英语语法分析

The entropy effect on the Gibbs free energy of 7-thioguanine base is very small and there is little significance for the tautomeric equilibria of the base.

硫代鸟嘌呤互变异构的熵效应小，对互变异构平衡没有显著的影响，而焓变对互变异构产生了主要的影响。

Mercaptopurine has been a standard component of long-term continuing treatment for childhood lymphoblastic leukaemia, whereas 6-thioguanine has been mainly used for intensification courses.

背景6 -巯基嘌呤是治疗儿童淋巴细胞白血病的一种标准的长期维持用药，而6 -硫鸟嘌呤则主要用于强化治疗。