Isotopically Labeled Compounds
Cambridge Isotope Laboratories Acrylonitrile (D3 98%) ( 0 1% 4-methoxyphenol) 5 g
Acrylonitrile (D3 98%) ( 0 1% 4-methoxyphenol) 5 g
Medchemexpress LLC Valproic acid-d15 | 362049-65-8 | 99.8% | 159.30 g·mol⁻¹ | C8HD15O2 | 10 MG
Valproic acid-d15 is the deuterium-labeled stable isotope of valproic acid provided as a high-purity analytical standard for mass spectrometry, isotope-dilution quantification, and pharmacokinetic or metabolic tracer studies. It offers consistent isotopic labeling for accurate internal standard performance.
- Deuterium-labeled (d15) analog for isotope-dilution assays.
- Purity 99.8% for reliable analytical results.
- Suitable as an internal standard for LC-MS/MS workflows.
- Useful for tracer studies and pharmacokinetic/metabolic research.
- Available in small, pre-weighed quantities for method development.
Cambridge Isotope Laboratories GLYCINE (1-13C, 99%; 15N, 98%+), 1 G, 112898-03-0
GLYCINE (1-13C, 99%; 15N, 98%+), 1 G, 112898-03-0
Cambridge Isotope Laboratories TRANS-NONACHLOR UNLABEL 100 UG
5000168152 TRANS-NONACHLOR UNLABEL 100 UG
Cambridge Isotope Laboratories MONOCYCLOHEXYL PHTHALATE UNLAB
5000168153 MONOCYCLOHEXYL PHTHALATE UNLAB
Medchemexpress LLC Hepes-d18 | 203805-87-2 | 99.89% | 50 MG
HEPES-d18 is the deuterium labeled version of HEPES. HEPES is a nonvolatile zwitterionic chemical buffering agent commonly used in cell culture. It is effective within a pH range of 6.8 to 8.2 and is also recognized as a potent inducer of lysosome biogenesis.
- Used as a tracer.
- Can be used as an internal standard for quantitative analysis by NMR, GC-MS, or LC-MS.
- Stable heavy isotope incorporated into drug molecules.
- Potential to affect pharmacokinetic and metabolic profiles of drugs through deuteration.
Medchemexpress LLC 7-hydroxywarfarin-d5 | 94820-65-2 | 98.1% | 329.36 g/mol | C19H11D5O5 | 5 MG
7-Hydroxywarfarin-d5 is a deuterium-labeled isotopologue of 7-hydroxywarfarin provided for research applications as an analytical reference and internal standard. It is supplied as a white to off-white solid with specified purity and recommended storage conditions for long-term stability. Use is restricted to laboratory research and analytical workflows.
- Deuterium-labeled internal standard for mass spectrometry and quantitative assays.
- High purity suitable for analytical applications.
- Available in small mg quantities for method development and validation.
- Soluble in DMSO at high concentration; ultrasonic agitation recommended.
- Store sealed at -20°C; stock solutions stable at -80°C for up to 6 months.
Medchemexpress LLC Nortriptyline-d3 hydrochloride | 203784-52-5 | MFCD00198172 | 99.7% | 302.86 g/mol | C19H19D3ClN | 10 MG
Nortriptyline-d3 hydrochloride is a deuterium-labeled internal standard of nortriptyline (desmethylamitriptyline) intended for analytical and research use. It is provided as a white to off-white solid with high isotopic enrichment and suitability for quantitative LC-MS/MS assays, method development, and pharmacokinetic studies.
- Stable-isotope labeled internal standard for mass spectrometry.
- High purity suitable for quantitative analysis.
- Provided as a solid convenient for storage and handling.
- Available in multiple small package sizes for analytical workflows.
- Suitable for method development, validation, and pharmacokinetic studies.
