(±)-Homocysteic acid504-33-633 % similar Butanesulfonic acid2386-47-232 % similar Ammonium isethionate57267-78-432 % similar Aminomethanesulfonic acid13881-91-932 % similar 2-(2-(4-(4-Nitrobenzyloxy)phenyl)ethyl)isothiourea methanesulfonate182004-65-531 % similar Methanedisulfonic acid503-40-231 % similar Pentamidine isethionate140-64-731 % similar Hexamidine diisethionate659-40-531 % similar