Isotopically Labeled Compounds

Revvity Health Sciences Inc Triiodothyronine, ([¹²⁵I]-T3), L-3,5,3'-[¹²⁵I]-, 500 µCi (18.5 MBq), Specific Activity: 135-165 µCi (5.00-6.11 MBq)/µg

Triiodothyronine, ([¹²⁵I]-T3), L-3,5,3'-[¹²⁵I]-, 500 µCi (18.5 MBq), Specific Activity: 135-165 µCi (5.00-6.11 MBq)/µg

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Medchemexpress LLC Tasquinimod-d3 | 1416701-99-9 | 99.3% | 409.37 | C20H14D3F3N2O4 | 1 MG

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Tasquinimod-d3 is a deuterium-labeled isotopologue of tasquinimod supplied as a high-purity reference standard for analytical and research applications. It is intended for use as an internal standard or tracer in mass spectrometry, chromatography, and pharmacokinetic studies; not for human therapeutic use.

• High isotopic labeling for accurate mass spectrometry quantitation.
• High chemical purity (99.3%) for reliable analytical results.
• Available in small, pre-weighed quantities suitable for LC-MS workflows.
• Characterized molecular weight and formula for confident identification.
• Provided with documentation to support traceability and analytical use.

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Medchemexpress LLC Risdiplam-d4 | 1825352-65-5 | 98.9% | 405.49 | 100 MG

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Risdiplam-d4 is a deuterium-labeled version of Risdiplam. Risdiplam (RG7916) is an orally administered SMN2 pre-mRNA splicing modifier that is distributed both centrally and peripherally, and it works by increasing survival motor neuron (SMN) protein levels.

• This compound can be used as a tracer.
• It can serve as an internal standard for quantitative analysis using techniques such as NMR, GC-MS, or LC-MS.
• Deuteration can influence the pharmacokinetic and metabolic profiles of drugs.

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Medchemexpress LLC 5,8,11,14-Eicosatetraenoic-5,6,8,9,11,12,14,15-d8 acid, (5Z,8Z,11Z,14Z)- | 69254-37-1 | M002808 | 99.5% | 312.52 | 1 MG

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Arachidonic acid-d8 is the deuterium labeled Arachidonic acid. Arachidonic acid is an essential fatty acid and a major constituent of biomembranes.

• This compound can be used as a tracer.
• This compound can be used as an internal standard for quantitative analysis by NMR, GC-MS, or LC-MS.
• Deuteration has gained attention because of its potential to affect the pharmacokinetic and metabolic profiles of drugs.

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Medchemexpress LLC Trametinib-d4 | 871700-17-3 | 99.9% | 619.42 | 25 MG

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Trametinib-d4 is the deuterium-labeled version of Trametinib. Trametinib is an orally active MEK inhibitor that inhibits MEK1 and MEK2 with IC50s of approximately 2 nM. It also activates autophagy and induces apoptosis.

• Can be used as a tracer
• Can be used as an internal standard for quantitative analysis by NMR, GC-MS, or LC-MS
• Deuterium substitution has the potential to impact the pharmacokinetic and metabolic profiles of drugs

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Sigma Aldrich Fine Chemicals Biosciences Sodium fumarate-2,3-13C2 99 atom % 13C | 287389-39-3 | MFCD01075569 | 100MG

Sodium fumarate-2,3-13C2 99 atom % 13C | Mol Wt: 162.02 | 287389-39-3 | MFCD01075569 | 100MG

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Medchemexpress LLC Hippuric acid-d2 | 208928-78-3 | MFCD01317354 | 99.8% | 181.18 g/mol | C9H7D2NO3 | 25 MG

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Hippuric acid-d2 is a deuterium-labeled reference standard (2-benzamidoacetic acid-d2) supplied as a high-purity solid for use as an internal standard or tracer in LC-MS/MS, metabolic profiling, and related analytical workflows. It provides defined isotopic labeling to improve accuracy and precision in quantitation.

• Deuterium-labeled internal standard for mass spectrometry assays.
• High purity (99.83%) ensures consistent quantitation.
• Molecular weight 181.18 g/mol and formula C9H7D2NO3 for unambiguous identification.
• Solid, white to off-white form for stable storage and handling.
• Recommended storage: -20°C (powder) or -80°C (in solvent) to minimize degradation.

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Revvity Health Sciences Inc dCTP, [α-³²P]- 3000Ci/mmol 10mCi/ml EasyTide, 1 mCi

dCTP, [α-³²P]- 3000Ci/mmol 10mCi/ml EasyTide, 1 mCi

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Medchemexpress LLC Isonicotinic acid-d4 | 53907-55-4 | 98.1% | 127.13 | C6HD4NO2 | 10 MG

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Isonicotinic acid-d4 is the deuterium-labeled analog of isonicotinic acid, provided as an analytical standard for research and quantitative mass spectrometry. It is used as a stable isotope internal standard or tracer in metabolic and analytical studies, supplied in small laboratory pack sizes such as 10 MG.

• Deuterium-labeled internal standard for mass spectrometry.
• High purity suitable for analytical applications (≈98.1%).
• CAS number 53907-55-4 for unambiguous identification.
• Molecular weight 127.13 g/mol for calculation and method development.
• Available in small pack sizes, for example 10 MG, for laboratory use.
• Store sealed and protected from moisture; in solvent: -80°C for long-term storage, -20°C for short-term storage.

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Cambridge Isotope Laboratories PROPANE (D8, 98%), 1 L, 2875-94-7

PROPANE (D8, 98%), 1 L, 2875-94-7

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Cayman Chemical LIthocholIc AcId-d4 1mg

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An internal standard for the quantification of lithocholic acid by GC- or LC-MS

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Medchemexpress LLC D-(+)-glucose-d1-3 | 106032-60-4 | 99.9% | 181.16 g/mol | C6H11DO6 | 10 MG

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D-Glucose-d1-3 is a deuterium-labeled form of D-(+)-glucose with a deuterium atom substituted at positions 1-3. It is provided as a high-purity labeled standard for tracer studies, metabolic research, and analytical applications.

• Deuterium-labeled at positions 1-3.
• Cas number 106032-60-4.
• Molecular formula C6H11DO6.
• Molecular weight 181.16 g/mol.
• Purity 99.9%.
• Available as a 10 mg vial.
• Storage: powder -20°C for long-term; in solvent -80°C for up to 6 months.

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Cambridge Isotope Laboratories ALPHA-KETOISOVALERIC ACID, SODIUM SALT (13C5, 98%), 1 G, 1173018-24-0

ALPHA-KETOISOVALERIC ACID, SODIUM SALT (13C5, 98%), 1 G, 1173018-24-0

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Revvity Health Sciences Inc Sulfur-35 Radionuclide, 1mCi (37MBq), Specific Activity: 1050-1600Ci (38.8-59.2TBq)/mmol, Sodium Sulfate in 1mL Water

Sulfur-35 Radionuclide, 1mCi (37MBq), Specific Activity: 1050-1600Ci (38.8-59.2TBq)/mmol, Sodium Sulfate in 1mL Water

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Revvity Health Sciences Inc Î±-Bungarotoxin, [¹²⁵I]-Tyr⁵⁴-, High Specific Activity, 50 µCi

α-Bungarotoxin, [¹²⁵I]-Tyr⁵⁴-, High Specific Activity, 50 µCi

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