12764-49-7 5,5'-Dihydroxy-lys-nle 5,5'-Dihydroxylysinonorleucine 5,5'-dihydroxylysylnorleucine DHLNL L-Lysine, N6-(5-amino-5-carboxypentyl)-, dihydroxy deriv. delta,delta'-Dihydroxylysylnonorleucine