以愈创蓝油烃为原料合成呱仑酸钠。
背景:以愈创木脂为试剂的粪便潜血实验(FOBTs)用于结直肠癌的筛查中,不仅对人血红蛋白特异性不高而且敏感性也很低。
BACKGROUND: Guaiac-based fecal occult blood tests (FOBTs) for colorectal cancer screening are not specific for human hemoglobin and have low sensitivity.
以愈创为原料,用二烷· 三氧化硫加合物(D。S。 试剂)作磺化剂合成呱仑酸钠,总收率71% ,产品纯度在99。5 %以上。
Sodium gualenate was prepared from guaiazulene by using dioxane sulfur trioxide(D. S. agent ) as sulfonation agent in yield of 71% with 99.5% purity.
As you know, income inequality is getting worse, low-income wages are not going up, so that component of housing has been declining in real terms.
众所周之,收入的不平等愈演愈烈,低收入者的工资不会上涨,因此以实际值计算的这部分成本是下降的
应用推荐