. . . "Sec-Butylamine" . "Mono-sec-butylamine" . . . . . . . . . "(\u00B1)-sec-Butylamine" . . . "(DL)-sec-Butylamine" . . "Butan-2-amine" . . "2-Aminobutane" . "''sec''-Butylamine" . "2-Butanamine" . . "1-Methylpropylamine" . "Sec-Butylamine" . "sec-Butylamine" . . "''sec''-butylamine" . . . .