Patent ID: 7407948

Claim:
A phenoselenazinium compound of Formula (1): wherein: R 1 -R 6 are each independently selected from H, optionally substituted C 1-12 -alkyl, optionally substituted C 1-12 -alkoxy, F, Cl, Br and I; A and B are each independently selected from: Q is selected from H and optionally substituted C 1-12 -alkyl; Z is selected from C(R a ) 2 , O, S, SO 2 , and NR a , in which each R a is independently selected from H and optionally substituted C 1-12 -alkyl; R 7 and R 8 are each independently selected from H and optionally substituted C 1-12 -alkyl; Y is a counteranion; and p is 1, 2 or 3, wherein the optional substituents for the alkyl and alkoxy groups represented by R 1 to R 8 , R a and Q are selected from Ph, F, Cl, Br, I, OH, OC 1-4 -alkyl, CN, OCOC 1-4 -alkyl, optionally substituted C 3-6 -cycloalkyl, COOH, COOC 1-4 -alkyl and SO 3 H, with the proviso that the compound is not 3,7-bis(4-methyl-1-piperazinyl)phenoselenazinium dichloride, 3,7-bis(N,N-dimethylamino)-phenoselenazin-5-ium chloride, 3,7-diamino-phenoselenazin-5-ium chloride, the corresponding bromides and iodides, or the compound in which R 1 to R 4 , and R 6 are all H, R 5 is methyl, A is NMe 2 and B is NH 2 .