2-Pyrrolidinecarboxamide, N-(2-(2-(chloroacetyl)-1-pyrrolidinyl)-1-(1H-imidazol-4-ylmethyl)-2-oxoethyl)-5-oxo-, (2S-(2R*(R*(R*))))- 76819-95-9 Thyrotropin releasing hormone chloromethyl ketone Trh-cmk