phenylacetyl,proline
Proline
921192-64-5L-Proline,L-a-glutamyl-L-prolyl-L-lysyl-L-seryl-L-seryl-L-a-aspartyl-L-threonyl-L-prolyl-L-prolyl-L-prolyl-L-cysteinyl-L-prolyl-L-arginyl-L-cysteinyl-
921192-56-5L-Proline,L-a-glutamyl-L-prolyl-L-lysyl-L-seryl-L-cysteinyl-L-a-aspartyl-L-lysyl-L-threonyl-L-histidyl-L-threonyl-L-seryl-L-prolyl-L-prolyl-L-cysteinyl-