As nouns the difference between hexamethyl and hexamethonium
is that hexamethyl is (in combination) six methyl groups in a molecule while hexamethonium is any divalent cation derived from hexamethylene diamine, but especially the hexamethyl derivative which is a ganglionic blocker.
hexamethyl
English
Noun
(-)
(organic chemistry) (in combination ) six methyl groups in a molecule
hexamethonium
English
Noun
(
wikipedia hexamethonium)
(
en noun)
(organic chemistry, medicine) Any divalent cation derived from hexamethylene diamine, but especially the hexamethyl derivative which is a ganglionic blocker