Patent ID: 6762287
Filing Date: 2004-07-13
Classification: A61K,A61Q,C09B

Abstract:
A dye of formula whereinR1, R1â€², R2 and R2â€² are each independently of the others hydrogen, C1-C4alkyl, halogen or nitro, R3, R3â€², R4 and R4â€² are each independently of the others C1-C4alkyl unsubstituted or substituted by OH, C1-C4alkoxy, halogen, CN or phenyl, R5 is hydrogen or C1-C4alkyl, R6 is unsubstituted C5-C12alkyl; or C5-C8cycloalkyl; X1, X2, X3 and X1 of the compound of formula (1) are each independently of the others hydrogen, C1-C4alkyl, C1-C4alkoxy or halogen, and X3 and X4 of the compound of formula (2) are each indecendently of the others hydrogen, C1-C4alkyl, C1-C4alkoxy or halogen, and X1 and X2 of compound of formula (2) are hydrogen, and Y1 is a bridging member of formula or â€”NHâ€”(CH2)6â€”NHâ€”, and Xâˆ’ is an anion.