serine,valyl,arginyl,alanyl
Serine
566906-60-3L-Serine,L-a-glutamyl-L-prolyl-L-valyl-L-serylglycyl-L-seryl-L-phenylalanyl-L-threonyl-L-threonyl-L-alanyl-L-leucyl-L-a-aspartylglycyl-L-prolyl-
917601-05-9D-Serine,O-(1,1-dimethylethyl)-N-[2-[4-[(2R,3R)-1-(4-fluorophenyl)-3-[[2-(4-fluorophenyl)-2-oxoethyl]thio]-4-oxo-2-azetidinyl]phenoxy]acetyl]-,1,1-dimethylethyl ester