As {HEAD ~ the chemical yield} of {TAIL ~ compounds} after photolysis typically ranges from approximately 20% up to 60%, this quantity will provide a yield sufficient for biological testing in the given protease assays 
of
As { HEAD ~ the chemical yield } of { TAIL ~ compounds } after photolysis typically ranges from approximately 20 % up to 60 % , this quantity will provide a yield sufficient for biological testing in the given protease assays
OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH