4-[(tert-butoxycarbonyl)amino]butanoic acid 57294-38-9 BUTANOIC ACID,4-AMINO,(N-TERT.BUTYLOXYCARBONYL) InChI=1/C9H17NO4/c1-9(2,3)14-8(13)10-6-4-5-7(11)12/h4-6H2,1-3H3,(H,10,13)(H,11,12 butanoic acid, 4-[[(1,1-dimethylethoxy)carbonyl]amino]-