amethopterin

Etymology tree
Ancient Greek Ᾰ̓́μμων (Ắmmōn)bor.
Latin Ammōn
Latin ammoniacusder.
English ammonia
Proto-Indo-European *-nós
Proto-Indo-European *-iHnos
Proto-Italic *-īnos
Latin -īnusder.
Old French -inbor.
Middle English -in
English -ine
English amine
Ancient Greek -ο- (-o-)der.
Latin -o-bor.
English -o-
English am(ino)-
German Methylbor.
English methyl
▲
English -o-
English metho-
English pter(oyl)
English -in
English amethopterin
From am(ino)- + metho- + pter(oyl) + -in.