1-Propanamine, N,N-dimethyl-3-(2-((methylthio)methyl)-9H-thioxanthen-9-ylidene)-, ethanedioate (1:1) 9-(3-Dimethylaminopropylidene)-2-(methylthiomethyl)thioxanthene hydrogen oxalate 93825-15-1 N,N-Dimethyl-3-(2-((methylthio)methyl)-9H-thioxanthen-9-ylidene)-1-propanamine oxalate