Patent ID: 7410506
Filing Date: 2008-08-12
Classification: A61K,A61Q

Abstract:
1. A dicationic bis-hydrazone compound of formula (I) in which each of the chromophores DYE, which may be identical or different, is chosen from chromophores of formulae (Ia), (Ib), (Ic), (Id), (Ie), (If) and (Ig) below: wherein: the groups R the groups R R two adjacent radicals R two adjacent radicals R the groups R n is an integer from 0 to 5, n′ is an integer from 0 to 4, the bond a in formulae (Ia), (Ib), (Ic), (Id), (Ie), (If) and (Ig) links each of the chromophores DYE to the linker L of formula (I), X is an organic or mineral anion or mixture of anions for equilibrating the charge(s) of the compound Ia or Ib; the group L is a linear or branched C with the proviso that when the two chromophores DYE are identical and correspond to formula (Ia) with n=n′=0, then the group L is not one of the following groups: