X-Message-Number: 27375
Date: Fri, 18 Nov 2005 12:18:38 -0700
Subject: X-1000 and Z-1000

Thanks to Eugen Leitl for the informative links.  So it is assumed that one 
of these is polyglycerol and the other is a copolymer of polyvinyl 
alcohol.  Interesting.

I guess the only thing about them that remains mysterious is why the 
manufacturer of "M22" gave them names like models of motorcycles and 
computer equipment, rather than something closer to their chemical names.

In the abstract on polyvinyl alcohol, it says it appears to be similarly 
effective to the antifreeze proteins found in cold-hardy fish and insects, 
but that the latter is much more expensive to produce.  The abstract 
doesn't address the comparative toxicity level between naturally-occurring 
proteins and polyvinyl alcohol.  I wonder if there is any information 
available regarding viability of tissues or organs devitrified after use of 
this chemical, as compared with the use of antifreeze proteins?

As to cost, X-1000 and Z-1000 themselves are not cheap.  I wonder what 
antifreeze proteins would cost?  Here's where you can buy the nifty-named 
stuff (it's "Supercool"!):


Now, does anyone know anything about the "new vitrification mixture" 
recently mentioned by Dr. Yuri Pichugin of Cryonics Institute?  I couldn't 
find any specifics on this, but perhaps I missed it somewhere.  I did see 
things about how great it supposedly works, but nothing about the chemical 

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