137666-07-0 2,6-Dimethyl-tyr(1)-pen(2,5)-enkephalin 2,6-Dpdpe D-Valine, 2,6-dimethyl-L-tyrosyl-3-mercapto-D-valylglycyl-L-phenylalanyl-3-mercapto-, cyclic (2-5)-disulfide Enkephalin, 2,6-dimethyl-tyr(1)-pen(2,5)- Enkephalin, 2,6-dimethyl-tyrosyl(1)-penicillaminyl(2,5)-