G, 2914-27-4
Cambridge Isotope Laboratories 2 2 3 4 4 6-HexaBDE (BDE-139) (13C12 99%) 50 ug/mL in nonane 1 2 mL
2 2 3 4 4 6-HexaBDE (BDE-139) (13C12 99%) 50 ug/mL in nonane 1 2 mL
Cambridge Isotope Laboratories L-Kynurenine sulfate (ring-D4 3 3-D2 97%) CP 95% 0 01 g
L-Kynurenine sulfate (ring-D4 3 3-D2 97%) CP 95% 0 01 g
Cambridge Isotope Laboratories 16 ALPHA-HYDROXYESTRONE (2,3,4-13C3,99%), 0.1 MG, 1241684-28-5
16 ALPHA-HYDROXYESTRONE (2,3,4-13C3,99%), 0.1 MG, 1241684-28-5
Medchemexpress LLC Alanine-2,3,3,3-d4 | 53795-92-9 | MFCD00084108 | 99.8% | 93.12 | C3H3D4NO2 | 100 MG
Alanine-2,3,3,3-d4 is a deuterium-labeled alanine used as a stable-isotope tracer and internal standard for research and analytical workflows. It supports accurate quantitation and method development in biochemical and pharmacokinetic studies, dissolves readily in water, and is supplied with recommended storage conditions for long-term stability.
- Deuterium-labeled alanine for tracer and internal standard use.
- High purity (≈99.8%) suitable for quantitative analysis.
- Soluble in water (≥ 50 mg/mL) for straightforward sample preparation.
- Stable as a powder under frozen storage for long-term use.
- Compatible with NMR, GC-MS, and LC-MS analytical methods.
Cambridge Isotope Laboratories Dechlorane plus Anti (unlabeled) 100 ug/mL in toluene 1 2 mL
Dechlorane plus Anti (unlabeled) 100 ug/mL in toluene 1 2 mL
Medchemexpress LLC Nordoxepin-d4 hydrochloride | 2249819-14-3 | 99.9% | 305.84 | C18H16D4ClNO | 1 MG
Nordoxepin-d4 hydrochloride is the deuterium-labeled hydrochloride salt of nordoxepin provided for research and analytical use. It is intended primarily as an isotopically labeled internal standard or tracer in bioanalytical, pharmacokinetic, and metabolic studies, and is optimized for accurate quantification in mass spectrometry workflows.
- High isotopic and chemical purity (99.9%).
- Suitable as an internal standard for LC-MS/MS and GC-MS assays.
- Useful for bioanalytical quantification and method validation.
- Deuterium labeling enables tracer and metabolic studies.
- Hydrochloride form improves handling and stability.
- For research use only; not for human or veterinary use.