N,N-phthaloyl-DL-threonine

甲烷离子(2+)

醋酸

threo-2,5-dimethyl-4-carboethoxy-Δ2-oxazoline

cyclo(L-Pro-L-Trp-L-Ile-L-Pro-L-Leu-L-Thr-L-Pro-L-Leu)