Isotopically Labeled Compounds
Medchemexpress LLC Difloxacin-d3 hydrochloride | 1173021-89-0 | 99.0% | 1MG
Difloxacin-d3 hydrochloride | 1173021-89-0 | 99.0% | 1MG
Medchemexpress LLC (R)-viloxazine-d5 hydrochloride | 1246815-04-2 | 95.0% | 278.79 | C13H15D5ClNO3 | 1MG
(R)-Viloxazine-d5 hydrochloride is the deuterium-labeled R-enantiomer of viloxazine hydrochloride supplied as the hydrochloride salt for use as an isotopic tracer or internal standard in quantitative analysis. It is intended for research use and is commonly applied in NMR, GC-MS, and LC-MS method development. The compound has CAS 1246815-04-2, formula C13H15D5ClNO3, and molecular weight 278.79.
- Deuterium-labeled with five deuteriums for tracer and quantitative applications.
- R-enantiomer suitable for stereospecific studies.
- Hydrochloride salt form for improved stability and handling.
- Intended as an internal standard for NMR, GC-MS, and LC-MS quantitation.
- Reported purity 95.0% as listed by distributor sources.
- Provided in small analytical quantities for standards and method development.
Medchemexpress LLC Cycloguanil-d6 (chlorguanide triazine-d6) | 516-21-2 | 98.0% | 1 MG
Cycloguanil-d6 is a deuterium-labeled version of Cycloguanil, a dihydrofolate reductase (DHFR) inhibitor. It disrupts the folate metabolic pathway, affecting nucleotide synthesis and DNA replication. This compound inhibits DHFR in Plasmodium, useful in malaria research, and also in human cancer cells, demonstrating anticancer properties. Stable heavy isotopes are incorporated for use as tracers in drug development.
- Can be used as a tracer.
- Can be used as an internal standard for quantitative analysis by NMR, GC-MS, or LC-MS.
- Inhibits dihydrofolate reductase (DHFR).
- Disrupts the folate metabolic pathway.
- Affects nucleotide synthesis and DNA replication.
- Useful in malaria research.
- Demonstrates anticancer properties.
Cambridge Isotope Laboratories GLYCAN-O17-13C-GAL4 (GALACTOSE-13C6, 99%), 500 PMOL
GLYCAN-O17-13C-GAL4 (GALACTOSE-13C6, 99%), 500 PMOL
Cambridge Isotope Laboratories L-PHENYLALANINE-N-FMOC (D8, 98%), 0.1 G
L-PHENYLALANINE-N-FMOC (D8, 98%), 0.1 G
Medchemexpress LLC L-Aspartic acid-d3 | 3842-25-9 | 136.12 | 50 MG
L-Aspartic acid-d3 is the deuterium-labeled form of L-Aspartic acid, an amino acid capable of penetrating the blood-brain barrier. It is commonly used in preparing prodrugs for colon and cecal tissues and in studying inflammatory conditions. Deuteration, the incorporation of stable heavy isotopes like deuterium, can affect the pharmacokinetic and metabolic profiles of drugs.
- Used as a tracer for quantitative analysis.
- Functions as an internal standard for NMR, GC-MS, or LC-MS.
- Suitable for research on inflammatory conditions.
- Can be used in prodrug development targeting specific tissues.
Cambridge Isotope Laboratories 21-DEOXYCORTISOL (2,2,4,6,6,21,21,21-D8, 97%), 0.01 G
21-DEOXYCORTISOL (2,2,4,6,6,21,21,21-D8, 97%), 0.01 G
Medchemexpress LLC Butyl parahydroxybenzoate-d4 | 1219798-67-0 | 98.6% | 198.25 g/mol | C11H10D4O3 | 10 MG
Butylparaben-d4 is the deuterium-labeled analog of butylparaben (n-butyl 4-hydroxybenzoate), provided as a solid stable-isotope reference standard for analytical and research use. It offers a mass-shifted internal standard for accurate quantitative mass spectrometry and tracer experiments, with high reported purity.
- Deuterium-labeled (d4) material for mass spectrometry internal standard use.
- High purity suitable for quantitative analysis and method development.
- Available in small milligram pack sizes for reference standards.
- Solid form with typical stability for storage and handling.
- Includes CAS number 1219798-67-0 for unambiguous identification.
Medchemexpress LLC 2-aminofluorene-d11 | 347841-44-5 | 99.0% | 192.3 g/mol | C13D11N | 10 MG
2-Aminofluorene-d11 is the deuterium-labeled analogue of 2-aminofluorene used as an isotopically labeled internal standard and tracer in analytical and research workflows. It has chemical formula C13D11N, molecular weight 192.3 g/mol, and is associated with CAS number 347841-44-5.
- Deuterium-labeled (d11) for accurate isotope-dilution quantitation.
- High chemical purity (99.0% by HPLC) for analytical reliability.
- High isotopic enrichment (~98% D) to ensure a clear mass shift in MS analyses.
- Available in small milligram quantities suitable for method development and internal standard use.
- Suitable for LC-MS/MS, isotope-dilution assays, and tracer studies.
Medchemexpress LLC Arachidic acid-d4 | 1219803-69-6 | 316.56 | 5 MG
Arachidic acid-d4 is a deuterium-labeled version of Arachidic acid (Eicosanoic acid), a long-chain saturated fatty acid found in human plasma phospholipid, fish, cannabis, and other plant oils.
- Can be used as a tracer
- Can be used as an internal standard for quantitative analysis by NMR, GC-MS, or LC-MS
- Deuteration can affect pharmacokinetic and metabolic profiles of drugs
- Conjugated with Chitosan oligosaccharide, it can be used in anti-cancer drug delivery research
Cayman Chemical Prnoprofen-13C-d3 5mg
An internal standard for the quantification of pranoprofen by GC- or LC-MS
Medchemexpress LLC D-Fructose-13C2 | 2483736-14-5 | 5 MG
D-Fructose-13C2 is the 13C labeled D-Fructose. D-Fructose (D(-)-Fructose) is a naturally occurring monosaccharide found in many plants. This product is for research use only and not sold to patients.
- Can be used as a tracer.
- Can be used as an internal standard for quantitative analysis by NMR, GC-MS, or LC-MS.
- Stable heavy isotopes of hydrogen, carbon, and other elements have been incorporated into drug molecules for quantitation during drug development.
- Deuteration can affect the pharmacokinetic and metabolic profiles of drugs.
Medchemexpress LLC L-Tryptophan-d5 | 62595-11-3 | 209.26 | 25 MG
L-Tryptophan-d5 is a deuterium-labeled form of L-Tryptophan, an essential amino acid and a precursor to serotonin, melatonin, and vitamin B3. 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.
- Has a purity of 99.86% to 99.94%.
- Contains deuterium, which can affect pharmacokinetic and metabolic profiles of drugs.
- Appears as a solid with a yellow to orange color.
- Store at 4°C, protected from light, under nitrogen.
- For solutions, store at -80°C for 6 months or -20°C for 1 month, protected from light, under nitrogen.
Cambridge Isotope Laboratories HEPTADECANOIC ACID (D33, 98%), 0.5 G, 352431-41-5
HEPTADECANOIC ACID (D33, 98%), 0.5 G, 352431-41-5