Chemical reaction in the crystallization of sulfanilamide

 

What is the chemical reaction in the crystallization of sulfanilamide with 95% ethyl alcohol? The Sulfanilamide has 5% fluorenone as an impurity.

Sample Solution

Most of the studies mainly focus on the co-crystallization step rather than on the synthesis and co-crystallization together. Based on the concept of direct co-crystal assembly, we have successfully produced 1:1 co-crystals of sulfathiazole-theophylline (STZ-THE) and 1:1 co-crystals of sulfathiazole-sulfanilamide (STZ-SNM) by integrating the chemical synthesis and co-crystallization. Interestingly, the yields of the integration method were higher than the ones of normal reactive crystallization methods, and the amount of purities were also reduced. For the chemical reaction that suffered from the low yields or had the impurity which was hard to be separated, the formation of co-crystals might be an alternative strategy to improve the efficiency of purification and the value of drugs as well.

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Why the Body Reacts to Coronavirus in The Way It Does:

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