N,N'-bis-(2,6-Diisopropylphenyl)-3,4,9,10-perylenetetracarboxylic diimide

for the following products Orange fluorescence dye f-240 | Perylene orange and N,N'-bis-(2,6-Diisopropylphenyl)-3,4,9,10-perylenetetracarboxylic diimide