L-VALINE, N-[2-[(1,1-DIMETHYLETHYL)AMINO]-2-OXO-1-(2-PYRIDINYL)ETHYL]-, METHYL ESTER CAS:500316-79-0 L-VALINE, N-[N-[1-[(1,1-DIMETHYLETHOXY)CARBONYL]-L-PROLYL]-L-ISOLEUCYL]-, ETHYL ESTER CAS:65005-38-1 | ||||||||||||||