Dap/Weldwood Resorcinal's replacement can be found in Cascophen, I just got some from AircraftSpruce.com
Urac 185 was replaced with Unibond 800. I just got some of it too.
They are not the same and while some uses can overlap, they're sometimes better suited to different bow making applications. I needed both. I need to get some more Smooth On as well.