. "Butyl 2-hydroxypropanoate" . . . "Butyl \u03B1-hydroxypropionate" . . . . "n-Butyl lactate" . "N-Butyl lactate" . . . . . "''n''-Butyl lactate" . . "N-Butyl lactate" . . "Butyl ester of lactic acid" . "Butyl 2-hydroxypropanoate" . . "Butyl ester of 2-hydroxypropanoic acid" .