Ethyl β-lactoside, β-D-Gal-(1-4)-β-D-Glc-1-OEt

Ethyl 4-O-β-D-galactopyranosyl-β-D-glucopyranoside

ETHYL 4-O-B-D-GALACTOPYRANOSYL-B-D-*GLUC OPYRANOSIDE

ethyl 4-O-beta-D-galactopyranosyl-beta-D-glucopyranoside