Re: [ccp4bb] List of commonly used cryoprotectants and buffer molecules

[Duangrudee Tanramluk]

From the idea you described, HET codes in the last pages of this article may be 
useful.
http://digitalcommons.unl.edu/cgi/viewcontent.cgi?article=1000&context=chemistrypowers

Best wishes,
Duangrudee