Seem to be extremely new and rare. Anyone had opportunity to test these? http://www.erowid.org/experiences/subs/exp_3CE.shtml http://www.erowid.org/experiences/subs/exp_3CP.shtml
I don't know about new, I think I read a trip report maybe two on 3c-p five or ten years ago, but rare, yeah...I've never seen it in any vendors product catalogue.