수분 5 . 4 % ( 칼 - 피셔법 ) ; 광학 순도 99 . 3 % ee ( HPLC ) ; 1 H NMR ( CDCl 3 , ppm ) δ 3 . 02 ( brs , 2 H ) , 3 . 27 ( m , 1 H ) , 3 . 45 ( m , 1 H ) , 4 . 14 ( m , 2 H ) , 5 . 18 ( s , 1 H ) , 6 . 65 ( d , 1 H , J = 5 . 1 ㎐), 7 . 14 ( d , 1 H , J = 5 . 1 ㎐), 7 . 24 ( m , 2 H ) , 7 . 41 ( m , 1 H ) , 7 . 86 ( m , 1 H )