ChEBI: Methyl alpha-L-rhamnosyl-(1->2)-beta-D-galactoside is a methyl glycoside that consists of methyl beta-D-galactoside having an alpha-L-rhamnosyl residue at the 2-position. A core disaccharide from the Streptococcus pneumoniae type 23F capsular polysaccharide antigen. It is a disaccharide derivative, a beta-D-galactoside and a methyl glycoside.