Isotopically Labeled Compounds
Medchemexpress LLC Fenthion-d6 | 1189662-83-6 | 95.0% | C10H9D6O3PS2 | 10MG
Fenthion-d6 is a deuterium-labeled analogue of the organophosphorus insecticide fenthion, provided as an analytical standard for tracer and quantitation in laboratory workflows. It is intended for research use only; handle and store according to the safety data sheet and the certificate of analysis.
- Deuterium-labeled internal standard for accurate quantitation in mass spectrometry.
- Suitable for LC-MS/MS and GC-MS method development and validation.
- Molecular formula C10H9D6O3PS2 and molecular weight 284.37 g·mol⁻1 for clear identification.
- Purity and storage conditions documented in the certificate of analysis.
- Supplied in small research quantities appropriate for analytical use.
American Radiolabeled Chemicals Inc L-689 560 10ME
L-689,560 as a solid 10mg, M.W. 380.0, CAS # 139051-78-8
BioVendor, LLC 1,25(OH)2 Vitamin D Extraction Cartridges (42 ct.)
Silica Extraction Cartridges for 1,25(OH)2 Vitamin D Total ELISA (42 ct.) For use with cat. no. RIS021R. Due to low levels and presence of similar metabolites, 1,25(OH)2 Vitamin D measurement requires extraction and separation by chromatography.
Medchemexpress LLC Haloperidol-d4-1 | 136765-35-0 | MFCD00673279 | 98.0% | C21H19D4ClFNO2 | 10MG
Haloperidol-d4-1 is a deuterium-labeled analogue of haloperidol provided as an analytical reference standard for laboratory and forensic research. It is intended for research use only and not for human or clinical use, and serves as an internal standard for quantitative mass spectrometry assays.
- Provides a stable isotopic internal standard for quantitative LC-MS and GC-MS analysis.
- High isotopic enrichment and consistent mass shift for accurate quantitation.
- High purity suitable for analytical and reference applications.
- White to off-white solid, easy to handle and store under standard conditions.
- Available in small reference sizes compatible with method development.
- Supplied for research use only; not for human or clinical use.
Medchemexpress LLC D-Erythrose-4-13C 25mg | 90913-08-9 | 121.10 g/mol | C4H8O4 (13C-labeled at C-4) | 25 MG
D-Erythrose-4-13C is the carbon-13 labeled form of D-erythrose supplied as an aqueous solution for laboratory research. It is used as a stable-isotope tracer and as an internal standard for quantitative analyses by NMR, GC-MS, and LC-MS. Typical purity is 99.18% and the material is stored at -20°C for long-term stability.
- Used as a stable-isotope tracer for metabolic and pathway studies.
- Suitable as an internal standard for quantitative NMR, GC-MS, and LC-MS.
- Provided as an aqueous solution for convenient handling.
- High chemical purity for accurate analytical measurements.
- Store at -20°C for long-term stability.
Medchemexpress LLC Anabaseine-d4 1mg | 1020719-05-4 | 164.24 g/mol | C10H8D4N2 | 1 MG
Anabaseine-d4 is the deuterium-labeled (d4) analogue of anabaseine provided as a research-grade isotope-labeled standard for analytical and tracer applications. It is intended for non-clinical laboratory use, including mass spectrometry quantitation, metabolic tracing, and analytical method development.
- Deuterium-labeled (d4) analogue for use as an internal standard.
- Intended for research use only; not for human or clinical use.
- Suitable for mass spectrometry and analytical method development.
- Provided as a 1 mg pack for small-scale experiments and standards.
- Chemical formula C10H8D4N2; molecular weight 164.24 g/mol.
Cayman Chemical CytosIn-13C 15N2 10mg
An internal standard for the quantification of cytosine by GC- or LC-MS
Cayman Chemical TaurocholIc AcId-d4sodIM500ug
An internal standard for the quantification of taurocholic acid by GC- or LC-MS
Medchemexpress LLC Olmesartan-d4 | 1420880-41-6 | 98.8% | 450.53 | 5 MG
Olmesartan-d4 (RNH-6270-d4) is the deuterium-labeled version of Olmesartan, an angiotensin II receptor (AT1R) antagonist. It is primarily used to treat high blood pressure. This compound can serve as a tracer and an internal standard for quantitative analysis methods such as NMR, GC-MS, or LC-MS.
