The dyes are useful as fluorescent labels of {HEAD ~ biomolecules}, such as {TAIL ~ oligonucleotides} and deoxyribonucleosides 
such as
The dyes are useful as fluorescent labels of { HEAD ~ biomolecules } , such as { TAIL ~ oligonucleotides } and deoxyribonucleosides
OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD OTH REL REL TAIL TAIL TAIL TAIL TAIL OTH OTH