{TAIL ~ The present invention} is directed to labeled compounds, dithiane wherein {HEAD ~ the 13C atom} is directly bonded to one or two deuterium atoms 
{ TAIL ~ The present invention } is directed to labeled compounds , dithiane wherein { HEAD ~ the 13C atom } is directly bonded to one or two deuterium atoms
TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH