Isotopically Labeled Compounds
Medchemexpress LLC Glycolithocholic aci 10mg | 474-74-8 | 433.62 | C26H43NO4 | 10 MG
Glycolithocholic acid is a glycine-conjugated secondary bile acid supplied as a high-purity analytical standard in solid form for research applications, including studies of bile acid metabolism and biomarker analysis in liver and gastrointestinal disease.
- High purity: 99.90%.
- Solid form, stable for storage and analytical use.
- Molecular formula C26H43NO4 and molecular weight 433.62 g/mol.
- Intended for use as an analytical standard in metabolomics and bile acid research.
- Available in a 10 mg pack size for small-scale assays.
Cayman Chemical cis-10-hydroxy Nortriptyline
An active metabolite of amitriptyline and nortriptyline; formed from amitriptyline and nortriptyline by CYP2D6; inhibits norepinephrine reuptake in rat cortical slices (EC50 = 160 nM)
Cayman Chemical MIltefosIn-d4 1mg
An internal standard for the quantification of miltefosine by GC- or LC-MS
Cayman Chemical DIquat-d4bromIde 10mg
An internal standard for the quantification of diquat by GC- or LC-MS
Revvity Health Sciences Inc Iodine-125 Radionuclide, 2mCi, 10-5M NaOH (pH 8-11), Concentration: >350mCi/mL
Iodine-125 Radionuclide, 2mCi, 10-5M NaOH (pH 8-11), Concentration: >350mCi/mL
![Medchemexpress LLC Dibenzo[b,d]furan-d8 | 93952-04-6 | 99.9% | 176.24 g/mol | C12D8O | 100 MG](https://assets.fishersci.com/TFS-Assets/CCG/product-images/5000301819.png-250.jpg)
Medchemexpress LLC Dibenzo[b,d]furan-d8 | 93952-04-6 | 99.9% | 176.24 g/mol | C12D8O | 100 MG
Dibenzo[b,d]furan-d8 is the deuterium-labeled isotopologue of dibenzofuran supplied as a high-purity stable-isotope reference for analytical and research applications. It is intended for use as a tracer or internal standard in mass spectrometry and environmental contaminant testing, provided as a solid with specified isotopic labeling and purity, for research use only.
- High isotopic enrichment and purity.
- Suitable as a tracer or internal standard for mass spectrometry.
- Stable solid form for storage and handling.
- Available in small pack sizes compatible with analytical workflows.
- For research use only; not for human or clinical use.
Medchemexpress LLC Ethyl 2,2,3,3,4,4,5,5,6,6,7,7,8,8,8-pentadecadeuteriooctanoate | 1219798-38-5 | 98.5% | 187.36 g/mol | C10H5D15O2 | 100 MG
Ethyl octanoate-d15 is a deuterium-labeled analogue of ethyl octanoate used as an isotope-labeled reference standard for mass spectrometry and analytical chemistry. It serves as a stable internal standard for quantitative analyses, method development, and accuracy verification in GC-MS and LC-MS workflows.
- Deuterium-labeled internal standard for mass spectrometry and quantitative analysis.
- High isotopic enrichment and purity (98.5%).
- Molecular formula C10H5D15O2; molecular weight 187.36 g/mol.
- Liquid appearance with density 0.867 g/cm3 for convenient handling.
- Provided with datasheet, COA, and SDS for traceability and quality control.
- Suitable for method development, calibration, and accuracy verification.
Medchemexpress LLC Oxalic acid-13C2 | 62654-02-8 | MFCD00084031 | 99.5% | 92.02 g·mol⁻1 | 13C2H2O4 | 5mg
Oxalic acid-13C2 is the deuterium labeled Oxalic acid 99% (HY-Y0262)[1] Oxalic Acid is a strong dicarboxylic acid occurring in many plants and vegetables and can be used as an analytical reagent and general reducing agent[2]
Medchemexpress LLC Diethylamine-d10hydr 50mg
Diethylamine-d10 hydrobromide is the deuterium labeled Diethylamine hydrobromide[1]
Medchemexpress LLC Benzocaine-d4 | 342611-08-9 | 169.21 g/mol | C9H7D4NO2 | 5mg
Benzocaine-d4 is the deuterium labeled Benzocaine Benzocaine shares a common receptor with all othe rLAs in the voltage-gated Na channel with an IC50 of 0 8 mM tested with a potential of 30 mV
Sigma Aldrich Fine Chemicals Biosciences Bromoethane-13C2 99 atom % 13C | 34189-75-8 | MFCD00143874 | 1G
Bromoethane-13C2 99 atom % 13C | Purity: 99% (CP) | Mol Wt: 110.95 | 34189-75-8 | MFCD00143874 | 1G
Medchemexpress LLC 4-((2r,3s,4r,5s)-3-(3-chloro-2-fluorophenyl)-4-(4-chloro-2-fluorophenyl)-4-cyano-5-neopentylpyrrolid | 1229705-22-9 | MFCD26142931 | 99.6% | 619.50 | C31H26D3Cl2F2N3O4 | 10 MG
Idasanutlin-d3-1 is the deuterium-labeled analogue of idasanutlin supplied as a stable-isotope reference standard for research. It is intended for use as an internal standard or tracer in analytical, pharmacokinetic, and ADME studies of MDM2/p53 inhibitors, enabling accurate quantitation, method validation, and recovery assessment in LC-MS workflows. The product is supplied as a characterized solid with supporting analytical documentation.
- Used as internal standard for LC-MS quantitation.
- Suitable for pharmacokinetic and ADME studies.
- High purity (99.6%).
- Molecular formula C31H26D3Cl2F2N3O4.
- Molecular weight 619.50.
- Supplied with COA, HNMR, LCMS, and SDS.
Medchemexpress LLC Methotrexate-d3 diammonium | 00-00-0 | MFCD08063571 | 99.7% | 491.52 | C20H25D3N10O5 | 5 MG
Methotrexate-d3 diammonium is a deuterium-labeled analog of methotrexate provided as the diammonium salt for research use. It serves as a stable isotope internal standard and analytical reference for LC-MS, pharmacokinetic, and tracer studies, supplied in small milligram quantities with high isotopic purity.
- Deuterium-labeled internal standard for mass spectrometry.
- High purity (≈99.7%) suitable for analytical applications.
- Diammonium salt form for improved handling and stability.
- Soluble in DMSO for easy sample preparation.
- Available in small milligram pack sizes for research use.
Cayman Chemical ValdecoxIb-d3 1mg
An internal standard for the quantification of valdecoxib by GC- or LC-MS
![Revvity Health Sciences Inc ATP, [γ-<sup>32</sup>P]- 6000Ci/mmol 10mCi/ml EasyTide, 500 µCi](https://assets.fishersci.com/TFS-Assets/CCG/product-images/502810896.jpg-250.jpg)
Revvity Health Sciences Inc ATP, [γ-32P]- 6000Ci/mmol 10mCi/ml EasyTide, 500 µCi
ATP, [γ-32P]- 6000Ci/mmol 10mCi/ml EasyTide, 500 µCi