Isotopically Labeled Compounds
![Medchemexpress LLC Dopamine-13c,15n (hydrochloride) | 369656-74-6 | MFCD01074386 | 99.0% | 191.63 g/mol | C7[13C]H12[15N]O2 · HCl | 10 MG](https://assets.fishersci.com/TFS-Assets/CCG/product-images/5000299023.png-250.jpg)
Medchemexpress LLC Dopamine-13c,15n (hydrochloride) | 369656-74-6 | MFCD01074386 | 99.0% | 191.63 g/mol | C7[13C]H12[15N]O2 · HCl | 10 MG
Dopamine-13C,15N hydrochloride is the 13C- and 15N-labeled isotopologue of dopamine hydrochloride used as a stable-isotope standard and tracer in analytical, metabolic, and quantitative mass spectrometry studies. It is supplied as a solid hydrochloride salt with high analytical purity and is intended for laboratory use in trace-level analyses.
- Isotopically labeled internal standard for mass spectrometry
- High analytical purity (≈99.0%)
- Supplied as a solid hydrochloride salt for stability
- Available in small milligram quantities for analytical workflows
- Store sealed at -20°C and protect from moisture
Medchemexpress LLC Stearic acid-d3 | 62163-39-7 | 99.9% | 5 MG
Stearic acid-d3 is the deuterium labeled Stearic acid. Stearic acid is a long chain dietary saturated fatty acid which exists in many animal and vegetable fats and oils. It can be used as a tracer and as an internal standard for quantitative analysis by NMR, GC-MS, or LC-MS.
- Can be used as a tracer
- Can be used as an internal standard for quantitative analysis by NMR, GC-MS, or LC-MS
Medchemexpress LLC Paricalcitol-d6 | 2070009-67-3 | 99.9% | 422.67 g/mol | C27H38D6O3 | 10 MG
Paricalcitol-d6 is the deuterium-labeled analogue of paricalcitol provided as a high-purity research standard for use as a tracer and internal standard in quantitative analytical workflows.
- Deuterium-labeled internal standard for LC-MS and GC-MS.
- Suitable as an NMR reference and tracer in metabolic studies.
- High purity for accurate quantitation (99.85%).
- Supplied as a small-scale powder; store cold to preserve stability.
Medchemexpress LLC o-Toluic acid-13C | 70838-82-3 | 99% | 137.14 | 5 MG
o-Toluic acid-13C is the 13C labeled o-Toluic acid. It is a benzoic acid substituted by a methyl group at position 2, playing a role as a xenobiotic metabolite. This compound is intended for research use only and is not for sale to patients.
- Can be used as a tracer.
- Can be used as an internal standard for quantitative analysis by NMR, GC-MS, or LC-MS.
- Incorporates stable heavy isotopes of hydrogen, carbon, and other elements into drug molecules as tracers for quantitation during the drug development process.
- Potential to affect the pharmacokinetic and metabolic profiles of drugs.
Medchemexpress LLC Methyl 4-hydroxybenzoate-d4 | 362049-51-2 | MFCD01861573 | 98.0% | 10 MG
Methyl paraben-d4 (methyl 4-hydroxybenzoate-d4) is the deuterium-labeled analogue of methyl paraben, supplied as a small solid for use as an analytical/internal standard in chromatography and mass spectrometry. It provides a stable isotope reference for quantitative analyses and method development in laboratory workflows.
- Deuterium-labeled analogue (d4) for use as an internal standard.
- Molecular formula: C8H4D4O3.
- Molecular weight: 156.17 g/mol.
- CAS number: 362049-51-2.
- Supplied as a 10 mg vial suitable for analytical applications.
- Reported isotopic enrichment: ~98 atom % D (supplier listings).
- Intended applications include LC-MS and GC-MS quantitation and method validation.
Medchemexpress LLC 24:0 L-carnitine-d4 | 2260670-68-4 | 515.84 | 1 MG
24:0 L-carnitine-d4 is a chemical compound identified by CAS Number 2260670-68-4 and a molecular weight of 515.84. This product is generally used in research and scientific applications.
- Recommended for long-term storage at -80°C
- Recommended for shorter storage periods at -20°C
- Store in sealed containers
- Protect from moisture and light
- Avoid repeated freeze-thaw cycles
Medchemexpress LLC Ranolazine-d3 | 1054624-77-9 | MFCD00864690 | 99.5% | 430.56 | C24H30D3N3O4 | 10 MG
Deuterium-labeled ranolazine (d3) for research use as an analytical tracer and internal standard. The compound inhibits the late inward sodium current (INa) and the rapid delayed rectifier potassium current (IKr), and acts as a partial fatty acid oxidation inhibitor; it is intended for method development and quantitative analysis by NMR, GC-MS, and LC-MS.
