Auramine O 4,4 -Bis-dimethylaminobenzophenone imine

Auramine O (4,4 -bis-dimethylaminobenzophenone imine hydrochloride) [2465-27-2] M 321.9, pK 10,71 (free base), 9.78 (carbinolamine). Crystd from EtOH as hydrochloride, very slightly soluble in CHCI3, UV 434 (370) nm. The free base has m 136 after crystn from benzene. [J Chem Soc 1724 1949 Biochemistry 9 1540 1970]. 

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