Patent ID: 7018431
Filing Date: 2006-03-28
Classification: C07D,C07H,C09B

Abstract:
1. A sulfonated diarylrhodamine dye comprising a compound of the structure: wherein R 2 , R 2′ , R 12 and R 12′ when taken alone are each independently selected from hydrogen, C 1 -C 12 alkyl, C 1 -C 12 substituted alkyl, C 1 -C 12 alkyldiyl, C 1 -C 12 substituted alkyldiyl, phenyl, substituted phenyl, benzyl, substituted benzyl, biphenyl, substituted biphenyl, naphthyl, substituted naphthyl, heterocycle, substituted heterocycle, water-solubilizing group or linking moiety, R R R R R R R R R wherein at least one of R