Secondary Metabolites from Inula britannica L. and Their Biological Activities. Download. Related Papers. Phytochemical and biological studies od Launaea Cass. Genus ( Asteracea) from Algerian sahara. By Houria Djeradi. Sesquiterpene lactones and their precursors as chemosystematic markers in the tribe Cichorieae of the Asteraceae. Acetaminophen C8H9NO2 - PubChemAcetaminophen (paracetamol), also commonly known as Tylenol, is the most commonly taken analgesic worldwide and is recommended as first-line therapy in pain conditions by the World Health Organization (WHO).It is also used for its antipyretic effects, helping to reduce fever. This drug was initially approved by the U.S. FDA in 1951 and is available in a variety of forms including syrup form
chloroform The chemical compound trichloromethane (CHCl3), commonly called chloroform, is a nonflammable, colorless, dense liquid with a pleasant, etherlike odor. It is used primarily Chlorodifluoromethane chemical compound Britannicachemical compound. Alternative Titles:Freon 22, HCFC-22. tetrafluoroethylene production. Elimination reaction in which two molecules of chlorodifluoromethane (CHClF 2) produce tetrafluoroethylene (C 2 F 4) and two molecules of hydrochloric acid (HCl). Encyclopædia Britannica, Inc. Chloroform - wikidoc
- OverviewNatural OccurrenceHistoryUsesSafetyExternal LinksChloroform is an organic compound with formula CHCl3. It is one of the four chloromethanes. The colorless, sweet-smelling, dense liquid is a trihalomethane, and is considered hazardous. Several million tons are produced annually as a precursor to PTFE and refrigerants, but its use for refrigerants is being phased out. The hydrogen attached to carbonin chloroform participates in hydrogen bonding.beta-Carotene C40H56 - PubChemIt has a role as a biological pigment, a provitamin A, a plant metabolite, a human metabolite, a mouse metabolite, a cofactor and an antioxidant. It is a cyclic carotene and a carotenoid beta-end group. Beta-carotene, with the molecular formula C40H56, belongs to the group of
1 Chemical Biology Research Center A bioassay-guided isolation of the chloroform fraction of the I. britannica using an in vitro melanogenesis inhibition assay led to the isolation of sesquiterpenes, 1-O-acetylbritannilactone (1), britannilactone (2) and neobritannilactone B (3). Compounds 1 and 2 significantly reduced melanin production in Iodoform chemical compound BritannicaIodoform, also called triiodomethane, a yellow, crystalline solid belonging to the family of organic halogen compounds, used as an antiseptic component of medications for minor skin diseases. First prepared in 1822, iodoform is manufactured by electrolysis of aqueous solutions containing acetone, inorganic iodides, and sodium carbonate. Phosgene chemical compound BritannicaCarbon tetrachloride, a colourless, dense, highly toxic, volatile, nonflammable liquid possessing a characteristic odour and belonging to the family of organic halogen compounds, used principally in the manufacture of dichlorodifluoromethane (a refrigerant and propellant). First prepared in 1839 by the reaction of chloroform with chlorine, carbon tetrachloride
All compounds are known and they were identified by spectral methods. The observed differences in the chemical content of the chloroform and methanol extracts were also reflected in their free radical scavenging activity, evaluated by DPPH and ABTS assays. Intraspecific variability of L britannica Chlorinated hydrocarbon chemical compound Britannicaorganohalogen compounds. In organohalogen compound:Nomenclature. Some chlorinated hydrocarbons are known by common names of long standing. These include CH 2 Cl 2 (methylene chloride), CHCl 3 (chloroform), CCl 4 (carbon tetrachloride), CH 2 =CHCl (vinyl chloride), and CH 2 =CCl 2 (vinylidene chloride). Read More.