Afaict pretty much the same amount as cryonics. And it is cheaper and more amenable to laser scanning. This is helpful. The post has an interesting explanation of why all the attention is on cryo:

Freezing has a certain subjective appeal. We freeze foods and rewarm them to eat. We read stories about children who have fallen into ice cold water and survived for hours without breathing. We know that human sperm, eggs, and even embryos can be frozen and thawed without harm. Freezing seems intuitively reversible and complete. Perhaps this is why cryonics quickly attained, and has kept, its singular appeal for life extensionists.

By contrast, we tend to associate chemical preservation with processes that are particularly irreversible and inadequate. Corpses are embalmed to prevent decay for only a short time. Taxidermists make deceased animals look alive, although most of their body parts are missing or transformed. “Plastinated” cadavers are used to demonstrate surface anatomy in schools and museums. No wonder, then, that cryonicists routinely dismiss chemopreservation as a truly bad idea.

Edit: Further googling suggest there might be some unsolved implementation issues.

See the last question in this list