Cambridge Isotope Laboratories Phorate (diethoxy-13C4 99%) 100 ug/mL in acetonitrile 1 2 mL
Phorate (diethoxy-13C4 99%) 100 ug/mL in acetonitrile 1 2 mL
Medchemexpress LLC L-histidine-d5 hydrochloride hydrate | 2483831-75-8 | 99.6% | 214.66 g/mol | C6H7D5ClN3O3 | 1 MG
L-histidine-d5 hydrochloride hydrate is a deuterium-labeled L-histidine hydrochloride monohydrate supplied as a research-grade analytical standard. The d5 isotopic label provides a mass shift for use as an internal standard or tracer in mass spectrometry and NMR, and the hydrochloride hydrate form offers good stability and solubility for analytical workflows.
- Isotopically labeled with five deuterium atoms (d5) for mass-shifted internal standard use.
- High purity (99.63%) suitable for quantitative and qualitative analyses.
- Hydrochloride hydrate form enhances stability and solubility.
- Supplied in milligram-scale quantities for method development and calibration.
- Appropriate for mass spectrometry, NMR, and tracer studies in research applications.
Sigma Aldrich Fine Chemicals Biosciences Phosgene-13C solution ~1 M in benzene, 99 atom % 13C | 53120-07-3 | MFCD00084048 | 5ML
Phosgene-13C solution ~1 M in benzene, 99 atom % 13C | Mol Wt: 99.91 | 53120-07-3 | MFCD00084048 | 5ML
Medchemexpress LLC Dl-glutamic acid-d5 | 14341-79-8 | 99.7% | 152.16 | C5H4D5NO4 | 1 MG
Deuterium-labeled DL-glutamic acid (d5) provided as a research-grade stable-isotope standard for analytical applications such as mass spectrometry and metabolic tracing. The material is characterized by its molecular formula C5H4D5NO4, molecular weight 152.16, and high chemical purity.
- Deuterium-labeled DL-glutamic acid-d5 for isotope tracing
- High chemical purity of 99.7%
- Available in small research pack sizes, including 1 mg
- Supplied with data sheet, certificate of analysis, and safety data sheet
![Revvity Health Sciences Inc EasyTag L-[<sup>35</sup>S]-Methionine, 5mCi (185MBq), Stabilized Aqueous Solution](https://assets.fishersci.com/TFS-Assets/CCG/product-images/502812747.jpg-250.jpg)
Revvity Health Sciences Inc EasyTag L-[35S]-Methionine, 5mCi (185MBq), Stabilized Aqueous Solution
EasyTag L-[35S]-Methionine, 5mCi (185MBq), Stabilized Aqueous Solution
Medchemexpress LLC Ketoprofen-d4 | 1219805-29-4 | 98.7% | 1 MG
Ketoprofen-d4 (RP-19583-d4) is a deuterium-labeled derivative of Ketoprofen, a non-steroidal anti-inflammatory agent (NSAID). This compound acts as a potent inhibitor of cyclooxygenase (COX) enzymes, with reported IC50 values of 2 nM for COX-1 and 26 nM for COX-2 in human blood monocytes. Deuteration can influence the pharmacokinetic and metabolic profiles of drugs. Ketoprofen-d4 is suitable for use as a tracer in research applications and as an internal standard for quantitative analysis.
- Potent inhibitor of cyclooxygenase enzymes
- Suitable for use as a tracer in research applications
- Ideal as an internal standard for quantitative analysis by NMR, GC-MS, or LC-MS
- Stable heavy isotope
- Highly soluble in DMSO
=O | 5mg | 716242206](https://assets.fishersci.com/TFS-Assets/CCG/product-images/5000191319.jpg-250.jpg)
eMolecules 1420-04-8 | Niclosamide ethanolamine salt | Key Organics/BIONET | MFCD01941566 | 388.200 | C15H15Cl2N3O5 | 98.000 | NCCO.Oc1ccc(Cl)cc1C(=O)Nc1ccc(cc1Cl)[N+]([O-])=O | 5mg | 716242206
Niclosamide ethanolamine salt | Key Organics/BIONET | 1420-04-8 | MFCD01941566 | 388.200 | C15H15Cl2N3O5 | 98.000 | NCCO.Oc1ccc(Cl)cc1C(=O)Nc1ccc(cc1Cl)[N+]([O-])=O | 5mg | 716242206