Isotopically Labeled Compounds
Medchemexpress LLC Acetophenone-13C | 71777-36-1 | MFCD00064444 | 99.0% | 121.14 | C713CH8O | 25mg
Acetophenone-13C is the 13C labeled Acetophenone[1] Acetophenone is an organic compound with simple structure[2]
Cambridge Isotope Laboratories CYTIDINE 5'-TRIPHOSPHATE (CTP), AMMONIUM SALT (5-D1,RIBOSE-3',4',5',5''-D4,97%)CP >90% (IN SOLN), 50 UMOL
CYTIDINE 5'-TRIPHOSPHATE (CTP), AMMONIUM SALT (5-D1,RIBOSE-3',4',5',5''-D4,97%)CP >90% (IN SOLN), 50 UMOL
Medchemexpress LLC Acetic acid-1-13c | 1563-79-7 | MFCD00037366 | 100.0% | 61.06 g/mol | CH3 13CO2H | 50mg
Acetic acid-1-13C is 13C labeled Acetic acid-1
Medchemexpress LLC 1,2,4,5-tetradeuterio-3-fluoro-6-nitrobenzene | 1219802-01-3 | 25mg
NSC 10281-d4 is the deuterium labeled NSC 10281[1]
Medchemexpress LLC Methionine-d3 | 284665-18-5 | MFCD00211078 | 99.2% | C5H8D3NO2S | 10MG
Methionine-d3 is a deuterium-labeled form of the amino acid methionine provided as a white to off-white solid. It serves as a stable-isotope internal standard for mass spectrometry, tracer studies, and analytical workflows requiring an isotopically labeled amino acid. The material offers high purity and defined storage stability, and is supplied in small milligram quantities for laboratory use.
- High purity (99.2%).
- Deuterium-labeled methyl group for mass-shifted internal standardization.
- Suitable for mass spectrometry and tracer studies.
- White to off-white solid form for easy handling and weighing.
- Stable when stored under recommended conditions for reliable performance.
Medchemexpress LLC 1,6-anhydro-β-D-glucopyranose-d7 | 2483832-05-7 | 99.9% | 169.18 g/mol | C6H3D7O5 | 5 MG
Levoglucosan-d7 is the deuterium-labeled isotopologue of levoglucosan intended for research and analytical applications, commonly used as an internal standard in mass spectrometry assays.
- deuterium-labeled levoglucosan (stable isotope standard)
- intended for research and analytical applications, such as internal standard use in mass spectrometry
- cas number 2483832-05-7
- molecular formula C6H3D7O5
- molecular weight 169.18 g/mol
- purity 99.9%
- package size 5 mg
- storage: powder -20 °C (3 years), 4 °C (2 years); in solvent -80 °C (6 months), -20 °C (1 month)
Medchemexpress LLC Ethyl cinnamate-d5 | 856765-68-9 | 99.7% | 181.24 g/mol | C11H7D5O2 | 10mg
Ethyl cinnamate-d5 is the deuterium labeled Ethyl cinnamate[1] Ethyl cinnamate is a fragrance ingredient used in many fragrance compounds Ethyl cinnamate is a food flavor and additive for cosmetic products Ethyl cinnamate is also an excellent clearing reagent for mammalian tissues[2][3]
Selleck Chemical LLC Heptadecanoic acid S3336-25mg
Heptadecanoic acid (C17 0) an odd chain saturated fatty acid significantly inhibits cell proliferation and migration while promoting apoptosis in PC 9 and PC 9/GR cells Heptadecanoic acid is associated with several diseases including the incidence of coronary heart disease prediabetes and type 2 diabetes as well as multiple sclerosis
Cambridge Isotope Laboratories Modified JIS PCB Alt A Extended Calibration Solution (CS3H) 0 2 mL
Modified JIS PCB Alt A Extended Calibration Solution (CS3H) 0 2 mL
Medchemexpress LLC Xanthine-13C,15N2 | 1262670-81-4 | >98.0% | 155.09 | C413CH4N215N2O2 | 1 MG
Xanthine-13C,15N2 is a stable isotope-labeled xanthine supplied for research use as an internal standard, tracer, or for metabolic and mass spectrometry studies. It carries one 13C and two 15N labels and is provided as a dry powder suitable for analytical workflows.
- Contains 13C and 15N stable isotope labels.
- Suitable as an internal standard for LC-MS and tracer studies.
- High reported purity (≥98.0%).
- Soluble in water and 1 M NaOH under recommended conditions.
- Supplied in small milligram pack sizes for analytical applications.
Cayman Chemical NoscapIn-13C-d3 1mg
An internal standard for the quantification of noscapine by GC- or LC-MS
Medchemexpress LLC Difelikefalin-d5 hydrochloride (CR-845-d5 hydrochloride) | 1024828-77-0 | 97.6% | 794.26 | 1 MG
Difelikefalin-d5 (CR-845-d5) hydrochloride is the deuterium-labeled Difelikefalin. It acts as a peripherally restricted and selective agonist of the kappa opioid receptor (KOR), demonstrating anti-inflammatory effects and potentially modulating pruritus in conditions such as chronic kidney disease.
- 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 Uridine-13C9, 15N2 | 202406-84-6 | MFCD01073444 | 99.0% | 255.12 | 13C9H12 15N2O6 | 1mg
Uridine-13C9 15N2 ( -Uridine-13C9 15N2) is 13C and 15N labeled Uridine (HY-B1449) Uridine is a glycosylated pyrimidine-analog containing uracil attached to a ribose ring (or more specifically aribofuranose) via a -N1-glycosidic bond[1]
![Medchemexpress LLC 5Z-[(2E)-2-methyl-3-phenyl-d5-2-propen-1-ylidene]-4-oxo-2-thioxo-3-thiazolidineacetic acid | 2755644-33-6 | >99.0% | 324.4 g·mol⁻1 | C15H8D5NO3S2 | 5 MG](https://assets.fishersci.com/TFS-Assets/CCG/product-images/5000284443.png-250.jpg)
Medchemexpress LLC 5Z-[(2E)-2-methyl-3-phenyl-d5-2-propen-1-ylidene]-4-oxo-2-thioxo-3-thiazolidineacetic acid | 2755644-33-6 | >99.0% | 324.4 g·mol⁻1 | C15H8D5NO3S2 | 5 MG
Epalrestat-d5 is a deuterium-labeled (d5) analogue of epalrestat supplied as a solid reference standard for analytical use. It is intended as an internal standard for quantitative GC- or LC-MS assays, providing high isotopic purity and consistent mass for accurate measurements.
- Designed as an internal standard for GC- or LC-MS quantification.
- Deuterium-labeled (d5) isotopologue for clear mass separation from the parent compound.
- High deuteration purity to minimize isotopic interference in assays.
- Slightly soluble in DMSO and methanol for use in common assay solvents.
- Well characterized molecular formula C15H8D5NO3S2 and formula weight 324.4 g·mol⁻1.
Cayman Chemical DabIgatrn-d3 500ug
An internal standard for the quantification of dabigatran by GC- or LC-MS