92897-98-8
→
~55%
92897-99-9
3-hydroxy-4,5,6,7-tetraphenyl-3H-2-benzofuran-1-one
92897-94-4
6971-41-1
4,5,6,7-tetraphenyl-3a,7a-dihydro-2-benzofuran-1,3-dione