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用两种不同的方法制备DL-赖氨酸阿斯匹林,得两种不同晶型的结晶,用台阶型变温加热法分别测定了20℃下的贮存册,结果分别为1年4个月和3年6个月。
Two different methods were used to prepare DL-lysine aspirin, two different crystal forms were obtained, and the stored volumes at 20 ° C were measured by the step-change heating method. The results were 1 year and 4 months And 3 years and 6 months.