NOVEL TETRAZOLIUM COMPOUND

摘要

NEW MATERIAL:A 2-(2-benzothiazolyl)-3-(2-carboxyphenyl)-5-phenyl-2H-tetrazolium salt expressed by formula I (X is halogen). USE:For quantitative determination of biological humoral components utilizing a redox reaction. PREPARATION:A heterocyclic hydrazone expressed by formula II as a starting material is reacted with benzaldehyde to give a compound expressed by formula III, which is then reacted with a compound expressed by formula IV in the presence of an alkali to afford a compound expressed by formula V. The resultant compound expressed by formula V is then reacted with a compound expressed by formula VI, etc.