Imidazopyrimidines
Medchemexpress LLC Xanthine oxidase, Microorganism | 9002-17-9 | ≥10 U/mg solid | 283 kDa | 100 U
Xanthine oxidase, Microorganism (XO) is a xanthine oxidoreductase enzyme that generates reactive oxygen species (ROS). It catalyzes the oxidation of hypoxanthine to xanthine, and further catalyzes the oxidation of xanthine to uric acid. This product is for research use only.
- Generates reactive oxygen species (ROS)
- Catalyzes oxidation of hypoxanthine to xanthine
- Catalyzes oxidation of xanthine to uric acid
- Rapidly and completely depletes hypoxanthine in human erythrocytes
- Inhibits growth of Plasmodium falciparum in human erythrocytes in vitro
- Reduces viability of postnatal cerebellar granule neurons
- Optimal pH is 7.5-8.0
- Soluble in water at 10 mg/mL or higher
Medchemexpress LLC Xanthine oxidase, bovine milk | 9002-17-9 | 283 kDa | 5 U
Xanthine oxidase, bovine milk is an oxidoreductase enzyme that generates reactive oxygen species (ROS). It catalyzes the oxidation of hypoxanthine to xanthine, and further catalyzes the oxidation of xanthine to uric acid. This product is for research use only.
- Generates reactive oxygen species
- Catalyzes oxidation of hypoxanthine to xanthine
- Catalyzes oxidation of xanthine to uric acid
- Depletes hypoxanthine in human erythrocytes
- Inhibits growth of Plasmodium falciparum in human erythrocytes
- Reduces viability of postnatal cerebellar granule neurons
Sigma Aldrich Fine Chemicals Biosciences Caffeine anhydrous 99 fCC1KG
Caffeine is an addictive psychoactive compound consumed mostly in the form of brewed coffee instant coffee tea and caffeinated soft drinks. Caffeine is reported to be an allergen and causes anaphylaxis. It is added to common analgesics such as paracetamol ibuprofen and aspirin for enhancing their analgesic efficacy. It is a plant-derived drug and has been detected in low doses in the floral nectar and pollen of Citrus. Determination of caffeine in beverages by square-wave voltammetry using Nafion-ruthenium oxide pyrochlore chemically modified electrode has been reported. Caffeine acts as an antagonist of adenosine A1 receptors (A1R) and A2AR at non-toxic doses. Chronic consumption of caffeine is reported to prevent the memory impairment in type 2 diabetic mice.
Medchemexpress LLC 7-methylxanthine | 552-62-5 | MFCD00037979 | 99.9% | 166.14 g·mol⁻¹ | C6H6N4O2 | 100 MG
7-Methylxanthine is a methylxanthine derivative used as a research tool and non-selective adenosine receptor antagonist. It is supplied as a solid for biochemical and pharmacological studies involving adenosine receptor signaling.
- High purity (~99.9%) suitable for analytical and biological assays.
- Well-characterized chemical with CAS number 552-62-5 for easy identification.
- Solid form, white to light brown, convenient for storage and handling.
- Compatible with common solvents such as DMSO for solution preparations.
- Recommended storage at low temperature to maintain stability.
Medchemexpress LLC (R)-lisofylline | 100324-81-0 | MFCD00867573 | 100.0% | 280.32 g/mol | C13H20N4O3 | 5 MG
(R)-Lisofylline is the R-enantiomer of lisofylline, a metabolite of pentoxifylline with documented anti-inflammatory activity. It is used as a research compound to probe lipid signaling and immune pathways, including inhibition of lysophosphatidic acid acyltransferase and disruption of IL-12-mediated STAT4 activation.
- R-enantiomer of lisofylline.
- Lysophosphatidic acid acyltransferase inhibitor (reported IC50 ≈ 0.6 μM).
- Modulates IL-12-STAT4 signaling relevant to immunology research.
- Provided in small milligram research packs for laboratory use.
- Store under nitrogen at -20°C; in solvent, -80°C for up to 6 months.
- Molecular weight 280.32 g/mol; formula C13H20N4O3.
Sigma Aldrich Fine Chemicals Biosciences Tenofovir disoproxil fumarate >=98% (HPLC) | 202138-50-9 | MFCD08141829 | 10MG
Tenofovir disoproxil fumarate >=98% (HPLC) | Purity: >=98% (HPLC) | Mol Wt: 635.51 | 202138-50-9 | MFCD08141829 | 10MG
Sigma Aldrich Fine Chemicals Biosciences Tenofovir disoproxil fumarate >=98% (HPLC) | 202138-50-9 | MFCD08141829 | 50MG
Tenofovir disoproxil fumarate >=98% (HPLC) | Purity: >=98% (HPLC) | Mol Wt: 635.51 | 202138-50-9 | MFCD08141829 | 50MG
Medchemexpress LLC Xanthosine 5'-monophosphate sodium salt | 25899-70-1 | 99.6% | 408.17 | 100 MG
Xanthosine 5'-monophosphate sodium salt is an intermediate in purine metabolism. It is a solid, white to light yellow in color, and soluble in H2O (100 mg/mL, 245.00 mM; requires ultrasonic).
- Can be used for genetic code, nucleic acid structure, and DNA, RNA and protein synthesis research.
- Potential use in foods as a flavoring agent.
- Chemical intermediate for the production of purine antimetabolites.
- Valuable in the production of synthetic polynucleotides for studies on the genetic code, protein synthesis, and nucleic acid structure.
Sigma Aldrich Fine Chemicals Biosciences 3-Isobutyl-1-methylxanthine 99 (HPLC), powder, 28822-58-4, MFCD00005584
3-Isobutyl-1-methylxanthine 99 (HPLC), powder