Tetenal Parvofin - recipe?

Does anybody have a recipe for this developer?
It is not being produced since tetenal closed. They said it was based on a classic developer from the 1950s so presumably some of the cat (less later improvements) is out the bag.

Going by the MSDS, it looks like a fairly normal MQ developer, with some modifications probably to allow it to be pressed into tablets. As I understand, the 'magic' was in the long shelf life of the tablets. Perhaps I'm missing something though.

There are some interesting points in the MSDS - it appears to contain a mix of antioxidants and sequestrants, even though it's a single-use developer. By the way, it's still being sold in some places.