1-O-(3-O-Sulfo-beta-D-galactopyranosyl)ceramide 3'-Sulfo-galactosylceramide 85496-63-5 Ceramide, 1-O-(3-O-sulfo-beta-D-galactopyranosyl)- I(3)SO3-Galactosylceramide I(3)SO3-Galcer