Pyrimidines And Derivatives
Medchemexpress LLC Borate(1-), (cyano-κC)trihydro-d3-, sodium (1:1), (T-4)- | 25895-62-9 | MFCD00003517 | 99.9% | 65.86 g/mol | CD3BNNa | 250mg
Sodium cyanoboronhydride-d3 is the deuterium labeled Sodium cyanoboronhydride[1]
Medchemexpress LLC Melanin probe-2 | 1285446-04-9 | 99.4% | 300.19 | 250 MG
Melanin probe-2 is a non-radioactive bromopicolinamide precursor. It is primarily used for the synthesis of 18F-Labeled Picolinamide PET probes.
- Non-radioactive bromopicolinamide precursor.
- Used for the synthesis of 18F-Labeled Picolinamide PET probes.
Medchemexpress LLC Methyl heptadecanoate-d33 | 1219804-81-5 | 317.68 | 25 MG
Methyl heptadecanoate-d33 is a deuterium-labeled form of methyl heptadecanoate, an ester derivative of heptadecanoic acid. It serves as an internal standard for the quantitative calibration of fatty acids in GC-MS analysis. Deuterium labeling is also notable for its potential to influence the pharmacokinetic and metabolic profiles of drugs.
- Used as a tracer
- Functions as an internal standard for quantitative analysis
- Suitable for NMR, GC-MS, or LC-MS applications
- Deuterium labeling can impact pharmacokinetic and metabolic profiles of drugs
Medchemexpress LLC 3-carbamoyl-1-methylpyridin-1-ium-d3 iodide | 1998140-72-9 | ≥98.0% | 267.08 | C7H6D3IN2O | 10mg
3-Carbamoyl-1-methylpyridin-1-ium-d3 (iodide) is deuterium-labeled 3-Carbamoyl-1-methylpyridin-1-ium[1]
Medchemexpress LLC Menaquinone-4 | 863-61-6 | 250 MG
Menaquinone-4 is a vitamin K that serves as a hemostatic agent and also as an adjunctive therapy for the pain associated with osteoporosis.
- Used as a hemostatic agent.
- Acts as an adjunctive therapy for osteoporosis pain.
- Available as an endogenous metabolite.
- Available in deuterium-labeled form.
- Available as an analytical standard.
- Available in 13C-labeled form.
Medchemexpress LLC Ethyl 4-isocyanatobenzoate-d4 | 98.0% | 195.21 g·mol⁻1 | C10H5D4NO3 | 25 MG
Ethyl 4-isocyanatobenzoate-d4 is a deuterium-labeled reagent supplied as a fine white to off-white solid for use as an isotopic standard or intermediate in synthetic and analytical research. The labeled compound supports isotope tracing and serves as a mass-shifted standard in quantitative analyses.
- Chemical formula: C10H5D4NO3.
- Molecular weight: 195.21 g·mol⁻1.
- Isotopic labeling: d4 with 99.7% isotopic enrichment.
- Purity: 98.0% (GC).
- Appearance: white to off-white solid.
- Storage: powder -20 °C (up to 3 years); in solvent -80 °C (6 months) or -20 °C (1 month).
- Typical pack size: 25 MG.
Medchemexpress LLC 3-Methoxybenzeneboronic acid-d3 | 2241867-05-8 | 154.98 | 250 MG
This product, 3-Methoxybenzeneboronic acid-d3, is a deuterium labeled boronic acid derivative, also known as 3-Methoxyphenylboronic acid-d3. It is designed to interact non-covalently with amino acid residues of proteins at the active site, serving as a biochemical reagent for life science research.
- Deuterium-labeled compound
- Used as a tracer for quantitative analysis
- Functions as an internal standard for analytical techniques
- Soluble in DMSO
Medchemexpress LLC Retinoic acid ethyl ester-d5 | 78995-96-7 | C22H27D5O2 | 1 MG
Retinoic acid ethyl ester-d5 is the deuterium labeled Retinoic acid ethyl ester. 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.
- Deuterium labeled
- Used as tracers for quantitation during drug development
- Affects pharmacokinetic and metabolic profiles of drugs
Medchemexpress LLC Thiamine-13C3 hydrochloride | 340.25 | 1 MG
Thiamine-13C3 hydrochloride is the 13C-labeled version of Thiamine hydrochloride, an essential micronutrient and a cofactor for numerous central metabolic enzymes. Intended for research use only, this compound is not sold to patients. It serves as a tracer and an internal standard for quantitative analysis using techniques like NMR, GC-MS, or LC-MS.
