Biochemical Reagents
Medchemexpress LLC 3-methyl-L-histidine-d3 hydrochloride | MFCD00083658 | 99.7% | 208.66 | C7H9D3ClN3O2 | 10 MG
3-Methyl-L-histidine-d3 hydrochloride is a deuterium-labeled internal standard designed for accurate quantification of 3-methylhistidine in biological and food samples by LC-MS/MS. Supplied as the hydrochloride salt with high isotopic enrichment, it provides consistent recovery and reliable peak identification for metabolomics and proteolysis studies. Molecular weight 208.66; formula C7H9D3ClN3O2.
- Stable isotope-labeled internal standard (d3) for mass spectrometry.
- Hydrochloride salt form for improved stability and handling.
- High isotopic enrichment and chemical purity for accurate quantitation.
- Suitable for metabolomics, pharmacokinetics, and proteolysis assays.
- Offered in small pack sizes for analytical workflows.
Medchemexpress LLC 3-bromo-l-tyrosine | 38739-13-8 | MFCD09836116 | 98.7% | 260.09 g·mol⁻¹ | C9H10BrNO3 | 10 G
3-bromo-l-tyrosine is a brominated derivative of the amino acid l-tyrosine used as a research reagent and building block in biochemical and medicinal chemistry studies. It is supplied as a solid for laboratory research use only and is characterized by high purity, a defined molecular weight, and specified storage recommendations.
- High purity: 98.7%.
- Molecular formula: C9H10BrNO3.
- Molecular weight: 260.09 g·mol⁻¹.
- Physical form: off-white to light brown solid.
- Recommended storage: powder -20°C (3 years) or 4°C (2 years); in solvent -80°C (6 months).
- Documentation available: datasheet, certificate of analysis, and safety data sheet.
- Available in multiple pack sizes suitable for research applications.
Medchemexpress LLC Meosuc-aapm-pna | 70967-91-8 | 622.69 | 5 MG
Cathepsin G substrate is a biochemical reagent that can be used as a biological material or organic compound for life science related research.
- Functions as a biochemical reagent
- Suitable for life science research
Medchemexpress LLC 3-iodo-L-tyrosine | 70-78-0 | 307.09 | 5 G
H-Tyr(3-I)-OH is a potent and effective inhibitor of tyrosine hydroxylase. This compound serves as an intermediate in the biosynthesis of thyroid hormones and functions as a metabolite in both human and mouse biological systems.
- Potent and effective tyrosine hydroxylase inhibitor.
- Acts as an intermediate in thyroid hormone production.
- Functions as a human and mouse metabolite.
- High purity of 99.93%.
- Powder form is stable for 3 years when stored at -20°C.
- Solution form is stable for 6 months at -80°C or 1 month at -20°C.
- Shipped at room temperature within the continental US.
Medchemexpress LLC H-Thr(Me)-OH | 4144-02-9 | 133.15 | 10 G
H-Thr(Me)-OH is a threonine derivative used as an ergogenic supplement. These amino acid derivatives influence the secretion of anabolic hormones, supply fuel during exercise, improve mental performance during stress-related tasks, and prevent exercise-induced muscle damage.
- Influences anabolic hormone secretion
- Supplies fuel during exercise
- Improves mental performance during stress
- Helps prevent exercise-induced muscle damage
![Medchemexpress LLC D-alanine, N-[(9H-fluoren-9-ylmethoxy)carbonyl]-N-methyl | 138774-92-2 | MFCD00153385 | 99.9% | 325.36 g/mol | C19H19NO4 | 100 G](https://assets.fishersci.com/TFS-Assets/CCG/product-images/5000300446.png-250.jpg)
Medchemexpress LLC D-alanine, N-[(9H-fluoren-9-ylmethoxy)carbonyl]-N-methyl | 138774-92-2 | MFCD00153385 | 99.9% | 325.36 g/mol | C19H19NO4 | 100 G
Fmoc-N-Me-D-Ala-OH is an Fmoc-protected N-methyl D-alanine derivative used as a building block in peptide synthesis and related research. Supplied as a solid powder with high chemical purity, it is intended for incorporation into synthetic peptides and for method development in medicinal chemistry and peptide chemistry workflows.
- High purity (99.9%) suitable for research-grade synthesis.
- Fmoc-protected N-methyl D-alanine for incorporation into peptides.
- Solid powder form for easy weighing and handling.
- Stable when stored under recommended conditions for reliable use.
- Compatible with standard solid-phase peptide synthesis protocols.
- Available in gram-scale quantities for laboratory-scale synthesis.
