122841-09-2 2-(1-Acetonylthio)-5-methylthiazolo(2,3-b)-1,3,4-thiadiazolium L 722151 L-722,151 L-722151 Thiazolo(2,3-b)-1,3,4-thiadiazol-4-ium, 5-methyl-2-((2-oxopropyl)thio)-, perchlorate