Thanks for the explanation about how it would work in humans – that’s interesting! And it makes it clear why it’s unlikely to happen for us.

Personally, I suspect that there isn’t a way to achieve useful “suspended animation” without a significant risk of death and/ or mutilation for the suspendee. Small molecules are, of necessity, relatively simple, and there are not that many of them compared to larger molecules (which have more atoms, so can be more complex). But larger molecules have correspondingly lower molalities when in solution at the 10g/kg dose that we’re talking about here, so you have to get more cryoprotective bang per gram of the molecule. This significantly reduces the credible search volume in possible chemicals, and leads to my deduction that there probably isn’t a molecule that works well enough to become a medical procedure administered by a robot with an acceptably low death rate.
File under “unobtanium” along with the FTL drive and diving through wormholes. If humans are ever going to tan their skins under a star that isn’t the Sun, they’ll get there in a generation ship, and probably at under 0.1 of The Speed Limit.

(Some people have pet rats, but I have a pet rant. Or several.)