Isotopically Labeled Compounds
Medchemexpress LLC 8-hydroxy-5-nitroquinoline-d4 | 4008-48-4 | MFCD00006791 | 194.18 | C9H2D4N2O3 | 10 MG
Nitroxoline-d4 (8-hydroxy-5-nitroquinoline-d4) is the deuterated isotopologue of nitroxoline provided as a reference standard for research and analytical applications. It is used as an internal standard in mass spectrometry and in studies of nitroxoline's antibiofilm and metal-chelating activity.
- Deuterated internal standard for analytical assays
- Suitable for mass spectrometry quantitation and method development
- Supports antibiofilm and antimicrobial research applications
- High isotopic labeling minimizes overlap with native analyte
- Molecular formula C9H2D4N2O3, molecular weight 194.18
Medchemexpress LLC Daunorubicin-13C,d3 | 20830-81-3 | MFCD00866340 | 98.0% | 531.53 | C2613CH26D3NO10 | 250 UG
Isotopically labeled daunorubicin (13C and d3) supplied as a low-quantity analytical standard for research use. It is intended for use as an internal standard and tracer in mass spectrometry, pharmacokinetic, metabolic, and mechanistic studies involving topoisomerase II inhibitors.
- Isotopically labeled with 13C and d3 for unambiguous mass-spectrometry detection.
- Suitable as an internal standard for LC-MS quantitation and method development.
- Appropriate for pharmacokinetic and metabolic tracing studies.
- Provided in a small 250 μg amount to support high-sensitivity assays.
- Documentation available; certificate of analysis provides purity and handling information.
Medchemexpress LLC Oxybenzone-d3 (benzophenone 3-d3) | 131-57-7 | MFCD00008387 | >95.0% | 231.26 g/mol | C14H9D3O3 | 2.5 MG
Oxybenzone-d3 (benzophenone 3-d3) is a deuterium-labeled stable isotope standard of oxybenzone intended for analytical and research use. Provided as a 2.5 mg solid, it serves as an internal standard for mass spectrometry, method development, and quantitation in environmental and cosmetic residue analysis.
- Deuterium-labeled internal standard for mass spectrometry.
- Supplied as a 2.5 mg solid suitable for analytical use.
- Chemical formula C14H9D3O3; molecular weight 231.26 g/mol.
- Used for calibration, quantitation, and method validation.
- Typically accompanied by vendor documentation such as a certificate of analysis.
Medchemexpress LLC Oxaprozin-d4 | 21256-18-8 | MFCD00215977 | 99.1% | 297.34 g·mol^-1 | C18H11D4NO3 | 10 MG
Oxaprozin-d4 is the deuterium-labeled isotopologue of oxaprozin (d4), a non-steroidal anti-inflammatory drug and cyclooxygenase (COX) inhibitor supplied as a solid research reagent. It is intended for research use only and is commonly used as an internal standard or tracer in analytical and pharmacokinetic studies.
- Deuterium-labeled oxaprozin for tracer and quantitative analysis.
- Supplied as a 10 mg solid suitable for analytical workflows.
- High purity (approximately 99.1%) to minimize analytical interference.
- Chemical formula C18H11D4NO3 and molecular weight 297.34 g·mol^-1.
- Stable when stored as recommended: powder at -20°C for long-term storage.
Medchemexpress LLC Nadolol-d9 (SQ-11725-d9) | 94513-92-5 | 97.0% | 318.46 | C17H18D9NO4 | 10 MG
Nadolol-d9 is the deuterium-labeled analog of nadolol, a non-selective, orally active β-adrenergic receptor blocker used for analytical and research applications as a tracer or internal standard.
- Deuterium-labeled internal standard for quantitative analysis by NMR, GC-MS, and LC-MS.
- Non-selective β-adrenergic receptor blocker analog suitable for tracer and pharmacokinetic studies.
- High purity (97.0%) for reliable analytical performance.
- Molecular formula C17H18D9NO4 and molecular weight 318.46 g/mol.
- Off-white to light yellow solid appearance.
- Storage: powder at -20°C (3 years) or 4°C (2 years); in solvent at -80°C (6 months) or -20°C (1 month).
- Available in small analytical quantities, including 10 mg packs.
Medchemexpress LLC Demethoxycurcumin-d4 | 22608-11-3 | MFCD03427310 | 98.9% | 342.38 g/mol | C20H14D4O5 | 10 MG
Demethoxycurcumin-d4 is the deuterium-labeled analog of demethoxycurcumin used as an isotopically labeled reference standard in biochemical and pharmacological research. It is suitable for use as an internal standard in mass spectrometry, tracer studies, and quantitative assays where a stable isotope label improves accuracy and reduces matrix effects.
