👉 "1547.2,4-DIMETHYL-6-PENNY-MEAD-AYL-1,2,4,5-TETRAZINAN-3ONE; 674796-32-8" 1547. 2,4-DIMETHYL-6-(PYREN-1-YL)-1,2,4,5-TETRAZINAN-3-ONE; 674796-32-8