A new mixed heteropoly acid,α-H<sub>σ</sub>[GeW<sub>e</sub>Mo<sub>2</sub>VO<sub>40</sub>].22H<sub>2</sub>O,bas been prepared andcharacterized by means of ICP,
Petroleum carboxylate that may be suitable for tertiary oil recovery have been producedinexpensively from the fractions of Daqing crude oil by a two step proces
Phenylurea reacted with dichlorophenylphosphine and aldehydesor ketones by Mannich-type reaction in anhydrous benzene to give five-mem-bered phosphorous heteroc
Racemic O-methyl O-pheayl thiophosphoric acid 1 has been successfully resolved through its quinine and brucine salts in methanol solution by fractional crystall