- Isotopically labeled internal standard for quantitation.
- High reported purity suitable for analytical applications.
- Soluble in DMSO at high concentration with ultrasonic aid.
- Stable when stored as powder at recommended temperatures.
- Useful in studies of inflammation, apoptosis, and metabolic profiling.
Medchemexpress LLC Tris(hydroxymethyl)aminomethane-d11 (for molecular biology) | 202656-13-1 | 99.9% | 50 MG
THAM-d11 (for molecular biology) is the deuterium labeled Trometamol(Tris), for molecular biology. This compound is suitable for use as a tracer or an internal standard for quantitative analysis by NMR, GC-MS, or LC-MS.
- 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 Tryptamine-d4 hydrochloride | 340257-60-5 | 99.53% | 1 MG
Tryptamine-d4 (hydrochloride) is the deuterium labeled Tryptamine hydrochloride. Tryptamine hydrochloride, a monoamine alkaloid, similar to other trace amines, is believed to play a role as a neuromodulator or neurotransmitter.
- This compound can be used as a tracer.
- This compound 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, largely as tracers for quantitation during the drug development process.
- Deuteration has gained attention because of its potential to affect the pharmacokinetic and metabolic profiles of drugs.
Sigma Aldrich Fine Chemicals Biosciences D-Glucose-6-13C 99 atom % 13C | 106032-62-6 | MFCD00148979 | 100MG
D-Glucose-6-13C 99 atom % 13C | Purity: 99% (CP) | Mol Wt: 181.15 | 106032-62-6 | MFCD00148979 | 100MG
Medchemexpress LLC 2-Methyl-N,N-bis(methyl-d3)-3-(10H-phenothiazin-10-yl)propan-1-amine | 1346603-88-0 | 99.6% | 1 MG
Alimemazine-d6 is a deuterium-labeled form of Alimemazine, an antihistamine. It is intended for research use only and can serve as a tracer or an internal standard for quantitative analysis methods such as NMR, GC-MS, or LC-MS.
- Research use only compound
- Functions as a tracer in various studies
- Suitable as an internal standard for quantitative analysis (NMR, GC-MS, LC-MS)
- Deuterium labeled compound
- Related to isotope-labeled compounds and internal standards for clinical mass spectrometry
- Relevant for neurological, eye or ear disease, and inflammation or immune system disease research
Medchemexpress LLC Nateglinide-d5 | 1227666-13-8 | 98.0% | 5 MG
Nateglinide-d5 is a deuterium-labeled derivative of Nateglinide, a D-phenylalanine derivative. Nateglinide acts as an orally active and short-acting insulinotropic agent and a DPP IV inhibitor. It inhibits ATP-sensitive K+ channels in pancreatic β-cells and is used in the treatment of type 2 (non-insulin-dependent) diabetes mellitus.
- Can be used as a tracer
- Functions as an internal standard for quantitative analysis methods such as NMR, GC-MS, or LC-MS
Medchemexpress LLC Pentoxifylline-d6 | 1185878-98-1 | 99.0% | 5 MG
Pentoxifylline-d6 | 1185878-98-1 | 99.0% | 5 MG
Cayman Chemical FluvoxamIn-d4maleate 500ug
An internal standard for the quantification of fluvoxamine by GC- or LC-MS
Medchemexpress LLC Sulfathiazole-d4 | 1020719-89-4 | 99.9% | 5 MG
Sulfathiazole-d4 is a deuterium labeled Sulfathiazole. Sulfathiazole is an orally active, endocrine disruptor targeting the steroidogenic pathway, specifically enhancing the activity of CYP19 in human adrenal cancer cells (H295R) and upregulating the mRNA expression of CYP17, CYP19, and 3β-HSD. It increases the production of 17-estradiol (E2) and has endocrine disrupting effects on aquatic organisms such as the Japanese medaka fish.
- Can be used as a tracer
- Can be used as an internal standard for quantitative analysis by NMR, GC-MS, or LC-MS
- Enhances the activity of CYP19 in human adrenal cancer cells (H295R)
- Upregulates the mRNA expression of CYP17, CYP19, and 3β-HSD
- Increases the production of 17-estradiol (E2)
- Has endocrine disrupting effects on aquatic organisms such as the Japanese medaka fish