Isotopically Labeled Compounds
Medchemexpress LLC 6-mercaptopurine-13C,15N2 hydrochloride | 207729-57-5 | 99.9% | 191.62 | C_4_^13^CH_5_ClN_2_^15^N_2_S | 1 MG
6-Mercaptopurine-13C,15N2 hydrochloride is a stable isotope-labeled form of 6-mercaptopurine supplied as the hydrochloride salt for use as a tracer and internal standard in quantitative analytical methods. It is intended for NMR, GC-MS, and LC-MS workflows where isotopic labeling improves measurement accuracy.
- Stable isotope-labeled 6-mercaptopurine hydrochloride, 13C and 15N labeled.
- Suitable as a tracer and internal standard for NMR, GC-MS, and LC-MS.
- High purity (≈99.9%), appropriate for quantitative analysis.
- Supplied in small mg quantities for analytical use; store under nitrogen, away from moisture.
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 Dl-dithiothreitol-d6 | 850153-85-4 | MFCD00042404 | 99.0% | 160.29 g·mol-1 | C4H4D6O2S2 | 10 MG
DL-dithiothreitol-d6 (DTT-d6) is the deuterated analogue of DL-dithiothreitol, used as a reducing agent to cleave disulfide bonds and as an isotopic internal standard in analytical and mass spectrometry applications.
- Deuterated (d6) analogue suitable for mass spectrometry and isotopic labeling applications.
- High chemical purity: 99.0%.
- Molecular formula C4H4D6O2S2 and molecular weight 160.29 g·mol-1.
- Used to reduce disulfide bonds in protein and sample preparation workflows.
- Available in 10 mg pack size for analytical use.
Sigma Aldrich Fine Chemicals Biosciences Citric acid-2,4-13C2 99 atom % 13C | 121633-50-9 | MFCD00143997 | 100MG
Citric acid-2,4-13C2 99 atom % 13C | Mol Wt: 194.11 | 121633-50-9 | MFCD00143997 | 100MG
Sigma Aldrich Fine Chemicals Biosciences Eicosanoic-d39 Acid 98 atom % D, 97% (CP) | 39756-32-6 | MFCD00143629 | 250MG
Eicosanoic-d39 Acid 98 atom % D, 97% (CP) | Purity: 97% (CP) | Mol Wt: 351.77 | 39756-32-6 | MFCD00143629 | 250MG
Sigma Aldrich Fine Chemicals Biosciences Hexachlorobenzene-13C6 >=99 atom % 13C, 99% | 93952-14-8 | MFCD00144438 | 10MG
Hexachlorobenzene-13C6 >=99 atom % 13C, 99% | Purity: 99% | Mol Wt: 290.74 | 93952-14-8 | MFCD00144438 | 10MG
Medchemexpress LLC 5'-Guanylic acid-15N5 dilithium | 85-32-5 | 1 MG
5'-Guanylic acid-15N5 dilithium is a 15N labeled 5'-Guanylic acid. It is involved in several metabolic disorders, such as the AICA-ribosiduria pathway, adenosine deaminase deficiency, adenine phosphoribosyltransferase deficiency (APRT), and the 2-hydroxyglutric aciduria pathway. It 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
- Stable heavy isotopes for quantitation during drug development
Medchemexpress LLC Nonadecane | 629-92-5 | 100 MG
Nonadecane is a herbicide used for the control of weeds in Dendrobium orchids. This product is provided as a colorless to off-white solid.
- Purity: 98.0%
- Molecular weight: 268.52
- Chemical formula: C19H40
- Appearance: Solid
- Color: Colorless to off-white
- Shipping: Room temperature in continental US; may vary elsewhere
- Powder storage: -20°C for 3 years, 4°C for 2 years
- In solvent storage: -80°C for 6 months, -20°C for 1 month
- Solubility in ethanol: 20 mg/mL (74.48 mM)
Medchemexpress LLC Florfenicol amine-d3 | 3023974-39-9 | >=98.0% | 250.30 g/mol | C10H11D3FNO3S | 1 MG
Florfenicol amine-d3 is a deuterium-labeled (d3) analogue of florfenicol amine supplied as a laboratory reference standard for analytical testing. It is intended for research use and for quantitative method development using mass spectrometry.
