You can read all about Menzerna's stuff here: http://www.properautocare.com/polish.html . You'll find info about the PO85RD in the "Polishes for New Ceramic Clear Coat" section. FYI PO85RD is no longer being imported.
Yeah, the ingredient for polishing the Ceramiclear paints is a high grade cerium oxide. Within the Menzerna range, I think it is found only in the "PO" polishes.