2-hydroxyethane-1-sulfonate + AH2 = ethanol + sulfite + A + H(+)
2-hydroxyethane-1-sulfonate + ah2 = ethanol + sulfite + a + h(+)
2-hydroxyethane-1-sulfonate + AH2 = ethanol + sulfite + A + H(+)
2-hydroxyethane-1-sulfonate + ah2 = ethanol + sulfite + a + h(+)