Isotopically Labeled Compounds

Medchemexpress LLC Benzoic acid, 3,6-dichloro-2-(methoxy-d3)- | 349553-95-3 | 99.7% | 5 MG

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Dicamba-d3 is a deuterium-labeled isotopologue of dicamba supplied for analytical and research use. It is used as a tracer and internal standard for quantitative methods, enabling accurate measurement in NMR, GC-MS, and LC-MS workflows.

• Deuterium-labeled internal standard for quantitative analysis.
• Suitable for NMR, GC-MS, and LC-MS applications.
• High purity (HPLC 99.7%) for accurate quantitation.
• Molecular weight 224.06 g/mol; formula C8H3D3Cl2O3.
• Stable when stored as a powder at -20°C.

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eMolecules​ Medchem Express / Acetylcholine-d4 (bromide) / 1mg / 784544306 / HY-B0282AS1 / / 93449-31-1 / [null] / 230.138 / C7H16BrNO2

Medchem Express / Acetylcholine-d4 (bromide) / 1mg / 784544306 / HY-B0282AS1 / / 93449-31-1 / [null] / 230.138 / C7H16BrNO2

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Cayman Chemical 9-PAHSA 13C4 250ug

An internal standard for the quantification of 9-PAHSA by NMR or GC- or LC-MS

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Medchemexpress LLC Valproic acid-d6 | 87745-18-4 | MFCD01074058 | 99.8% | 150.25 g/mol | C8H10D6O2 | 1 MG

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Valproic acid-d6 is the deuterium-labeled analogue of valproic acid used as an isotopic standard and tracer in analytical and research workflows. It provides a defined mass shift for accurate quantitation by mass spectrometry and is supplied as a high-purity reagent in small-scale quantities.

• Deuterium-labeled analogue for use as an internal standard in mass spectrometry.
• High purity suitable for analytical applications (reported 99.8%).
• Molecular formula C8H10D6O2; molecular weight 150.25 g/mol.
• Supplied as a small, 1 mg package for method development and validation.
• Store at -20°C for long-term stability; short-term storage at 4°C.

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Revvity Health Sciences Inc ATP, [γ-³²P]- 3000Ci/mmol 5mCi/ml , 250 µCi

ATP, [γ-³²P]- 3000Ci/mmol 5mCi/ml , 250 µCi

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Revvity Health Sciences Inc dCTP, [α-32P]- 800Ci/mmol 10mCi/ml EasyTide, 250 µCi

This item is radioactive material and cannot be ordered online

dCTP, [α-32P]- 800Ci/mmol 10mCi/ml EasyTide, 250 µCi

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Revvity Health Sciences Inc Inositol, Myo, -[2-3H(N)]-, Ethanol Solution, 5 mCi (185 MBq)

Inositol, Myo, -[2-3H(N)]-, Ethanol Solution, 5 mCi (185 MBq)

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Revvity Health Sciences Inc Chromium-51 Radionuclide, 5mCi (185MBq), Sodium Chromate in Normal Saline (pH 8-10), Steri-packaged

Chromium-51 Radionuclide, 5mCi (185MBq), Sodium Chromate in Normal Saline (pH 8-10), Steri-packaged

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Revvity Health Sciences Inc Adenosine 3', 5'-Cyclic Phosphate, Ammonium Salt, [2,8-³H]-, 250 µCi (9.25 MBq)

Adenosine 3', 5'-Cyclic Phosphate, Ammonium Salt, [2,8-³H]-, 250 µCi (9.25 MBq)

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Revvity Health Sciences Inc Goat anti-rabbit IgG, [¹²⁵I], 250µCi (9.25MBq)

Goat anti-rabbit IgG, [¹²⁵I], 250µCi (9.25MBq)

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Medchemexpress LLC Toceranib-d8 | 1795134-78-9 | 99.1% | 404.51 g/mol | C22H17D8FN4O2 | 1 MG

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Toceranib-d8 is the deuterium-labeled isotopologue of toceranib, provided as a research-grade analytical standard for laboratory use. It is intended for use as a stable isotope internal standard in LC-MS/MS, pharmacokinetic, and tracer studies to enable accurate quantitation and differentiation from the unlabeled compound.

• Deuterium-labeled internal standard for LC-MS/MS assays.
• High purity (>99%) suitable for analytical applications.
• Intended for pharmacokinetic, bioanalytical, and tracer studies.
• Provided as a small-quantity vial for reference and method development.

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Medchemexpress LLC Ethanolamine-13C2 hydrochloride | 1173019-25-4 | 98.0% | 99.53 | 13C2H8ClNO | 10 MG

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Ethanolamine-13C2 hydrochloride is the 13C-labeled form of ethanolamine hydrochloride supplied as a hydrochloride salt. It is used as an isotope-labeled reagent and internal standard in biochemical, metabolomics, and mass spectrometry workflows.

• Isotopically labeled with two 13C atoms.
• Hydrochloride salt, supplied as a solid.
• High purity: 98.0%.
• Molecular weight: 99.53 g/mol.
• Suitable as an internal standard for mass spectrometry and metabolomics.
• Available in small pack sizes (1 mg, 5 mg, 10 mg).

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Medchemexpress LLC D-ribose-d5 | 99.1% | 155.16 g·mol⁻1 | C5H5D5O5 | 1 MG

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D-Ribose-d5 is the deuterium-labeled form of D-ribose intended for use as a stable isotope reagent in metabolic, tracer, and analytical applications.

• Deuterium-labeled (d5) ribose for tracer and metabolic studies.
• High purity (99.10%) suitable for analytical applications.
• Molecular formula C5H5D5O5; molecular weight 155.16 g·mol⁻1.
• Useful as an internal standard for mass spectrometry and NMR.
• Supplied in small mg-scale quantities for research use.

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Medchemexpress LLC Fluorene-d8 | 35782-21-9 | 174.27 | C13H2D8 | 10 G

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Fluorene-d8 is a deuterium-labeled isotopic standard of fluorene used as an analytical reference in research applications. It has molecular formula C13H2D8, CAS 35782-21-9, and molecular weight 174.27 g/mol. Supplied as a 10 g package; purity and storage instructions are provided in the certificate of analysis.

• Deuterium-labeled internal standard for analytical applications.
• Suitable for mass spectrometry and isotopic tracing experiments.
• Provided in a 10 g package for bulk analytical use.
• Intended for research use only; certificate of analysis contains purity and storage details.
• Compact solid form simplifies handling and long-term storage when stored per CoA guidance.

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Medchemexpress LLC Fluorene-d8 | 35782-21-9 | 174.27 g·mol⁻¹ | C13H2D8 | 1 G

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Fluorene-d8 is the deuterium-labeled analogue of fluorene used as an isotopically labeled standard for analytical, tracer, and mechanistic studies. It is typically supplied as a solid with molecular formula C13H2D8 and molecular weight 174.27 g·mol⁻¹. Intended uses include mass spectrometry internal standards, metabolite tracing, and isotopic labeling experiments; consult the Certificate of Analysis for lot-specific purity and storage conditions.

• Deuterium-labeled internal standard for MS analyses.
• Useful for isotopic tracing and metabolic studies.
• Molecular formula C13H2D8 and molecular weight 174.27 g·mol⁻¹.
• Supplied in multiple pack sizes including 1 g.
• Certificate of Analysis provides lot-specific purity and storage instructions.

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