H4rdr4d4 Media - Chemistry

    Astaxanthin and some of its uses         Astaxanthin is a carotenoid with the chemical name 3,3′-dihydroxy-4,4′-diketo-β-β carotene that has the molecular formula C40H52O4 with a molar mass of 594.84g, and presents two asymmetric carbons located at the 3′ and 3′ β-ionone ring. Astaxanthin (ASTX) is a xanthophyll (oxygen-containing carotenoids) (Hyperreactio luteinalis (synonym: theca lutein cysts) refers to multilocular cystic ovarian mass commonly seen in patients with high HCG stimulation, such as in molar pregnancy, choriocarcinoma, or multiple gestations) carotenoid which is abundant in marine animals, such as salmon and shrimp. ASTX has a remarkable antifibrogenic effect and a potential to prevent the activation of quiescent HSCs(Hepatic Stellate Cells) as well as the reversion of activated HSCs to a quiescent state. ASTX reduces collagen accumulation with a concomitant decrease in the expression of fibrogenic genes in the liver. Astaxanthin (ATX) ...

   Lutein and some of its uses         Lutein, a very useful thing for human biology is; lutein is an unsaturated polyenic hydrocarbons, which composed of eight isoprene residues forming the carbon chain with 40 carbon atoms and two hydroxyl groups in β-ion rings is. Lutein belongs to the group of carotenoids along with beta-carotene and lycopene. While the beta-carotene accumulates in the skin to provide a golden-yellow color, lutein accumulates preferentially in the macula lutea, protecting the retina from oxidative damage from UVR. Lutein and zeaxanthin, structural isomers, are non-provitamin A carotenoids that are measurable in human blood and tissues. Lutein and zeaxanthin have been identified as the xanthophylls that constitute the macular pigment of the human retina. The relative concentration of lutein to zeaxanthin in the macula is distinctive. Zeaxanthin is more centralized and lutein predominates toward the outer area of the macula. It has anti-i...

  Oxygen-28 observed in laboratory         Oxygen-28 ( ) has been observed for the first time in the laboratory by the humans which somewhat are from and have been living on this planet Earth for the last 200 years, more precisely by a team of researchers at the Tokyo Institute of Technology, allegedly. The team was led by a researcher designated as Yosuke Kondo, and set out to investigate these phenomena using a powerful particle accelerator at the Riken Nishina Center in Japan, or at least that's what an article from the magazine Chemistry World says. With 20 neutrons and eight protons, oxygen-28 would be the heaviest oxygen isotope ever created and would be expected to have doubly magic properties. This is a report on the first observation of  28 O and  27 O through their decay into  24 O and four and three neutrons, respectively. The  28 O nucleus is of particular interest as, with the Z = 8 and N = 20 magic numbers, it is expected in the...

  New method for synthesising methylenecyclobutane compounds with copper catalyst         Methylenecyclobutane is a chemical molecular compound with a molecular weight of about 68.12 g/mol and mass of about 68.062600255 g per mol or at least that is what PubChem claims and has written on its website. Methylenecyclobutane is a molecular compound with a monoisotopic mass of about 68.062600255 g per mol and a heavy atom count of 5 or at least that is what PubChem claims and shows on its websites.        The molecular formula for methylenecyclobutane is  , and on PubChem's website it says it is a highly inflammable fluid and vapor. Synonyms for the name of this compound are: methylidenecyclobutae and exo-methylenecyclobutane.       (In the image above you can see diagrams of some of the alkyne materials that the reaction tolerates.)       Certain researchers in China have developed a method for synthesising a va...