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