- Used as a tracer for quantitation during drug development
- Can be an internal standard for quantitative analysis
- AT1 receptor antagonist
- Deuterium-labeled compound
- Suitable for NMR, GC-MS, or LC-MS applications
Medchemexpress LLC Zanubrutinib-d5 | 00-00-0 | 99.0% | 476.58 g/mol | C27H24D5N5O3 | 1 MG
Zanubrutinib-d5 is a deuterium-labeled analogue of zanubrutinib intended for research use as a tracer or internal standard in quantitative analyses by NMR, GC-MS, and LC-MS. It is supplied as a solid for laboratory studies and therapeutic drug monitoring method development.
- Deuterium-labeled internal standard for quantitative analysis
- Purity: 99.0%
- Molecular formula: C27H24D5N5O3; molecular weight: 476.58 g/mol
- Appearance: white to off-white solid
- Solubility: DMSO 30 mg/mL; may require ultrasonic and warming
- Storage: powder -20°C (3 years) or 4°C (2 years); in solvent -80°C (6 months)
- Packaged in small-mass units suitable for analytical standards (1 mg available)
Medchemexpress LLC p-Fluorophenol-d6 | 1219804-93-9 | 98.5% | 117.13 | C6D5FO | 100mg
p-Fluorophenol-d6 is the deuterium labeled p-Fluorophenol[1]
Medchemexpress LLC Roflumilast-d4 | 1398065-69-4 | C17H10D4Cl2F2N2O3 | 1 MG
Roflumilast-d4 is a deuterium-labeled selective PDE4 inhibitor, primarily used for research. It can be utilized as a tracer or an internal standard for quantitative analysis by methods such as NMR, GC-MS, or LC-MS. Incorporating stable heavy isotopes into drug molecules, such as deuterium, aids in quantitation during drug development and can influence the pharmacokinetic and metabolic profiles of drugs.
- Used as a tracer
- Used as an internal standard for quantitative analysis by NMR, GC-MS, or LC-MS
Medchemexpress LLC Malonyl CoA lithium | 108347-84-8 | 99.0% | C24H38N7O19P3S.xLi | 10MG
Malonyl CoA lithium is the lithium salt of malonyl coenzyme A used as a biochemical tool to modulate fatty acid metabolism. It functions as an inhibitor of carnitine palmitoyl transferase 1 (CPT1) and is provided for research applications with supporting documentation available.
- Inhibits carnitine palmitoyl transferase 1 (CPT1).
- Lithium salt of malonyl coenzyme A.
- Supplied in research-scale quantities (1 mg-100 mg).
- Purity 98.0-99.0% depending on batch.
- Molecular formula C24H38N7O19P3S·xLi.
- Data sheet and SDS available for handling and safety information.
Medchemexpress LLC Indomethacin-d4 methyl ester | 1217064-61-3 | 98.4% | C20H14D4ClNO4 | 10MG
Indomethacin-d4 methyl ester is the deuterium-labeled methyl ester of indomethacin intended for use as an analytical tracer and internal standard in quantitative workflows. It is supplied as a white to off-white solid (C20H14D4ClNO4, MW 375.84) with a manufacturer-stated purity of 98.38% and four deuterium atoms located on the chlorobenzoyl ring. Recommended applications include NMR, GC-MS, and LC-MS quantitation where isotope-resolved mass shifts aid accurate measurement.
- Deuterium-labeled internal standard for quantitative mass spectrometry and NMR.
- High purity (98.38%) suitable for analytical applications.
- White to off-white solid, easy to handle and weigh.
- D4 labeling on the chlorobenzoyl ring provides clear mass shifts for detection.
- Recommended storage: powder at -20°C for long-term stability.
- Compatible with common organic solvents used in LC-MS and GC-MS workflows.