- Deuterium-labeled internal standard for florfenicol amine.
- Intended for research use only; not for human or clinical applications.
- Suitable for quantitative mass spectrometry and method development.
- High isotopic enrichment (d3) to improve analytical accuracy.
- Supplied as a solid reference material; handle according to the safety data sheet.
- Available in 1 mg, 5 mg, 10 mg packages.
Medchemexpress LLC Boc-Leu-OH H2O-d3 100mg
Boc-Leu-OH H2O-d3 is the deuterium labeled Boc-Leu-OH H2O[1]
Medchemexpress LLC Azaperone-d4 | 1173021-72-1 | 1MG
Azaperone-d4 is a deuterium-labeled version of Azaperone, a dopamine antagonist that also exhibits antihistaminic and anticholinergic properties. This pyridinylpiperazine and butyrophenone neuroleptic agent is known for its antiemetic effects and is primarily used as a tranquilizer in veterinary medicine. Deuterium labeling incorporates stable heavy isotopes into drug molecules, serving as tracers for quantitation during drug development and potentially affecting pharmacokinetic and metabolic profiles.
- Deuterium labeled compound
- Dopamine antagonist
- Exhibits antihistaminic properties
- Exhibits anticholinergic properties
- Pyridinylpiperazine and butyrophenone neuroleptic agent
- Provides antiemetic effects
- Used as a tranquilizer in veterinary medicine
- Useful as a tracer for drug development
Abcam SKI-II, Sphingosine kinase (SK1/2) inhibitor, 10MG
MW 302.8 Da, Purity >98%. Sphingosine kinase (SK1/2) inhibitor (IC₅₀ values are 35 and 20 μM for SK1 and SK2 respectively). Inhibits tumor growth in vivo. Orally active.
The product is subject to the following: Abcam Restricted Use Statement
Medchemexpress LLC 1,2-dibromoethane-d4 | 22581-63-1 | MFCD00037499 | >98.0% | 191.89 g·mol⁻¹ | C2Br2D4 | 100 MG
1,2-dibromoethane-d4 is the deuterium-labeled analogue of ethylene dibromide supplied as a neat liquid for use as an isotopic reagent, internal standard, or NMR solvent in research and synthetic applications. The product has formula C2Br2D4, CAS 22581-63-1, and a molecular weight of approximately 191.89 g·mol⁻¹. It is provided with high isotopic enrichment and chemical purity for analytical reliability. For research use only, not for human consumption.
- Deuterium-labeled (d4) for isotopic tracing and NMR applications.
- High isotopic enrichment suitable for quantitative analysis.
- Chemical purity typically >98.0% to ensure analytical reliability.
- Useful as an internal standard and reagent in synthesis and spectroscopy.
- Liquid form with formula C2Br2D4 and molecular weight 191.89 g·mol⁻¹.
- Store cold (refrigerated or -20°C recommended) to preserve stability.
Medchemexpress LLC D-Fructose-d4 | 478518-49-9 | 10 MG
D-Fructose-d4 is the deuterium-labeled D-Fructose. D-Fructose is a naturally occurring monosaccharide found in many plants. It is for research use only and not for sale to patients.
- Stable isotope
- Can be used as a tracer
- Can be used as an internal standard for quantitative analysis by NMR, GC-MS, or LC-MS
- Deuteration may affect pharmacokinetic and metabolic profiles of drugs
- Purity of 99.9%
Medchemexpress LLC Nizatidine-d3 | 1246833-99-7 | MFCD32641299 | 98.8% | 334.48 | C12H18D3N5O2S2 | 10 MG
Nizatidine-d3 is the deuterium-labeled form of nizatidine supplied as an isotope-labeled reference standard for research applications, including mass spectrometry, pharmacokinetic, and metabolic studies. It is intended for use as a labeled internal standard to support quantitative analytical workflows.
- Deuterium-labeled internal standard for mass spectrometry assays.
- High chemical purity: 98.8%.
- CAS number 1246833-99-7 for unambiguous identification.
- Available in small-mass packaged quantities suitable for analytical use.
- Useful for ADME, PK/PD, and quantitative analytical studies.