<http://webisa.webdatacommons.org/350153624> <http://www.w3.org/ns/prov#wasQuotedFrom> <google.com> . <http://webisa.webdatacommons.org/350153624> <http://www.w3.org/ns/prov#value> "Ferris, U.S. Pat. No. 4,432,993 discloses 2-(2-benzofuranyl)ethanolamine derivatives of the formula (IX): ##STR9## wherein R1 is hydrogen or methyl; R2 is hydrogen or methyl; R3 is hydroxy, hydroxy(C1 -C6)alkoxy, benzyloxy or a group X-Y-Z wherein (i) X is a bond or oxygen, Y is a C1 -C6 straight or branched alkylene, and Z is hydrogen or carboxy; or (ii) X is a bond or --O--CH2 --, Y is a C2 -C6" . <http://webisa.webdatacommons.org/prov/215736130> <http://www.w3.org/ns/prov#wasDerivedFrom> <http://webisa.webdatacommons.org/350153624> . <http://webisa.webdatacommons.org/350153624> <http://www.w3.org/1999/02/22-rdf-syntax-ns#type> <http://www.w3.org/ns/prov#Entity> . <http://webisa.webdatacommons.org/prov/54109555> <http://www.w3.org/ns/prov#wasDerivedFrom> <http://webisa.webdatacommons.org/350153624> .