2-((2-Amino-2-oxoethyl)amino)ethanesulfonic acid 7365-82-4 ACES AIDS-127485 AIDS127485 Ethanesulfonic acid, {2-[(2-amino-2-oxoethyl)amino]-} NSC166668 {2-[(2-Amino-2-oxoethyl)amino]ethanesulfonic} acid