neoarsphenamine

noun
neo·​ars·​phen·​a·​mine | \ˌnē-ō-ärs-ˈfen-ə-ˌmēn \

Medical Definition of neoarsphenamine 

: a yellow powder C13H13As2N2NaO4S similar to arsphenamine in structure and use

called also neosalvarsan

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