Isethionic acid is also used as a counter ion in certain pharmaceutical formulations, including the antimicrobials hexamidine and pentamidine.
2.
Propamidine isethionate, the salt of propamidine with isethionic acid, is used in the treatment of " Acanthamoeba " infection.
3.
"' Sodium 2-hydroxyethyl sulfonate "'( also : " sodium isethionate " ) is the sodium salt of 2-hydroxyethane sulfonic acid ( isethionic acid ), it is used as high production volume chemical in the " High Production Volume ( HPV ) Chemical Challenge Program " of the US Environmental Protection Ministry EPA.