Quote Originally Posted by analog what is that? View Post
Just wanted to ask about Phenidone, since more and more esoteric names for this has started to fly:
I have phenidone from Photograpic Formulary
Cat no 10-0870
CAS no 92-43-3
I just checked the CAS-number on my packet of phenidone from PhotoFormulary. It's the same as yours, 92-43-3. So that's what was used in PC-Sulfite.

Mark Overton