Thus, typically and preferably, the method involves cleaving the derivatized molecule from the linker functionalized support at the site of {HEAD ~ the covalent attachment} to {TAIL ~ the linker} 
Thus , typically and preferably , the method involves cleaving the derivatized molecule from the linker functionalized support at the site of { HEAD ~ the covalent attachment } to { TAIL ~ the linker }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL