neoarsphenamine
noun
neo·ars·phen·a·mine
| \ ˌnē-ō-ärs-ˈfen-ə-ˌmēn
\
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Medical Definition of neoarsphenamine
: a yellow powder C13H13As2N2NaO4S similar to arsphenamine in structure and use
— called also neosalvarsan