From rosin purified abietic acid was prepared by using abietic acid as stared material acylamino surfactant was synthesized by maleric anhydride and diethanolamine.
In this paper, not only unpurified fraction, but also highly purified snake venoms are discussed,such as rhodostomin, acutobin, agkistrodon halys antithrombotic enzyme, batroxobin.
It is concluded that the efficiency of purifying water quality and conserving water resource can be enhanced through planting hydrophytic aquatic vegetation in wetlands.
Modified calcium aluminate as a purifying agent, with two functions both of coagulability and desaltification, can be produced from industrial waste slag from alumina plant.
Etodolac was synthesized with 7-ethyltryptophol and methyl 3-oxopentanoate as the starting materials.Highly pure etodolac was obtained by purifying the crude product with a mixing solvent.