A simple extremely fast and efficient approach for the synthesis of substituted indazole ingood to excellent yield catalyzed by using silica sulfuric acid (SSA) in DMSO solvent at roomtemperature. This is solid state reaction have been attracting the synthetic organic chemist asthey provided enhance reaction rates, less environmental pollution, greater selectivity, cleanerproducts and manipulat...

Abstract A variety of vitamin E dietary supplement capsules (DSC) based on different natural oils or synthesis products are currently found the market whose contents need to be controlled before and after marketing. Here, we present an instrumental thin-layer chromatography (TLC) method which allows a direct determination all tocopherols (T) tocotrienols (T3) as well α -tocopherol acetate simul...

As I have had some experience of the drug thus used I shall,with your permission,say a few words on the subject. In Number 4, Volume X. of 1st April 1875, of your journal (I have not the Number by me) I wrote you a note on the subject of "Free Sulphurous Acid as a Prophylactic against Cholera," and in the concluding part of that note I brought to notice the use of the dilute sulphuric acid as a...

The synthesis of fatty acid ethyl ester from chicken fat waste using ZnO/SiO2 heterogeneous catalyst was carried out using two-step procedures of acid pretreatment by esterification and transesterification of the pretreated oil. The first step reduces the high free fatty acid in the oil to an acceptable level for transesterification using concentrated sulphuric acid at a temperature of 60 oC du...

Agathis australis gum on acid hydrolysis with sulphuric acid yielded L-arabinose and D-galactose in 1:4 molar ratio with traces of L-fucose. The components of aldobiouronic acid and glucuronic acid were obtained by graded hydrolysis of degraded gum polysaccharide. The derivatives of aldobiouronic acid was obtained as methyl ester methyl glycoside.