(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.