(R)-2-Propenyl O-4,6-O-(Phenylmethylene)-α-D-glucopyranosyl-(1→4)-O-α-D-glucopyranosyl-(1→4)-β-D-glucopyranoside is an intermediate in synthesizing 6-α-D-Glucopyranosyl Maltotriose-13C6 (G419103), a labelled 6-α-D-Glucopyranosyl Maltotriose (G419100). Sugar composition of sake.