115787-31-0 Benzeneacetonitrite, alpha-ethyl-3,4,5-trimethoxy-alpha-(3-((2-(2-methoxyphenoxy)ethyl)amino)propyl)-, (E)-2-butenedioate (1:1) HV 723 HV-723 alpha-Ethyl-3,4,5-trimethoxy-alpha-(3-((2-(2-methoxyphenoxy)ethyl)amino)propyl)benzeneacetonitrile fumarate