I don`t think there was a death metal CD released in Russia already in 1989, or any CD at all when we`re at it. That was the year when the first CD album was made here in Poland and I think Russia was an even more backward country in this department (seeing vinyl records would be released there as late as in 1994 when this format had been long forgotten in the rest of the world).
There's a Russian CD on the Melodia label from '90-'91 which is reviewed in the compilopedia. It's POSSIBLE Russia pressed CDs in 1989, but I highly doubt they would press something like this, probably more like large pop-bands that would be guaranteed to sell some 50000 copies.
Theres a small interview of one of the musicians int forum of metalrus.ru.
If i understood right this was a tape. Later it was digitized and put on CD.
This was just a demo, both, tape and CD, where never distibuted.
No, there were not any Kremator CD - the original tape was digitised and burned to Cdr and it was in private collection of one of the musicians. On metalrus.ru there was a link to the demo "Солнце для мертвых" (Sun for the dead) which was recorded after the album. The tracklisting of this demo is still unknown.