Isotopically Labeled Compounds
Medchemexpress LLC Glycolithocholic aci 5mg | 474-74-8 | 433.62 g·mol⁻¹ | C26H43NO4 | 5 MG
Glycolithocholic acid is a glycine-conjugated secondary bile acid and endogenous metabolite used as a research reagent and analytical standard for studies of bile acid metabolism and related diseases. It is applied in diagnostic and biochemical research, including investigations of ulcerative colitis, non-alcoholic steatohepatitis, and primary sclerosing cholangitis.
- High purity analytical standard (99.90%).
- Molecular formula C26H43NO4; molecular weight 433.62 g·mol⁻¹.
- Available in small pack sizes suitable for analytical and research workflows.
- Soluble in DMSO; recommended storage at -20 °C for long term.
- Used in metabolic profiling, diagnostic assays, and bile acid research.
Medchemexpress LLC N6-(carboxymethyl)-L-lysine-d3 | 2699607-49-1 | 99.0% | 207.24 | C8H13D3N2O4 | 1 MG
CML-d3 is a deuterium-labeled stable isotope standard of carboxymethyl-lysine designed for use as a tracer or internal standard in analytical workflows such as mass spectrometry and quantitative biochemical assays. It is supplied as a powder with supporting documentation for analytical use and safe handling.
Medchemexpress LLC Amisulpride-d5 | 1216626-17-3 | 98.8% | C17H22D5N3O4S | 10MG
Amisulpride-d5 is the deuterium-labeled analogue of amisulpride used as a tracer and internal standard for quantitative analysis by NMR, GC-MS, and LC-MS. Supplied as a high-purity deuterated solid, it is intended for analytical and research applications where accurate quantitation is required.
- Deuterium-labeled internal standard for mass spectrometry and NMR.
- High deuteration purity (≈98.8%) for reliable quantitation.
- Suitable as tracer and internal standard in bioanalytical assays.
- Supplied as a 10 mg solid for small-scale analyses.
- Molecular formula C17H22D5N3O4S; molecular weight 374.51 g/mol.
Medchemexpress LLC Glycine-d3 | 4896-76-8 | 100.0% | 78.09 g/mol | C2H2D3NO2 | 10mg
Glycine-d3 is the deuterium labeled Glycine Glycine is an inhibitory neurotransmitter in the CNS and also acts as a co-agonist along with glutamate facilitating an excitatory potential at the glutaminergic N-methyl-D-aspartic acid (NMDA) receptors
Medchemexpress LLC Acetophenone-13C | 71777-36-1 | MFCD00064444 | 99.0% | 121.14 | C7(13C)H8O | 10mg
Acetophenone-13C is the 13C labeled Acetophenone[1] Acetophenone is an organic compound with simple structure[2]
Medchemexpress LLC Aprepitant-d4 5mg | 1133387-60-6 | 538.45 | C23H17D4F7N4O3 | 5 MG
Aprepitant-d4 is the deuterium-labeled analogue of aprepitant, supplied as a powder and intended for use as a stable isotope internal standard in research and analytical laboratories, particularly for LC-MS quantitation.
- Deuterium-labeled internal standard for quantitative LC-MS assays.
- High chemical purity (99.0%).
- Suitable molecular weight and isotopic composition for sensitive detection (MW 538.45).
- Supplied as a stable powder with recommended storage at -20°C for long-term stability.
- High solubility in DMSO (100 mg/mL); warming and sonication recommended.
Medchemexpress LLC Amisulpride-d5 | 1216626-17-3 | 98.8% | 374.51 | C17H22D5N3O4S | 5 MG
Amisulpride-d5 is the deuterium-labeled form of amisulpride intended for research use as a tracer or internal standard. It maintains the pharmacological profile as a dopamine D2/D3 receptor antagonist and is provided as a white to off-white solid suitable for quantitative analyses by NMR, GC-MS, or LC-MS.
- Deuterium-labeled for isotope-dilution assays.
- Suitable as an internal standard for NMR, GC-MS, and LC-MS.
- High purity (≈98.8%) appropriate for analytical applications.
- Soluble in DMSO and sparingly soluble in water; ultrasonic assistance recommended.
- Stable as a powder at -20°C for long-term storage.
Medchemexpress LLC Phenylmethan-d2-ol | 21175-64-4 | MFCD00084124 | 99.0% | 110.15 g/mol | C7H6D2O | 100 MG
Phenylmethan-d2-ol is the deuterium-labeled form of phenylmethanol (benzyl alcohol) used as a stable isotope reagent in analytical and synthetic chemistry. It is provided in small laboratory pack sizes for use in tracer studies, method development, and isotopic labeling workflows.
- Deuterium-labeled benzyl alcohol for tracer and standard applications.
- High chemical purity and isotopic labeling (99.0%).
- Available in small milligram pack sizes suitable for analytical workflows.
- Suitable as an internal standard for mass spectrometry and quantitative analysis.
- Compatible with standard organic synthesis and labeling procedures.
Medchemexpress LLC Maleic acid-d2 (Maleic-2,3-d2 acid) | 24461-33-4 | 99.3% | 118.08 g·mol⁻¹ | C4H2D2O4 | 25mg
Maleic Acid-d2 is the deuterium labeled Maleic Acid[1] Maleic Acid is a Glutamate Decarboxylase (GAD) inhibitor of E coli and L monocytogenes[2][3]
Medchemexpress LLC Urea-d4 | 1433-11-0 | MFCD00044227 | 100.0% | 64.08 g·mol^-1 | CD4N2O | 5g
Urea-d4 is the deuterium labeled Urea[1] Urea is a powerful protein denaturant via both direct and indirect mechanisms[2] A potent emollient and keratolytic agent[3] Used as a diuretic agent Blood urea nitrogen (BUN) has been utilized to evaluate renal function[4] Widely used in fertilizers as a source of nitrogen and is an important raw material for the chemical industry
Medchemexpress LLC 4-amino-exatecan-d5 | 00-00-0 | 98.6% | C23H16D5N3O4 | 10MG
(4-NH2)-Exatecan-d5 is the deuterium-labeled form of (4-amino) exatecan, a topoisomerase inhibitor derivative of exatecan intended for research use. It is commonly used as a building block in antibody-drug conjugate synthesis and as a labeled tracer or internal standard for quantitative analytical methods.
- Deuterium-labeled analog for analytical studies.
- Suitable for synthesis of antibody-drug conjugates.
- Usable as tracer or internal standard for NMR, GC-MS, and LC-MS.
- High purity (98.6%) for reproducible results.
- Molecular formula C23H16D5N3O4; molecular weight 408.46.