22293-47-6 26814-89-1 3-(alpha-Methylphenethyl)sydnone imine monohydrochloride 3-(beta-Phenylisopropyl)-sidnonimine hydrochloride 3441-64-3 69680-57-5 Sidnofen Sydnone imine, 3-(1-methyl-2-phenylethyl)-, monohydrochloride Sydnone imine, 3-(alpha-methylphenethyl)-, monohydrochloride Sydnophen hydrochloride Sydnophene