2545-84-8 68921-90-4 Calcium bis((R)-2-((2,4-dihydroxy-3,3-dimethyl-1-oxobutyl)amino)ethane-1-sulphonate) D-(-)-Pantoyltaurine, calcium salt EINECS 272-966-3 Ethanesulfonic acid, 2-(((2R)-2,4-dihydroxy-3,3-dimethyl-1-oxobutyl)amino)-, calcium salt