23749-58-8 5-24-05-00073 (Beilstein Handbook Reference) 7H-Benzimidazo(2,1-a)benz(de)isoquinolin-7-one BRN 0243687 EINECS 245-865-7 Luminofor Yellow-green 490RT Luminogren Luminophor 2 Luminor 2 Luminor Yellow Green 490RT Naphthoylenebenzimidazole Yellow-green 490RT