Boc-N-Me-Tyr(Bzl)-OH ,its cas register number is 64263-80-5.It also can be called Boc-methr(bzl)-OH ; Boc-methr(bzl)-OH cha ; Boc-N-alpha-methyl-O-benzyl-L-threonine and N-tert-Butyloxycarbonyl-N-methyl-O-benzyl-L-threonine .