145991-93-1 3-O-Me-Galalpha-1-3-(aep-6-galalpha-1-2)galbeta-1-4-glcbeta-1-1-ceramide 3-O-Methyl-galalpha-1-3-(aminoethylphosphonyl-6-galalpha-1-2)galbeta-1-4-glcbeta-1-1-ceramide Phosphonotetraglycosyl ceramide