| abstract |
A phenothiazinium compound of Formula (I) n n n n n n n n n n wherein:n A and B each independently is nn n n n n n n n n n in which R′ and R″ each independently is a linear, branched or cyclic hydrocarbon group, or R′ and R″ together with the N atom to which they are attached form an optionally substituted 5-, 6- or 7-membered ring; n and where X P− is a counteranion and P is 1, 2 or 3; n except for the compounds in which A and B are both either —N(CH 3 ) 2 or n —N(CH 2 CH 3 ) 2 for use in a treatment that requires removal, deactivation or killing of unwanted tissues or cells. |