Isotopically Labeled Compounds
Medchemexpress LLC Paraxanthine-d6 | 117490-41-2 | 98.9% | 186.20 g/mol | C7H2D6N4O2 | 5 MG
Paraxanthine-d6 is the deuterium-labeled isotopologue of paraxanthine, supplied for research use as a stable isotope tracer and analytical reference. It is intended for mass spectrometry, metabolic tracing, and pharmacokinetic studies, providing an isotopically labeled standard for accurate quantitation and identification.
- Deuterium-labeled isotopologue for tracer and reference use.
- Suitable for mass spectrometry quantitation and method development.
- Useful in metabolic tracing and pharmacokinetic studies.
- High chemical purity suitable for analytical applications.
- Available in small, precisely weighed quantities for research workflows.
Medchemexpress LLC Diphenhydramine-d5 hydrochloride | 1219795-16-0 | 99.8% | 5 MG
Diphenhydramine-d5 hydrochloride is a deuterium-labeled Diphenhydramine hydrochloride. It is a first-generation histamine H1-receptor antagonist with anti-cholinergic effects and can cross the ovine blood-brain barrier (BBB). This compound is intended for research use only.
- Deuterium labeled Diphenhydramine hydrochloride
- 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 D-ribose-d2 | 478506-32-0 | MFCD08459971 | 98.0% | 152.14 g/mol | C5H8D2O5 | 100 MG
D-ribose-d2 is a deuterium-labeled analogue of D-ribose (C5H8D2O5) provided for laboratory research. It supplies two deuterium atoms in the ribose moiety and is intended for tracer experiments, metabolic labeling, and analytical chemistry applications where stable-isotope incorporation aids detection and quantification.
- Deuterium-labeled ribose for tracer and metabolic studies.
- Facilitates detection and quantification by mass spectrometry.
- Molecular formula C5H8D2O5; molecular weight 152.14 g/mol.
- High purity (98.0%) suitable for analytical use.
- Supplied in research-scale packaging (100 mg vial).
Cambridge Isotope Laboratories 3% Chloroform 0 2% TMS in acetone-D6 1 5mm tube
3% Chloroform 0 2% TMS in acetone-D6 1 5mm tube
Cambridge Isotope Laboratories ACETYL CHLORIDE (1,2-13C2, 99%), 1 G, 89186-79-8
ACETYL CHLORIDE (1,2-13C2, 99%), 1 G, 89186-79-8
Cambridge Isotope Laboratories D-RIBOSE (1-13C, 99%), 0.5 G, 70849-24-0
D-RIBOSE (1-13C, 99%), 0.5 G, 70849-24-0
Cambridge Isotope Laboratories 1-BROMOPENTANE (METHYL-D3, 98%), 1 G
1-BROMOPENTANE (METHYL-D3, 98%), 1 G
Medchemexpress LLC Acetamide-d5 | 33675-83-1 | MFCD00190374 | 98.9% | 64.10 | C2D5NO | 5mg
Acetamide-d5 is the deuterium labeled Acetamide[1] Acetamide is used as an intermediate in the synthesis of methylamine thioacetamide and insecticides and as a plasticizer in leather cloth and coatings Acetamide has carcinogenicity[2][3]
Cayman Chemical Fulvestrant-d3, Purity: ≥99% deuterated forms (d1-d3), 1 mg
An internal standard for the quantification of fulvestrant by GC- or LC-MS
Revvity Health Sciences Inc Internal Standard Kit, 14C-O for organic samples
Internal Standard Kit, 14C-O for organic samples
Medchemexpress LLC L-lysine-d9 hydrochloride | 2708343-64-8 | 99.1% | 191.70 g/mol | C6H6D9ClN2O2 | 10 MG
L-Lysine-d9 hydrochloride is a deuterium-labeled form of the essential amino acid L-lysine, presented as the hydrochloride salt and intended for use as an internal standard, tracer, or reference material in mass spectrometry and metabolomics workflows.
- Deuterium-labeled internal standard for LC-MS and metabolomics.
- Purity approximately 99.0% (batch example 99.09%).
- Molecular formula: C6H6D9ClN2O2.
- Molecular weight: 191.70 g/mol.
- Appearance: white to off-white solid.
- Typical package: 10 MG; other sizes available.
Medchemexpress LLC Protionamide-d7 | 2468639-68-9 | 97.2% | 187.31 g/mol | C9H5D7N2S | 1 MG
Protionamide-d7 is a deuterium-labeled analogue of prothionamide provided as a small research sample for use in analytical and biological studies. It is intended for use as an isotopically labeled standard or tracer in mass spectrometry and metabolic investigations into mycobacterial activity.
- Deuterium-labeled prothionamide for research applications.
- Suitable as an internal standard or tracer in mass spectrometry.
- CAS number 2468639-68-9 and formula C9H5D7N2S.
- Molecular weight 187.31 g/mol.
- Pack size 1 mg with reported purity approximately 97.2%.
Medchemexpress LLC Alogliptin-d3 (free base) | 1133421-35-8 | 99.6% | 342.41 g/mol | C18H18D3N5O2 | 10 MG
A deuterium-labeled analog of alogliptin supplied for research use as a tracer or internal standard in quantitative analytical methods such as NMR, GC-MS, and LC-MS. It is intended for laboratory research and not for human use.
- Deuterium-labeled tracer suitable for quantitative analysis.
- High purity (99.6%).
- Molecular weight 342.41 g/mol.
- Supplied as a 10 mg solid, white to off-white.
- Soluble in DMSO (100 mg/mL) and H2O (10 mg/mL) with ultrasonic or warming assistance.
- Recommended storage: powder -20°C up to 3 years; in solvent -80°C up to 6 months.
Medchemexpress LLC Ethephon-d4 | 1020719-29-2 | >98.0% | 148.52 g/mol | C2H2D4ClO3P | 5 MG
Ethephon-d4 is the deuterium-labeled analogue of ethephon supplied as a stable-isotope reference material for tracer and quantitative analytical applications. It is provided as a white to off-white solid suitable for use as an internal standard in laboratory workflows, with storage and handling recommendations for low-temperature, sealed conditions.
- Deuterium-labeled internal standard for quantitative analysis.
- Suitable for NMR, GC-MS, and LC-MS methods.
- White to off-white solid, easy to handle.
- High isotopic enrichment and chemical purity (>98.0%).
- Supplied in pre-weighed milligram quantities for analytical use.
Cayman Chemical Mepivacaine-d3, Purity: ≥99% deuterated forms (d1-d3), CAS: 1346597-90-7, 1 mg
An internal standard for the quantification of mepivacaine by GC- or LC-MS