Determination of cotinine, phenylglyoxylic acid and mandelic acid in human urine by GC/ MS GC/MS同时检测人体尿液中可的宁和苯乙醇酸及苯乙醛酸的含量
To study the synthesis of chiral precursor R (-)-mandelic acid obtained by asymmetric bioreduction of phenylglyoxylic acid. 目的研究生物不对称催化苯乙酮酸合成手性药物前体R(-)-扁桃酸。
Objective Relationship between chromosome aberration ( CA) and metabolite of styrene, phenylglyoxylic acid ( PGA) and mandelic acid ( MA) in urine is probed into. 目的研究苯乙烯作业工人染色体畸变率与尿中代谢物苯乙醛酸(PGA)、苯乙醇酸(MA)浓度的关系。