- Deuterium-labeled tracer suitable for quantitation and metabolic studies.
- Purity 99.5%.
- Molecular formula C24H30D3N3O4; molecular weight 430.56.
- Soluble ≥100 mg/mL in DMSO for in vitro applications.
- Recommended storage: powder at -20°C (3 years) or 4°C (2 years); in solvent at -80°C (6 months) or -20°C (1 month).
Medchemexpress LLC Benzyl benzoate-d12 | 352431-26-6 | MFCD01317469 | 99.9% | 224.32 g/mol | C14D12O2 | 10 MG
Benzyl benzoate-d12 is a deuterium-labeled benzyl benzoate supplied as a high-purity stable isotope standard for analytical and research applications. It is intended for use as an internal standard in mass spectrometry, tracer studies, and quantitative analyses, and should be stored under recommended refrigerated or frozen conditions for long-term stability.
- High purity (99.85%) suitable for analytical use.
- Deuterium-labeled internal standard for mass spectrometry.
- Molecular weight 224.32 g/mol and formula C14D12O2.
- Supplied as a 10 mg vial for laboratory use.
- Certificate of analysis and safety data sheet available.
Medchemexpress LLC D-Fructose-4-13C | 84270-09-7 | 1 MG
D-Fructose-4-13C is the 13C labeled D-Fructose. D-Fructose is a naturally occurring monosaccharide found in many plants. This product is for research use only.
- Can be used as a tracer
- Can be used as an internal standard for quantitative analysis by NMR, GC-MS, or LC-MS
- Purity: 99.7%
- Appearance: Solid
- Color: Off-white to light yellow
Medchemexpress LLC Gefitinib-d3 | 1173976-40-3 | 98.4% | C22H21D3ClFN4O3 | 1 MG
Gefitinib-d3 is a deuterium-labeled form of Gefitinib, a potent and selective EGFR tyrosine kinase inhibitor. It effectively inhibits EGF-stimulated tumor cell growth and blocks EGFR autophosphorylation, also demonstrating antitumor activity through autophagy induction. This compound is suitable for use as a tracer or an internal standard for quantitative analysis methods like NMR, GC-MS, or LC-MS.
- Potent and selective EGFR tyrosine kinase inhibitor
- Inhibits EGF-stimulated tumor cell growth and blocks EGFR autophosphorylation
- Induces autophagy and exhibits antitumor activity
- Can be used as a tracer
- Ideal as an internal standard for quantitative analysis (NMR, GC-MS, LC-MS)
Medchemexpress LLC Apixaban-d3 | 1131996-12-7 | 99.9% | C25H22D3N5O4 | 5 MG
Apixaban-d3 (BMS-562247-01-d3) is a deuterium labeled version of Apixaban, a highly selective, reversible, and orally active inhibitor of Factor Xa. Deuterium substitution can influence the pharmacokinetic and metabolic profiles of drugs. This compound is suitable for use as a tracer or an internal standard for quantitative analysis.
- Deuterium labeled Apixaban
- Highly selective, reversible Factor Xa inhibitor
- Useful as a tracer in drug development
- Can be used as an internal standard for quantitative analysis (NMR, GC-MS, LC-MS)
- Potential to affect pharmacokinetic and metabolic profiles
Medchemexpress LLC Nintedanib-d8 | 1624587-87-6 | 99.9% | C31H25D8N5O4 | 5 MG
Nintedanib-d8 is a deuterium labeled Nintedanib, which is a potent triple angiokinase inhibitor targeting VEGFR1/2/3, FGFR1/2/3, and PDGFRα/β.
- Used as a tracer.
- Can be used as an internal standard for quantitative analysis by NMR, GC-MS, or LC-MS.
Cayman Chemical ThIacloprId-d4 5mg
An internal standard for the quantification of thiacloprid by GC- or LC-MS
Cayman Chemical Carbofurn-d3 1mg
An internal standard for the quantification of carbofuran by GC-or LC-MS
Cayman Chemical DL-AspartIcAcId-d3 10mg
An internal standard for the quantification of aspartic acid by GC- or LC-MS