N. Sukumar et al., CRYSTAL-STRUCTURE AND CONFORMATION OF N-(T-BUTOXYCARBONYL)-L-VALINE N-HYDROXYSUCCINIMIDE ESTER, Bulletin of the Chemical Society of Japan, 66(7), 1993, pp. 2101-2103
An X-ray crystal structure analysis of the title compound (C14H22N2O6)
was carried out. There are two molecules (A & B) in the asymmetric un
it. In both molecules valine side chains exist in a staggered conforma
tion. The molecules in the crystalline state are stabilized by N-H...O
and C-H...O hydrogen bonding.