Isotopically Labeled Compounds
Medchemexpress LLC D-ribose-d5 | 99.1% | 155.16 g·mol⁻1 | C5H5D5O5 | 1 MG
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.
Medchemexpress LLC Nordoxepin-d4 hydrochloride | 2249819-14-3 | 99.9% | 305.84 g/mol | C18H16D4ClNO | 5 MG
Nordoxepin-d4 hydrochloride is the deuterium-labeled analog of nordoxepin hydrochloride supplied for use as an isotopically labeled internal standard in analytical and research applications. It is provided as a high-purity solid suitable for method development, quantitation, and metabolite studies. For research use only.
- Deuterium-labeled internal standard for quantitative analysis.
- High purity (99.9%) for reliable analytical performance.
- Molecular formula C18H16D4ClNO; molecular weight 305.84 g/mol.
- Available in small milligram quantities for analytical workflows.
- Supplied as hydrochloride salt for stability in common solvents.
Cambridge Isotope Laboratories CORTISOL-21-SULFATE, SODIUM SA (9,11,12,12-D4, 98%) CHEMICAL , 1 MG
CORTISOL-21-SULFATE, SODIUM SA (9,11,12,12-D4, 98%) CHEMICAL , 1 MG
Medchemexpress LLC Thiabendazole-d4 | 1190007-20-5 | 98.8% | 205.27 g/mol | C10H3D4N3S | 10 MG
Thiabendazole-d4 is the deuterated isotopologue of thiabendazole, supplied as a solid stable isotope-labeled reference material for analytical and research use. It is formulated for use as an internal standard and reference in mass spectrometry and quantitative assays.
- Deuterated internal standard for mass spectrometry and quantitative assays.
- High chemical purity (98.84%) for reliable analytical performance.
- White to off-white solid, suitable for handling and weighing.
- Available in small, accurately weighed sizes for reference and calibration.
- Powder stable at -20°C for long-term storage; solvent stability is limited and should follow recommended conditions.
Cayman Chemical DIdnosIn-d2 500ug
An internal standard for the quantification of didanosine by GC- or LC-MS
Cayman Chemical Acephate-d3 1mg
An internal standard for the quantification of acephate by GC- or LC-MS
Medchemexpress LLC O-Toluic acid-d7 | 207742-73-2 | MFCD00216766 | 99.5% | 143.19 | 100 MG
O-Toluic acid-d7 is the deuterium labeled form of o-Toluic acid (2-Methylbenzoic acid), which is a benzoic acid with a methyl group at position 2. This compound functions as a xenobiotic metabolite and is intended 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.
Medchemexpress LLC Benzothioamide-d5 | 1219804-59-7 | >98.0% | 142.23 g/mol | C7H2D5NS | 50 MG
Benzothioamide-d5 (CAS 1219804-59-7) is the deuterium-labeled analogue of benzothioamide supplied as a solid for research applications. It is intended as a stable-isotope reagent or analytical standard for use in mass spectrometry, isotopic tracing, and synthetic chemistry. Not for human use or clinical applications.
- Deuterium labeled for isotopic tracing and mass spectrometry.
- High chemical purity and isotopic enrichment (≥98%).
- Supplied as a solid for convenient storage and handling.
- Suitable as an internal standard for quantitative analysis.
- For research use only; not for human or clinical use.
![Revvity Health Sciences Inc L-[<sup>35</sup>S]-Methionine, 1mCi (37MBq), Specific Activity:>800Ci (29.6TBq)/mmole, 50mM Tricine, 10mM BME](https://assets.fishersci.com/TFS-Assets/CCG/product-images/502810790.jpg-250.jpg)
Revvity Health Sciences Inc L-[35S]-Methionine, 1mCi (37MBq), Specific Activity:>800Ci (29.6TBq)/mmole, 50mM Tricine, 10mM BME
L-[35S]-Methionine, 1mCi (37MBq), Specific Activity:>800Ci (29.6TBq)/mmole, 50mM Tricine, 10mM BME
Medchemexpress LLC Afatinib-d6 | 1313874-96-2 | 99.0% | 491.98 | C24H19D6ClFN5O3 | 10 MG
Afatinib-d6 is a deuterium-labeled analogue of the irreversible EGFR-family inhibitor afatinib, provided for research use as an internal standard or tracer in quantitative analytical methods (LC-MS, GC-MS, NMR). It is intended for analytical and pharmacokinetic studies where accurate quantification is required.
- Deuterium-labeled internal standard for afatinib quantification.
- High deuterium incorporation; purity ≥99.0%.
- Molecular formula C24H19D6ClFN5O3; molecular weight 491.98.
- Supplied as a 10 mg package suitable for analytical assays.
- For research use only; not for human or clinical use.
Medchemexpress LLC Fmoc-Pro-OH-13C5,15N | 1217452-48-6 | MFCD08702954 | 98% | 343.33 | 10 MG
Fmoc-Pro-OH-13C5,15N is a 15N-labeled and 13C-labeled proline derivative (Fmoc-Pro-OH). Stable heavy isotopes like these are incorporated into drug molecules for quantitation during drug development processes. This compound is also suitable for peptide synthesis.
- Isotopic purity 98 atom % 13C, 98 atom % 15N
- Solid form
- Suitable for bio NMR technique
- Melting point 117-118 °C
- Fmoc functional group
- Mass shift M+6
- Recommended storage at -20°C
Medchemexpress LLC L-Leucine-1-13C,15N | 80134-83-4 | 133.16 | 25 MG
L-Leucine-1-13C,15N is a 13C- and 15N-labeled form of L-Leucine, an essential branched-chain amino acid (BCAA). This compound is known to activate the mTOR signaling pathway and is intended solely for research applications.
- For research use only
- Activates the mTOR signaling pathway
- 13C- and 15N-labeled L-Leucine
- Essential branched-chain amino acid
Medchemexpress LLC Nicosulfuron-d6 | 1189419-41-7 | 98.4% | 1 MG
Nicosulfuron-d6 is a deuterium-labeled version of Nicosulfuron, a selective herbicide from the sulfonylurea family. It is commonly applied as a post-emergence herbicide to safeguard maize crops from weeds by inhibiting the activity of the acetolactate synthase (ALS) enzyme.
- 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 can impact the pharmacokinetic and metabolic profiles of drugs.
Cambridge Isotope Laboratories ACETIC ACID (1,2-13C2, 99%), 1 G, 16651-47-1
ACETIC ACID (1,2-13C2, 99%), 1 G, 16651-47-1
Medchemexpress LLC Methanol-d1 | 1455-13-6 | MFCD00044213 | 99.8% | 33.05 g·mol⁻¹ | CH3DO | 5 G
Methanol-d1 (CH3DO) is the deuterium-labeled form of methanol used as an isotopically enriched solvent and tracer in analytical and synthetic chemistry. It provides a single deuterium substitution that aids NMR spectral interpretation and isotopic labeling studies. Typical properties include CAS 1455-13-6 and a molecular weight of 33.05 g·mol⁻¹.
- High isotopic purity (reported 99.8%).
- Useful as an NMR solvent and spectral reference.
- Suitable for mass spectrometry and isotopic labeling experiments.
- Volatile, low boiling solvent-handle in a fume hood.
- Supplied in small research-scale packages (5 g) for laboratory use.