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