Formation of an ester or an amide of the disulfide compound led to not only prolongation of the duration but also improvement of absorption characteristics as {TAIL ~ a result} of {HEAD ~ increase} of lipophilicity 
Formation of an ester or an amide of the disulfide compound led to not only prolongation of the duration but also improvement of absorption characteristics as { TAIL ~ a result } of { HEAD ~ increase } of lipophilicity
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 TAIL TAIL TAIL TAIL TAIL TAIL OTH HEAD HEAD HEAD HEAD HEAD OTH OTH