Medchemexpress LLC L-Ribose | 24259-59-4 | 150.13 | 5 G
L-Ribose is a non-naturally occurring pentose. It serves as an ideal starting material for synthesizing L-nucleosides analogues. It can be utilized in the synthesis of various anticancer and antiviral agents.
- Ideal starting material for synthesizing L-nucleosides analogues
- Utilized in the synthesis of various anticancer and antiviral agents
- Purity: 98.0%
- Molecular weight: 150.13
- Formula: C5H10O5
- Store at -20°C, stored under nitrogen
- In solvent, store at -80°C for 6 months or -20°C for 1 month (stored under nitrogen)
Medchemexpress LLC Hydroxychloroquine-d4-1 (sulfate) | 1216432-56-2 | MFCD19704880 | >98.0% | 437.97 g·mol⁻¹ | C18H24D4ClN3O5S | 1 MG
Hydroxychloroquine-d4-1 sulfate is the deuterium-labeled isotopologue of hydroxychloroquine supplied as a stable isotope standard for analytical and pharmacokinetic research. It is intended for laboratory use as an internal standard or tracer to support LC-MS/MS quantitation, method development, and bioanalytical validation; not for human or clinical use.
- Deuterium-labeled analog suitable as an internal standard for LC-MS/MS assays.
- High purity (>98.0%) for reliable analytical performance.
- Small single-mg packaging for trace-level standard and calibration use.
- Explicit deuterium labeling for unambiguous compound identification.
- Intended for research use only; not for human administration.
Medchemexpress LLC Cysteine Protease inhibitor | 921625-62-9 | 95.2% | 302.33 | 50 MG
Cysteine Protease inhibitor is a cysteine protease inhibitor used in immunoblotting experiments of cells or tissues. This product is for research use only.
- Useful in immunoblotting experiments
- For research use only
Medchemexpress LLC D-asparagine monohydrate | 5794-24-1 | MFCD00149558 | >98.0% | 150.13 g/mol | C4H10N2O4 | 100 G
D-Asparagine monohydrate is the D-enantiomer of the amino acid asparagine supplied as the crystalline monohydrate. It is intended as a biochemical reagent for research use, suitable as a reference standard or reagent in biochemical assays and amino-acid studies. Not for human or clinical use.
- High purity (≥98.0%) for analytical and assay applications.
- Molecular weight 150.13 g/mol and formula C4H10N2O4.
- White solid form, stable when stored protected from light.
- Storage recommendations for solutions: -80°C (6 months) or -20°C (1 month).
- Available in multiple pack sizes to suit laboratory workflows.
Cayman Chemical 13 14dIhydro15 R Shydroxy 50UG
An internal standard for quantification of 13,14-dihydro-15 (R,S)-hydroxy-16,16-difluoro-Prostaglandin E1, a metabolite of a bicyclic PGE1 derivative used in the treatment of chronic constipation, by GC- or LC-mass spectrometry (MS)
Medchemexpress LLC Cortisone acetate | 50-04-4 | 99.9% | 402.48 | 1 G
Cortisone acetate is an oxidized metabolite of Cortisol, a Glucocorticoid, functioning as an immunosuppressant and an anti-inflammatory agent. At high concentrations, it can partially interfere with the binding of Glucocorticoid to the Glucocorticoid-receptor.
- Attenuates apoptosis induced by Cortisol in peripheral-blood mononuclear cells (PBMCs).
- Decreases BCG lesions and tuberculin reactions in rabbits.
- Reduces the number of infiltrating mononuclear cells.
- Reduces caseous necrosis and ulceration.
Medchemexpress LLC Flecainide acetate | 54143-56-5 | >99.4% | 474.39 | 5 MG
Flecainide acetate (R-818) is a class 1C antiarrhythmic agent used for the management of supraventricular arrhythmia; it works by blocking the Nav1.5 sodium channel in the heart, causing prolongation of the cardiac action potential.
- Class 1C antiarrhythmic agent
- Manages supraventricular arrhythmia
- Blocks Nav1.5 sodium channels
- Prolongs cardiac action potential
Medchemexpress LLC Nh2-gly-pab-exatecan-d-glucuronic acid formic | 99.3% | 879.79 | 50 MG
NH2-Gly-PAB-Exatecan-D-glucuronic acid formic (Compound 8) is the formic salt form of H2N-Gly-PAB-Exatecan-D-glucuronic acid. This compound functions as an intermediate, reacting with the NHS group to form a drug-linker conjugate for Antibody-Drug Conjugates (ADC), specifically Mal-Gly-PAB-Exatecan-D-glucuronic acid (HY-153179). It is used in cancer research as an ADC Payload.
- Forms drug-linker conjugate for ADC.
- Suitable for cancer targeted therapy research.
- Utilized in antibody-drug conjugate development.