Isotopically Labeled Compounds
Cambridge Isotope Laboratories POTASSIUM PALMITATE (2,2-D2, 97%), 1 G, 203805-86-1
POTASSIUM PALMITATE (2,2-D2, 97%), 1 G, 203805-86-1
Medchemexpress LLC Treprostinil-d9 | 2747918-14-3 | MFCD23144256 | 99.8% | 399.57 g/mol | C23H25D9O5 | 5 MG
Treprostinil-d9 is a deuterium-labeled analogue of treprostinil used as a stable-isotope internal standard for analytical and pharmacokinetic studies. It is intended for use in mass spectrometry, method development, and quantitative bioanalysis where accurate normalization and peak identification are required.
- Deuterium-labeled internal standard for accurate quantitation in MS assays.
- High purity (99.79%) for reliable analytical performance.
- Molecular weight approximately 399.57 g/mol for precise mass calibration.
- Available in small, research-friendly pack sizes (mg scale).
- Suitable for pharmacokinetic and bioanalytical method development.
Medchemexpress LLC Adenosine-d1 | 109923-50-4 | 99.7% | 268.25 g/mol | C10H12DN5O4 | 10 MG
Deuterium-labeled adenosine used as a tracer or internal standard for quantitative analytical methods such as LC-MS, GC-MS, and NMR. Supplied as a white to off-white solid with high purity and specified storage conditions to maintain stability.
- Deuterium-labeled adenosine for tracer and internal standard use.
- High purity (99.7%) suitable for analytical applications.
- Soluble in DMSO with ultrasonic warming; compatible with LC-MS, GC-MS, and NMR.
- Powder stability: up to 3 years at -20°C; follow solvent storage guidelines for solutions.
Medchemexpress LLC Febuxostat-d7 | 1285539-74-3 | 99.1% | C16H9D7N2O3S | 10MG
Febuxostat-d7 is a deuterium-labeled analogue of febuxostat used as a stable-isotope internal standard for analytical and pharmacokinetic studies. It preserves the febuxostat scaffold and enables mass-differentiated tracer measurements by LC-MS for accurate quantitation.
- Deuterium labeled internal standard for analytical assays.
- Molecular formula C16H9D7N2O3S and molecular weight 323.42.
- High purity (99.06% by HPLC) suitable for quantitative analysis.
- White to off-white solid; store powder at -20°C and solutions at -80°C for long-term stability.
- Intended for research use only; not for human or clinical use.
Selleck Chemical LLC Estrone-d4 E8251-1MG
Estrone-D4 is the deuterated form of Estrone Estrone is an estrogen
Medchemexpress LLC Acetic acid-1-13c | 1563-79-7 | MFCD00037366 | 100.0% | 61.06 g/mol | CH3 13CO2H | 50mg
Acetic acid-1-13C is 13C labeled Acetic acid-1
Medchemexpress LLC 2-aminoethanesulfonic acid-13C2 | 70155-54-3 | MFCD01075566 | 99.0% | 127.13 g/mol | 13C2H7NO3S | 10 MG
Taurine-13C2 is a 13C-labeled form of taurine (2-aminoethanesulfonic acid) provided as a stable isotope standard for analytical and research use. It is supplied as a neat powder intended for use as an internal standard in mass spectrometry, isotope-dilution assays, and metabolic tracer studies.
- 13C2-labeled taurine for use as an internal standard and tracer.
- High isotopic enrichment and 99.0% purity.
- Neat powder form, suitable for mass spectrometry and analytical workflows.
- Small-mass package formats for isotope-dilution and tracer studies.
- Molecular weight 127.13 g/mol; CAS number 70155-54-3.
Cambridge Isotope Laboratories L-Leucine (13C6, 99%), 61-90-5, MFCD00002617, 0.25G
Chemical Formula: (*CH3)2*CH*CH2*CH(NH2)*COOH, Molecular Weight: 137.13, Synonym: (S)-2-Amino-4-methylpentanoic acid-13C6, 13C Labeled L-leucine. For R&D use only. Not for drug, household, or other uses. Any other use is the sole responsibility of the end user.
Cambridge Isotope Laboratories 3-EPI-25-HYDROXYVITAMIN D3 (6,19,19-D3,98%), 1 MG
3-EPI-25-HYDROXYVITAMIN D3 (6,19,19-D3,98%), 1 MG
Cambridge Isotope Laboratories GLYCAN-N56-13C-GAL6,6' ([GALACTOSE-13C6, 99%]2)*, 500 PMOL
GLYCAN-N56-13C-GAL6,6' ([GALACTOSE-13C6, 99%]2)*, 500 PMOL
Cambridge Isotope Laboratories 4-Bromo-2 3 3 4-tetraCB (13C12 99%) 40 ug/mL in nonane 3 mL
4-Bromo-2 3 3 4-tetraCB (13C12 99%) 40 ug/mL in nonane 3 mL