w] [greater than or equal to] 20,000 Da, degree of deacetylation [greater than or equal to] 90%); triethylamine, Sulfanilic acid, Phenol, N-methyl pyrrolidone, and polyvinylpyrrolidone were analytical grade and purchased from Sinopharm Chemical Reagent; chloroacetic acid
, acetic acid, hexanedioic acid, acetone, glutaraldehyde, and polyvinyl alcohol were obtained from Shenyang Xinxi reagent Factory; Cholesterol was purchased from Henan xiayi Bell biological Products and polysulfone was purchased from Shanghai Shuguang chemical plastics industrial corporation.
In the second step which is the main part of the study, the cyclocondensation of each of the previously prepared thioureas with chloroacetic acid
and substitute thiophene-2-carboxaldehyde were achieved by the technique of one-pot multicomponent reaction; and newly synthesized 5-substitued-2-imino-4-thiazolidinone compounds (A-E) were obtained (Tugcu 2009).
It must be analyzed following substance groups: AOX, AOS, chloroacetic acid
, complexing agent, glyphosate / AMPA, DEHP, X-ray contrast agents and pesticides.
CMC is the product of the chemical reaction of cellulose with chloroacetic acid
under basic conditions (Figure 3).