2-amino-3-(butane-1-sulfinyl)-propionic acid 20702-80-1 3-(butylsulfinyl)alanine InChI=1/C7H15NO3S/c1-2-3-4-12(11)5-6(8)7(9)10/h6H,2-5,8H2,1H3,(H,9,10)/t6-,12?/m0/s L-alanine, 3-(butylsulfinyl)- S-n-Butylcysteine sulfoxide