135721-56-1 Cyclo(gln-trp-phe-gly-leu-CH2NCH3-leu) Glycine, N-(2-amino-4-methylpentyl)-N-methyl-L-leucyl-L-glutaminyl-L-tryptophyl-L-phenylalanyl-, cyclic (5-1)-peptide Mdl 29913 Mdl-29913 N-(2-Amino-4-methylpentyl)-N-methyl-L-leucyl-L-glutaminyl-L-tryptophyl-L-phenylalanylglycine cyclic (5-1)-peptide