No one makes an adapter, but you can take two straights (one scx, one carrera) and cut them in half and epoxy together two adapters. You need to wire connections between the two halfs too.
I use Carrera manual turnouts converted to electric by switch for my pit road.You can trim the tabs and cut the others and if you play with them a bit they can fit really well and I always solder the rail joints for good contact.
I did mix Go and Compact on my previous 1/43 track
I simply cut the locking tabs and the tabs of the metal rails, then glued / melted (hot iron) the 2 parts, and finally soldered wires beneath the tracks for the electric continuity
For instance, on this picture you see the Go lane changers in a (mainly) Scx layout
Bertrand's method is the one I used. I PM'd people that asked a link to "another site" that showed his tutorial. I did not want to break the rules here. When I did mine, I used old pieces of braids instead of wires for electrical continuity. It worked out well!