Isotopically Labeled Compounds
Cayman Chemical Dadzen-d4 5mg
An internal standard for the quantification of daidzein by GC- or LC-MS
Cambridge Isotope Laboratories L-TRYPTOPHAN (13C11, 97-99%; D8, 97-99%; 15N2, 97-99%), 0.25 G
L-TRYPTOPHAN (13C11, 97-99%; D8, 97-99%; 15N2, 97-99%), 0.25 G
Medchemexpress LLC L-glutamine-13C5,15N2 | 285978-14-5 | 98.0% | 153.09 g/mol | 13C5H10 15N2 O3 | 10 MG
L-Glutamine-13C5,15N2 is an isotopically labeled form of L-glutamine in which five carbon atoms are 13C and two nitrogen atoms are 15N. Supplied as a 10 mg solid with 98.0% purity, it is intended for use as an internal standard, tracer, or NMR reference in metabolic and mass spectrometry studies.
- Isotopically labeled (13C5, 15N2).
- High purity: 98.0%.
- Supplied as a 10 mg solid.
- Suitable for metabolic tracing and flux analysis.
- Appropriate as an internal standard for mass spectrometry.
- Useful for NMR and structural studies.
Medchemexpress LLC Malachite green-d5 oxalate | 423.52 g/mol | C25H21D5N2O4 | 2.5 MG
Malachite green-d5 oxalate is the deuterium-labeled isotopologue of malachite green provided as the oxalate salt for research and analytical use. It is intended for use as a tracer or internal standard in mass spectrometry and other analytical workflows, supplied in a small research-scale quantity.
- Deuterium-labeled internal standard for quantitative analysis.
- Provided as an oxalate salt for enhanced stability and handling.
- Suitable for method development and trace-level quantification in analytical assays.
- Certificate of analysis and spectral data are available on request to confirm purity.
- Store and handle according to the certificate of analysis and safety data sheet.
Apexbio Technology LLC D-erythro-Sphingosine (synthetic) 123-78-4 50mg
D-erythro-Sphingosine (synthetic) is an amino alcohol featuring a long-chain unsaturated hydrocarbon backbone Predominant in mammalian systems sphingosine serves as a structural component of sphingolipids alongside its analog sphinganine Functionally sphingosine modulates a variety of cellular processes by acting as a bioactive signaling molecule notably influencing pathways involved in cell growth differentiation and apoptosis In biomedical research D-erythro-Sphingosine is widely utilized to investigate sphingolipid metabolism signal transduction mechanisms and the role of sphingolipid derivatives in physiological and pathological states
Cambridge Isotope Laboratories Ursodeoxycholic acid (24-13C 99%) 0 05 g
Ursodeoxycholic acid (24-13C 99%) 0 05 g
Revvity Health Sciences Inc Iodine-125 Radionuclide, 25mCi, Specific Activity: ~17Ci/mg, 0.1M NaOH (pH 12-14), Concentration: >350mCi/mL
Iodine-125 Radionuclide, 25mCi, Specific Activity: ~17Ci/mg, 0.1M NaOH (pH 12-14), Concentration: >350mCi/mL
Medchemexpress LLC γ-Glu-(Phe-13C9,15N) TFA | 99.7% | 418.25 | C713C9H19F3N15NO7 | 5 MG
γ-Glu-(Phe-13C9,15N) TFA is an isotopically labeled γ-glutamylphenylalanine supplied as the trifluoroacetate salt for use as an internal standard or tracer in analytical and metabolomics workflows. The phenylalanine residue is labeled with 13C9 and the amide nitrogen with 15N, enabling precise quantitation by mass spectrometry and NMR.
- Isotopically labeled phenylalanine residue (13C9) and 15N-labeled amide nitrogen.
- Supplied as the trifluoroacetate (TFA) salt for stability and handling.
- High purity as reported by batch COA (99.74% LCMS).
- Molecular weight approximately 418.25 Da.
- Suitable as internal standard, tracer, or reference in metabolomics and analytical methods.
- Available in small research quantities (for example, 5 mg) for analytical applications.
![Revvity Health Sciences Inc Insulin (porcine), Receptor Grade, [<sup>125</sup>I]Tyr<sup>A14</sup>, 50µCi](https://assets.fishersci.com/TFS-Assets/CCG/product-images/502812326.jpg-250.jpg)
Revvity Health Sciences Inc Insulin (porcine), Receptor Grade, [125I]TyrA14, 50µCi
Insulin (porcine), Receptor Grade, [125I]TyrA14, 50µCi
Medchemexpress LLC Carbon-13C | 14762-74-4 | MFCD00151499 | 97.1% | 13.00 | 13C | 100mg
Carbon-13C is the 13C labeled Carbon[1]
Medchemexpress LLC 1-Chlorooctane-d17 1mg
1-Chlorooctane-d17 is the deuterium labeled 1-Chlorooctane[1]
Medchemexpress LLC Nizatidine-d3 | 1246833-99-7 | MFCD32641299 | 98.8% | 334.48 | C12H18D3N5O2S2 | 10 MG
Nizatidine-d3 is the deuterium-labeled form of nizatidine supplied as an isotope-labeled reference standard for research applications, including mass spectrometry, pharmacokinetic, and metabolic studies. It is intended for use as a labeled internal standard to support quantitative analytical workflows.
- Deuterium-labeled internal standard for mass spectrometry assays.
- High chemical purity: 98.8%.
- CAS number 1246833-99-7 for unambiguous identification.
- Available in small-mass packaged quantities suitable for analytical use.
- Useful for ADME, PK/PD, and quantitative analytical studies.
Medchemexpress LLC Adipic acid-d4 | 121311-78-2 | 98.0% | 150.170 g/mol | C6H6D4O4 | 10 MG
Adipic acid-d4 is a deuterium-labeled stable isotope of adipic acid (CAS 121311-78-2) supplied as a white to off-white solid at 98.0% purity. It is intended for use as an internal standard, tracer, or analytical reference in mass spectrometry and isotopic studies, and is provided in small research pack sizes suitable for quantitative analysis. Store powder at -20°C (3 years) or 4°C (2 years); in solvent store at -80°C (6 months).
- Deuterium-labeled internal standard for mass spectrometry and isotope tracing.
- High purity (98.0%) for reliable analytical performance.
- White to off-white solid suitable for preparation of standard solutions.
- Available in small pack sizes for analytical and research use.
- Suitable for quantitative analysis, method development, and tracer studies.
- Recommended storage conditions provided to preserve stability.
Cayman Chemical ThIamethoxam-d3 1mg
An internal standard for the quantification of thiamethoxam by GC- or LC-MS
Medchemexpress LLC Pefloxacin-d3 | 2733455-58-6 | 99.4% | 336.38 g/mol | C17H17D3FN3O3 | 10 MG
Pefloxacin-d3 is the deuterium-labeled analogue of the fluoroquinolone antibiotic pefloxacin. It inhibits DNA gyrase and interferes with topoisomerase I-mediated DNA relaxation, and is supplied as a high-purity stable isotope for analytical and research use.
- Deuterium-labeled internal standard for quantitative analysis.
- High purity to support analytical accuracy.
- Suitable as a tracer in infection and pharmacokinetic studies.
- Provided as a laboratory-grade powder for analytical workflows.