1897-89-8 2-(2-(2-Pyridyl)vinyl)-3-o-tolyl-4(3H)-quinazolinone 3-(2-Methylphenyl)-2-(2-(2-pyridinyl)ethenyl)-4(3H)-quinazolinone 4(3H)-Quinazolinone, 2-(2-(2-pyridyl)vinyl)-3-o-tolyl- 4(3H)-Quinazolinone, 3-(2-methylphenyl)-2-(2-(2-pyridinyl)ethenyl)- B 169 EINECS 217-590-2 Piriqualona [INN-Spanish] Piriqualone Piriqualone [INN] Piriqualonum [INN-Latin]