| http://www.w3.org/ns/prov#value | - The dioxazine compound according to claim 1 where Q is a member selected from methoxy, ethoxy, mono- or di-sulfophenoxy, amino, alkylamino, cycloalkylamino, aralkylamino, arylamino, N,N-dialkylamino, N-alkyl-N-cycloalkylamino, N-alkyl-N-arylamino, heterocylic ring-containing amino or N-heterocylic ring-containing amino.
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