L-Proline,glycyl-L-prolyl-L-leucylglycyl-L-lysyl-L-prolylglycyl-L-alanyl-L-prolylglycyl-L-a-glutamyl-L-prolylglycyl-L-prolyl-L-glutaminylglycyl-L-prolyl-L-isoleucylglycyl-L-valyl-L-prolylglycyl-L-valyl-L-glutaminylglycyl-L-prolyl-
CAS No. 540746-17-6