Photographic element containing a coupler capable of releasing {HEAD ~ a photographically useful group} through {TAIL ~ a triazole group} 
Photographic element containing a coupler capable of releasing { HEAD ~ a photographically useful group } through { TAIL ~ a triazole group }
OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL