Isotopically Labeled Compounds
Cambridge Isotope Laboratories Progesterone (unlabeled) 100 ug/mL in dioxane 1 2 mL
Progesterone (unlabeled) 100 ug/mL in dioxane 1 2 mL
Cayman Chemical NItenpyram-d3 1mg
An internal standard for the quantification of nitenpyram by GC- or LC-MS
Sigma Aldrich Fine Chemicals Biosciences Benzylamine-15N 98 atom % 15N | 42927-57-1 | MFCD00190515 | 1G
Benzylamine-15N 98 atom % 15N | Purity: 99% (CP) | Mol Wt: 108.15 | 42927-57-1 | MFCD00190515 | 1G
![Revvity Health Sciences Inc Mannitol, D-[2-<sup>14</sup>C]-, 250µCi (9.25MBq)](https://assets.fishersci.com/TFS-Assets/CCG/product-images/502105572.jpg-250.jpg)
Revvity Health Sciences Inc Mannitol, D-[2-14C]-, 250µCi (9.25MBq)
Mannitol, D-[2-14C]-, 250µCi (9.25MBq)
Medchemexpress LLC Propanoic-d5 acid, sodium salt | 202529-18-8 | 99.9% | 10 MG
Propanoic-d5 (sodium) is the deuterium-labeled sodium salt of propionic acid used as a stable isotope tracer in analytical and metabolic studies.
- Deuterium-labeled compound suitable as an internal standard or tracer in mass spectrometry and metabolic research.
- High chemical purity (99.91% by HPLC) for reliable analytical performance.
- Deuterium incorporation (d5) provides clear isotopic distinction from unlabeled analogs.
- Solid form, facilitating handling and long-term storage.
- 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 Adenine-d (6-aminopurine-d1) | 109923-52-6 | MFCD06658867 | 99.9% | 136.13 | C5H4DN5 | 10 MG
Adenine-d (6-aminopurine-d1) is the deuterium-labeled analogue of adenine, supplied as a stable-isotope reagent for biochemical and analytical research. It is intended for metabolic labeling, mass spectrometry reference standards, and studies of nucleic acid metabolism.
- Deuterium-labeled adenine for isotope tracing and analytical studies.
- Chemical formula C5H4DN5.
- Molecular weight 136.13 g/mol.
- Purity 99.9% by specification.
- CAS number 109923-52-6 for unambiguous identification.
- Supplied as a powder commonly in a 10 MG package; store powder at -20°C for long-term stability.
Medchemexpress LLC Bicarbonate-13C sodium | 87081-58-1 | MFCD00084061 | 98.0% | 85.00 g/mol | NaH13CO3 | 250 MG
Bicarbonate-13C sodium is a 13C-labeled sodium bicarbonate supplied as a dry inorganic salt for use as a tracer and internal standard in analytical and metabolic studies. It is applicable to NMR, GC-MS, and LC-MS quantitation, and is useful for pH buffering in biological experiments.
- 13C-labeled tracer for metabolic and pH imaging studies.
- Suitable as an internal standard for NMR, GC-MS, and LC-MS quantitation.
- High chemical purity (≥98.0%).
- Stable solid form for straightforward storage and handling.
- Useful for buffering and pH control in biological media.
American Radiolabeled Chemicals Inc RETINYL PALM-9 10-3H 250UC
Retinyl palmitate-palmitoyl-9,10-3H 250uCi in toluene, 1 mCi/ml, S.A. 50-60 Ci/mmol, M.W. 524.9, Shipped in Dry Ice, Exclusive
Medchemexpress LLC Clothianidin-d3 | 1262776-24-8 | MFCD17019117 | 252.70 g/mol | C6H8ClN5O2S | 5 MG
Clothianidin-d3 is a deuterium-labeled analogue of the neonicotinoid insecticide clothianidin, provided as a 5 mg analytical reference standard for use as an internal standard or reference in mass spectrometry, residue, and trace analysis.
- Isotopically labeled with three deuterium atoms (d3) for accurate mass spectrometry quantification.
- Intended for use as an analytical reference standard and internal standard in LC-MS/MS or GC-MS analyses.
- Provided as a small, neat solid suitable for preparing calibration standards and spike recoveries.
- CAS 1262776-24-8 identifies the deuterated compound for reference in analytical workflows.
- Useful for pesticide residue analysis and trace-level quantification in environmental and food matrices.
Cayman Chemical Adapalen-d3 1mg
An internal standard for the quantification of adapalene by GC- or LC-MS
Revvity Health Sciences Inc Iodine-125 Radionuclide, 2mCi, Specific Activity: ~17Ci/mg, 0.1M NaOH (pH 12-14), Concentration: >350mCi/mL
Iodine-125 Radionuclide, 2mCi, Specific Activity: ~17Ci/mg, 0.1M NaOH (pH 12-14), Concentration: >350mCi/mL
Cayman Chemical TelaprevIr-d4 250ug
An internal standard for the quantification of telaprevir by GC- or LC-MS
Medchemexpress LLC 1,2-propylene-d6 carbonate | 202480-74-8 | MFCD00142486 | 98.7% | 108.13 | C4D6O3 | 100 MG
1,2-Propylene-d6 carbonate is the deuterium-labeled analogue of 1,2-propylene carbonate used as a stable-isotope tracer and internal standard in analytical techniques such as NMR, GC-MS, and LC-MS. It is provided with high isotopic and chemical purity for quantitative studies and metabolic tracing.
- High isotopic labeling (d6) for clear mass shifts.
- Suitable as an internal standard for NMR, GC-MS, and LC-MS.
- High chemical purity for reliable quantitative analysis.
- Available in small research-scale packaging for method development.
- Molecular weight 108.13; formula C4D6O3.
American Radiolabeled Chemicals Inc DADP 2 8-3H 250UC
Deoxyadenosine 5'-2,8-3H diphosphate tetra(triethylammonium) salt 250uCi in ethanol:water (1:1), 1 mCi/ml, S.A. 10-25 Ci/mmol, Shipped in Dry Ice, Exclusive
Cayman Chemical DeoxycholIc AcIdodIum salt 1g
A secondary bile acid; inhibits TCA-induced spore germination in seven C. difficile strains at 0.2% v/v; inhibits growth and decreases the cytotoxicity of C. difficile culture supernatants to Vero cells at 0.02% v/v; inhibits ionizing radiation-induced p53-dependent transcription in a reporter assay using HCT116 cells at 200 µM; fecal and intestinal tissue levels are increased in a rat model of high-fat diet-induced obesity compared with rats fed a normal diet; increased serum levels have been found in patients with colorectal cancer