Does anyone know the proper name for Thiophene, using the Hantzsch-Widmann nomenclature system?
I BELIEVE (but I'm no expert on organic chemistry) the name under the H-W system is "thiole." Here is a link that shows the formula plus synonyms.
http://www.chemindustry.com/chemicals/723807.html
Here is a site I used to come up with that name.
http://www.chemgapedia.de/vsengine/vlu/vsc/en/ch/12/oc/vlu_organik/heterocyclen/einleitung.vlu/Page/vsc/en/ch/12/oc/heterocyclen/nomenklatur/hantzsch_nomenklatur.vscml.html