Vitamins

Applications One of the bioactive forms of Riboflavin. Nutritional factor found in milk, eggs, malted barley, liver, kidney, heart, leafy vegetables. Richest natural source is yeast. Minute amounts present in all plant and animal cells. Vitamin (enzyme cofactor). References Unna, K., et al.: J. Pharmacol. Exp. Ther., 76, 75 (1942), Rivlin, et al.: N. Engl. J. Med., 283, 463 (1970), Al-Shammary, F.J., et al.: Anal. Profiles Drug Subs., 19, 429 (1990),

Pyridoxal 5'-phosphate monohydrate is an active vitamin B6 metabolite

(-)-gamma-Tocotrienol analytical standard provided with w/w absolute assay, to be used for quantitative titration.

Dihydrotachysterol is a synthetic analog of vitamin D, which is derived from ergocalciferol or cholecalciferol. It is a semi-synthetic compound tailored to mimic the active form of vitamin D, playing a crucial role in calcium metabolism. Unlike naturally occurring vitamin D, Dihydrotachysterol does not require metabolic activation in the kidneys, making it particularly useful in patients with impaired renal function. Its primary mode of action involves increasing plasma calcium levels by enhancing intestinal absorption of calcium and promoting mobilization of calcium from bone. It also modulates renal tubular reabsorption of calcium, although its effect is less pronounced compared to other forms of vitamin D. Dihydrotachysterol is utilized in clinical settings to manage conditions like hypocalcemia, hypoparathyroidism, and sometimes in osteomalacia. Its rapid onset and effectiveness in increasing serum calcium levels make it valuable for acute management of disorders associated with low calcium levels. Researchers continue to explore its precise impacts and potential applications in broader contexts.

Riboflavin-2,4,4α,10α-13C4-1,3-15N2 is a stable isotope-labeled form of riboflavin, which is a type of vitamin B2 molecule. This compound is synthesized with carbon-13 and nitrogen-15 isotopes, providing a distinct mass that enables precise tracking in metabolic studies. The source of this compound is derived from isotopically enriched materials, employing advanced chemical synthesis processes to incorporate stable isotopes into the riboflavin structure without altering its fundamental biochemical properties. The mode of action involves the incorporation of the labeled riboflavin into cellular metabolic pathways. Researchers can accurately trace and measure metabolic fluxes and biochemical transformations using mass spectrometry or nuclear magnetic resonance. This enables detailed investigations into vitamin B2's role in biological systems, including its function in redox reactions and as a precursor for flavin adenine dinucleotide (FAD) and flavin mononucleotide (FMN). This tool is invaluable for studying metabolic disorders, nutrient absorption, and enzyme functions. Its applications extend to pharmacokinetics, nutritional research, and the elucidation of complex biosynthetic pathways, contributing to a deeper understanding of metabolism and the development of therapeutic strategies.

Stability Hygroscopic, Temperature Sensitive Applications Vitamin D4 is the active analogue of Vitamin D. Not a dangerous good if item is equal to or less than 1g/ml and there is less than 100g/ml in the package References Holick, M., et al.: J. Biochemistry, 10, 2799 (1971), Haddad, J., et al.: J. Bone Miner. Res., 4, 243 (1989), Palmieri, G., et al.: J. Clin. Endocrin. Metab., 82, 3516 (1997),

5-Ethyl-3-methyllumiflavinium perchlorate is an organic compound that serves as a specialized biochemical reagent. It is synthetically derived, typically from the modification of flavin structures, which are known for their versatile roles in biological systems. The compound's unique configuration allows it to interact with various enzymes and proteins, often acting as an electron mediator due to its lumiflavinium core. This compound functions primarily by participating in redox reactions within biochemical assays. The presence of the perchlorate ion contributes to its stability and reactivity, making it particularly useful in controlled experimental settings. It can facilitate the study of flavoprotein interactions and electron transfer mechanisms in biological research. Applications of 5-Ethyl-3-methyllumiflavinium perchlorate are mainly found in academic and research laboratories. It is instrumental in exploring enzyme kinetics, the mechanisms of electron transport chains, and other oxidative processes, providing insights into metabolic pathways and related biochemical phenomena. Additionally, its chemical properties make it a valuable tool in the design of novel analytical methods and experimental approaches in the field of biochemistry and molecular biology.