Isotopically Labeled Compounds
Cayman Chemical Lithocholic Acid-d4, Purity: ≥99% deuterated forms (d1-d4), CAS: 83701-16-0, 1 mg
An internal standard for the quantification of lithocholic acid by GC- or LC-MS
Cayman Chemical TaurocholIc AcId-d4sodIM500ug
An internal standard for the quantification of taurocholic acid by GC- or LC-MS
Cayman Chemical ProstaglndIn E2-d4 50ug
An internal standard for the quantification of PGE2 by GC- or LC-MS
Cambridge Isotope Laboratories Dimethyl Sulfoxide-d6, 2206-27-1, MFCD00002090, 100 g
Chemical Formula: CD3SOCD3, MW: 84.17, 99.9%, Synonyms: DMSO-D6; Methyl sulfoxide-D6; Hexadeuterodimethyl sulfoxide.
Medchemexpress LLC Retinoic acid-d5 | 78996-15-3 | 99.1% | 305.47 | 500 UG
Retinoic acid-d5 is a deuterium-labeled Retinoic acid, a metabolite of vitamin A crucial for cell growth, differentiation, and organogenesis. It acts as a natural agonist of RAR nuclear receptors with IC50s of 14 nM for RARα/β/γ, and binds to PPARβ/δ with a Kd of 17 nM. It also inhibits transcription factor Nrf2 through retinoic acid receptor alpha activation.
- Used as a tracer
- Used as an internal standard for quantitative analysis by NMR, GC-MS, or LC-MS
Medchemexpress LLC Spermine-d20 | 71-44-3 | 98.5% | 222.46 g/mol | C10H6D20N4 | 1 MG
Spermine-d20 is a deuterium-labeled isotopologue of spermine used as a stable isotope tracer or internal standard for quantitative NMR, GC-MS, and LC-MS analyses. It provides a mass-shifted analog for accurate quantitation in analytical and tracer studies.
- Purity 98.47%.
- Molecular formula C10H6D20N4; molecular weight 222.46 g/mol.
- Used as a tracer or internal standard for NMR, GC-MS, and LC-MS quantitation.
- Appearance white to off-white solid.
- Storage: powder -20°C (3 years); in solution -80°C (6 months), -20°C (1 month).
- Typical analytical pack size available: 1 mg.
Medchemexpress LLC Myo-inositol-d6 | 68922-44-1 | MFCD01074110 | 99.9% | 186.19 | C6H6D6O6 | 10 MG
Deuterium-labeled myo-inositol (i-Inositol-d6) is a fully deuterated isotopologue of myo-inositol provided in small, pre-weighed quantities for analytical and biochemical use. It is intended for applications that require a stable-isotope standard or tracer for mass spectrometry and metabolic studies.
- Stable isotope-labeled (D6) for tracer and quantitation studies.
- High purity (99.89%) suitable for LC-MS and GC-MS reference standards.
- Convenient small, pre-weighed packages for analytical workflows.
- Molecular formula C6H6D6O6 and molecular weight 186.19 for precise calculation and reporting.
- Common applications include internal standard use, metabolic tracing, and analytical reference material.
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.
Medchemexpress LLC L-ornithine-d6 hydrochloride | 347841-40-1 | 99.2% | 174.66 | C5H7D6ClN2O2 | 1 MG
L-ornithine-d6 hydrochloride is the deuterium-labeled hydrochloride salt of L-ornithine supplied for research use. It is used as a stable-isotope reagent and tracer to support accurate quantitation and metabolic studies, particularly in mass spectrometry applications.
- Deuterium-labeled (d6) form for isotope tracing and internal standard use.
- High chemical purity: 99.2%.
- Molecular weight 174.66 and formula C5H7D6ClN2O2 for exact mass calculations.
- Suitable for mass spectrometry, metabolomics, and tracer studies.
- Supplied for research use only; not for human use.
Medchemexpress LLC Aprepitant-d4 | 538.45 | C23H17D4F7N4O3 | 1MG
Aprepitant-d4 is the deuterium labeled Aprepitant[1]
Medchemexpress LLC Xanthine-13C,15N2 | 1262670-81-4 | >98.0% | 155.09 | C413CH4N215N2O2 | 1 MG
Xanthine-13C,15N2 is a stable isotope-labeled xanthine supplied for research use as an internal standard, tracer, or for metabolic and mass spectrometry studies. It carries one 13C and two 15N labels and is provided as a dry powder suitable for analytical workflows.
- Contains 13C and 15N stable isotope labels.
- Suitable as an internal standard for LC-MS and tracer studies.
- High reported purity (≥98.0%).
- Soluble in water and 1 M NaOH under recommended conditions.
- Supplied in small milligram pack sizes for analytical applications.
Cambridge Isotope Laboratories Phenol-D6 (D, 98%), 13127-88-3, MFCD00002144, 5g
Molecular Formula C6D6O, Chemical Purity 98%, Molecular Weight 100.149
Cayman Chemical Spermidine-d6, Purity: ≥99% deuterated forms (d1-d6), CAS: 2514812-10-1, 1 mg
An internal standard for the quantification of spermidine by GC- or LC-MS
Cayman Chemical Ivermectin-d2, Purity: ≥99% deuterated forms (d1-d2), 1 mg
An internal standard for the quantification of ivermectin by GC- or LC-MS