Isotopically Labeled Compounds
Medchemexpress LLC L-Citrulline-d4 | 1217474-00-4 | 179.21 | 1 MG
L-Citrulline-d4 is a deuterium labeled form of L-Citrulline, an amino acid derived from ornithine in various metabolic pathways. It serves as a tracer and an internal standard for quantitative analysis using techniques like NMR, GC-MS, or LC-MS. Deuteration, the incorporation of stable heavy isotopes into drug molecules, is used for quantitation during drug development and can influence the pharmacokinetic and metabolic profiles of drugs.
- Used as a tracer for quantitative analysis.
- Functions as an internal standard for analytical methods.
- Suitable for NMR, GC-MS, or LC-MS applications.
- Can affect pharmacokinetic and metabolic profiles.
Medchemexpress LLC L-Cystine-15N2 | 952407-61-3 | 242.29 | 100 UG
L-Cystine-15N2 is an 15N-labeled version of L-Cystine, an amino acid and intracellular thiol. L-Cystine plays a vital role in regulating cellular processes. This product is intended for research use only.
- Purity: 99.27%.
- Applications include use as a tracer.
- Can be used as an internal standard for quantitative analysis via NMR, GC-MS, or LC-MS.
- Recommended storage for powder: -20°C for 3 years or 4°C for 2 years.
- Recommended storage in solvent: -80°C for 6 months or -20°C for 1 month.
Medchemexpress LLC L-Glutamine-13C5,15N2,d5 | 2123439-02-9 | 158.13 | 5 MG
L-Glutamine-13C5, 15N2, d5 is the deuterium, 13C-, and 15N-labeled form of L-Glutamine. It is a non-essential amino acid involved in numerous metabolic processes, providing a source of carbons for oxidation in some cells. This product is intended for research use only.
- Can be used as a tracer.
- Can be used as an internal standard for quantitative analysis by NMR, GC-MS, or LC-MS.
Medchemexpress LLC Hypericin-d2 | 506.46 | 1 MG
Hypericin-d2 is deuterium labeled Hypericin for research use only. It is intended to be used as a tracer and internal standard for quantitative analysis by techniques such as NMR, GC-MS, or LC-MS. Deuteration has the potential to influence the pharmacokinetic and metabolic profiles of drugs.
- Used as a tracer
- Functions as an internal standard for quantitative analysis
- Applicable for NMR, GC-MS, or LC-MS
- Deuterium labeled compound
Medchemexpress LLC (rac)-viloxazine-d5 hydrochloride | 1276483-10-3 | 278.79 | C13H15D5ClNO3 | 1MG
(rac)-Viloxazine-d5 hydrochloride is the deuterium-labeled racemic form of viloxazine hydrochloride supplied as a stable-isotope reference standard for analytical and research use. It is provided as the hydrochloride salt and intended for use as an internal standard or tracer in mass spectrometry assays; not for human or clinical use. Molecular formula C13H15D5ClNO3, molecular weight 278.79, CAS 1276483-10-3.
- Deuterium-labeled tracer (d5).
- Racemic form.
- Hydrochloride salt.
- Suitable for liquid chromatography-mass spectrometry internal standard use.
- Intended for research use only, not for human use.
- Supplied in a small analytical quantity (1 mg) for tracer and calibration workflows.
Medchemexpress LLC Bromocyclohexane-d11 | 35558-49-7 | MFCD00190385 | >98.0% | 174.12 | C6D11Br | 100 MG
Bromocyclohexane-d11 is the deuterium-labeled analogue of bromocyclohexane provided for research use as a stable isotope reagent and internal standard. It is intended for mechanistic studies, tracer experiments, and mass spectrometry applications where deuterium labeling improves compound tracking and quantitation. Not for human or clinical use.
- Deuterium-labeled tracer for mechanistic studies.
- Suitable as an internal standard for GC-MS quantitation.
- High isotopic enrichment (>98 atom % D) for reliable detection.
- Available in mg-scale packages for analytical workflows.
- For research use only; not for patient or clinical use.
Cayman Chemical Sphingosine d18 1
Sphingosine (d18:1) is formed primarily from the breakdown of ceramide. Sphingosine inhibits PKC and phosphatidic acid phosphohydrolase, whereas it activates PLD and DAG kinase. Phosphorylation of sphingosine by SPHK 1 and SPHK 2 produces sphingosine-1-phosphate, a potent bioactive lipid that exhibits a broad spectrum of biological activities including cell proliferation, survival, migration, cytoskeletal organization, and morphogenesis.
Cayman Chemical Sphingosine d17 1
A naturally-occurring but uncommon form of sphingosine, accounting for approximately 13% of the sphingosine in human skin; can be phosphorylated by sphingosine kinases to produce C17 sphingosine-1-phosphate
Cayman Chemical LthreoSphingosine d18 1
An analog of D-erythro-sphingosine; inhibits PKC in mixed micelle assays with 50% inhibition at 2.2 mol % making it a more potent inhibitor compared to D-erythro-sphingosine or other analogs of shorter alkyl chain length
![Revvity Health Sciences Inc dATPαS, [<sup>35</sup>S]- 1250 Ci/mmol, 12.5 mCi/ml, 250 µCi](https://assets.fishersci.com/TFS-Assets/CCG/product-images/502809821.jpg-250.jpg)
Revvity Health Sciences Inc dATPαS, [35S]- 1250 Ci/mmol, 12.5 mCi/ml, 250 µCi
dATPαS, [35S]- 1250 Ci/mmol, 12.5 mCi/ml, 250 µCi
Medchemexpress LLC Decanoic acid-d5 | 1219803-00-5 | MFCD01317497 | 98.3% | 177.30 | C10H15D5O2 | 10 MG
Decanoic acid-d5 is the deuterium-labeled analogue of decanoic acid, provided as a high-purity stable isotope reagent for analytical and biological research. It serves as an internal standard, tracer, or reference compound in mass spectrometry and metabolic studies, enabling confident identification and quantification through a predictable mass shift.
- High isotopic labeling (D5) for clear mass separation.
- High purity (98.3%) suitable for analytical workflows.
- Compact research-scale quantity for easy storage and handling.
- Soluble in DMSO at high concentration for convenient stock solutions.
- Stable under recommended storage conditions for long-term use.
- Suitable as an internal standard in mass spectrometry and tracer studies.
Cambridge Isotope Laboratories BILE ACID STANDARD 1 MIX (UNCO
BILE ACID STANDARD 1 MIX (UNCONJUGATED), 1 VIAL