<P>PROBLEM TO BE SOLVED: To provide a β-amino acid useful for remedy of an ache and other disability in psychiatry. <P>SOLUTION: The β-amino acid that combines with an alpha-2-delta (α2δ) subunit of a calcium channel includes, for example, 2-aminomethyl-4-methyl-7-phenyl-heptanoic acid and 2-aminomethyl-4-methyl-6-phenyl-hexanoic acid. <P>COPYRIGHT: (C)2006,JPO&NCIPI 
AMINO ACID HAVING AFFINITY FOR alpha2delta-PROTEIN