{HEAD ~ A useful fluorescent orange dye} is 14H anthrathioxanthene 14 one, commercially available as {TAIL ~ C.I. Solvent Orange} 63 from Hoescht Celanese, and having the following chemical structure: 
{ HEAD ~ A useful fluorescent orange dye } is 14H anthrathioxanthene 14 one , commercially available as { TAIL ~ C.I. Solvent Orange } 63 from Hoescht Celanese , and having the following chemical structure :
HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH