?N-Boc-N-(2-chlorobenzyloxycarbonyl)-L-lysine , its cas register number is 54613-99-9. It also can be called Boc-n-epsilon-(2-chloro-z)-l-lysine ; Boc-lys(2-chloro-z)-oh ; Boc-lysine(2-chloro-z)-oh ; Boc-lys(cl-z)-oh ; Boc-lys(cl-z) ; Boc-lys(2-cl-cbz)-oh ; Boc-lys(2-clz) ; and Boc-lys(2-cl-z)-oh .