67 75, 1983, the product compound, 2,4,8,10 tetranitro 5H pyridotriazolobenzotriazol 6 ium, inner salt, had acid impurities that resulted in etching of {HEAD ~ metal dies} used to press {TAIL ~ the compound} 
used to press
67 75 , 1983 , the product compound , 2,4,8,10 tetranitro 5H pyridotriazolobenzotriazol 6 ium , inner salt , had acid impurities that resulted in etching of { HEAD ~ metal dies } used to press { TAIL ~ the compound }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL REL REL TAIL TAIL TAIL TAIL TAIL TAIL