Appeal No. 2003-0465
Application No. 09/424,119
- R is a C1-C4 alkyl radical;
- R1 is chosen from a hydrogen atom, a halogen atom, a C1-C4
alkyl radical, and a C1-C4 alkoxy radical;
- R2 is chosen from a hydrogen atom, a C1-C4 alkyl radical and a
C1-C4 alkoxy radical;
- R4 is chosen from a hydrogen atom, a halogen atom, a C1-C4
alkyl radical, a nitro radical, an amino radical and a (C1-
C4)acylamino radical;
- R3 is a hydrogen atom, or R4 and R3 together form a 6-membered
unsaturated ring bearing a hydroxyl substituent chelated with
one of the nitrogen atoms of the azo double bond;
- A is a residue -NR5R6 in which R5 is chosen from a hydrogen
atom, a C1-C4 alkyl radical, a C1-C4 monohydroxyalkyl radical
and a C2-C4 polyhydroxyalkyl radical; and R6 is chosen from a
hydrogen atom, a C1-C4 alkyl radical, a C1-C4 monohydroxyalkyl
radical, a C2-C4 polyhydroxyalkyl radical, a phenyl ring and a
-CH2-SO3Na radical; and
- X is chosen from a monovalent anion and a divalent anion.
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Last modified: November 3, 2007