- Labeled with stable heavy isotopes for quantitation in drug development
- Used as a tracer
- Used as an internal standard for quantitative analysis
- Suitable for NMR, GC-MS, or LC-MS applications
Medchemexpress LLC 9,9-dimethylfluoren-2-amine-d7 | 2837147-38-1 | 98.1% | 216.33 g·mol-1 | C15H8D7N | 250 MG
9,9-Dimethylfluoren-2-amine-d7 is the deuterium-labeled isotopologue of 9,9-dimethylfluoren-2-amine supplied as a high-purity solid for use in analytical and research applications. The deuterium enrichment provides a clear mass shift for reliable quantitation and trace-level detection in mass spectrometry and NMR workflows.
- high-purity solid suitable for analytical use.
- deuterium labeling enables unambiguous mass differentiation from native analytes.
- compatible with NMR, GC-MS, and LC-MS workflows.
- stable tracer for quantitative and method development studies.
Medchemexpress LLC 3-maleimidobenzoic acid | 17057-07-7 | MFCD00022572 | 96.3% | 217.18 g/mol | C11H7NO4 | 250 MG
3-Maleimidobenzoic acid is a maleimide-containing reagent used as a thiol-specific protein crosslinker for conjugation to cysteine residues. Supplied as a solid for research use, it is suitable for bioconjugation workflows, linker synthesis, and protein labeling where selective thiol reactivity is required.
- Maleimide functional group for thiol-specific conjugation.
- Forms stable thioether bonds with cysteine residues.
- Solid reagent soluble in DMSO for reaction setup.
- High purity (96.3%) for reproducible results.
- Applicable to protein labeling, antibody-drug conjugates, and linker chemistry.
Medchemexpress LLC Retinoic acid ethyl ester-d5 | 78995-96-7 | 99.2% | C22H27D5O2 | 10MG
Retinoic acid ethyl ester-d5 is the deuterium-labeled isotopologue of retinoic acid ethyl ester supplied for use as an internal standard in analytical chemistry. It is intended for isotope-dilution LC-MS/MS and related workflows to enable accurate quantitation and method validation.
- Deuterium-labeled internal standard for isotope-dilution mass spectrometry.
- High isotopic enrichment to improve quantitation accuracy.
- High purity suitable for analytical workflows.
- Supplied as an oil to facilitate solution preparation.
- Stable under recommended storage conditions for consistent performance.
Medchemexpress LLC 2-Ethyl-6-methylaniline-d13 | 1219794-93-0 | 98.6% | 148.29 | 10 MG
2-Ethyl-6-methylaniline-d13 is the deuterium labeled 2-Ethyl-6-methylaniline. It is designed for research use only and not for patient use. This compound serves as a tracer and an internal standard for quantitative analysis through techniques like NMR, GC-MS, or LC-MS. Incorporating stable heavy isotopes into drug molecules, particularly deuterium, offers the potential to influence pharmacokinetic and metabolic profiles of drugs during development.
- Used as a tracer
- Functions as an internal standard for quantitative analysis by NMR, GC-MS, or LC-MS
- Deuterium labeling can impact pharmacokinetic and metabolic profiles of pharmaceuticals
Medchemexpress LLC 1,3,5-tribromobenzene-d3 | 52921-77-4 | MFCD11983526 | >=98.0% | 317.82 g/mol | C6D3Br3 | 250 MG
1,3,5-Tribromobenzene-d3 is the deuterium-labeled analogue of 1,3,5-tribromobenzene used as a tracer and internal standard in analytical chemistry. It is intended for quantitative applications where isotopic labeling improves detection and quantitation, and is supplied with documentation for safe handling and use.
- Suitable as an internal standard for NMR, GC-MS, and LC-MS.
- Approx. 99 atom % D and ≥98.0% chemical purity.
- Molecular formula C6D3Br3; molecular weight 317.82 g/mol.
- Available in small research pack sizes for laboratory use.
- Provided with a product datasheet and safety data sheet for handling information.
Medchemexpress LLC N-succinimidyl 3-(2-pyridyldithio)propionate | 68181-17-9 | MFCD00009636 | 99.1% | 312.37 g/mol | C12H12N2O4S2 | 250 MG
SPDP is a short-chain, heterobifunctional crosslinker (N-succinimidyl 3-(2-pyridyldithio)propionate) that contains an NHS ester and a pyridyldithiol group. It enables formation of a cleavable disulfide linkage between primary amines and sulfhydryls, making it suitable for reversible bioconjugation, protein labeling, and linker applications requiring reduction-sensitive release.
- Enables amine-to-sulfhydryl conjugation via NHS ester and pyridyldithiol.
- Forms cleavable disulfide bonds reducible by intracellular glutathione.
- Short spacer arm minimizes steric interference in conjugates.
- Suitable for antibody-drug conjugates and reversible protein labeling.
- Provided as a high-purity solid for biochemical reactions.