10-Benzoyl-3,7-bis(diethylamino)phenoxazine 10-Benzoyl-N,N,N',N'-tetraethyl-10H-phenoxazine-3,7-diamine 10H-Phenoxazine-3,7-diamine, 10-benzoyl-N,N,N',N'-tetraethyl- 37060-36-9 Benzoyl leuco acronal sky blue EINECS 253-327-8