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Recrystallized HI-6 Dimethylsufate: 11,986,779

Abstract: 

The present invention is directed at the synthesis and characterization of recrystallized HI-6 dimethylsulfate (DMS). The method can comprise dissolving HI-6 DMS in an alkyl-based glycol and adding an antisolvent to recrystallize HI-6 DMS or dissolving HI-6 DMS in methanol and adding dimethoxy ethane or dimethyl formamide as the antisolvent to recrystallize HI-6 DMS. The recrystallized HI-6 DMS indicates a resistance to moisture absorption and/or a DSC melting point onset (MP Onset) at least at or above 160.0? C.

Patent Number: 
11,986,779
Date Of Issue: 
05/21/2024
Inventors: 

Shawn T. Blumberg; Paul W. Miguel

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