3,7-dibromo-2',7'-dimethylspiro[cyclopenta[1,2-b:5,4-b']dipyridine-5,9'-xanthene]

3,7-dibromo-2',7'-dimethylspiro[cyclopenta[1,2-b:5,4-b']dipyridine-5,9'-xanthene] · CAS 2000250-57-5