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1. A compound conforming to the structure of Formula (I) wherein R1 is carbonyl or sulfonyl; R3 is selected from the group consisting of:
(A) hydroxyl; and(B) —O−M+, wherein M+ is a positively charged counterion; R4 and R5 are independently selected from the group consisting of hydrogen, alkoxy, amino, alkylamino, arylamino, hydroxyalkylamino, morpholino, aniline, alkyl anilino, piperazinyl, piperidinyl, and (R) a substituent selected from the group consisting of —NHR10, and —NR10R10; wherein R10 is selected from the group consisting of —R11—O—R12—R13 and —R12—R13; R11 is alkyl or aryl; R13 is hydrogen or alkyl; and R12 is a divalent substituent selected from the group consisting of:
(i) divalent oligomeric substituents comprising two or more divalent repeating units independently selected from repeating units conforming to the structure of Formula (V) wherein R20 and R21 are independently selected from the group consisting of hydrogen, alkyl, hydroxyalkyl, aryl, alkoxyalkyl, and aryloxyalkyl;(ii) divalent substituents conforming to the structure of Formula (VIII) wherein R25 and R26 are independently selected from the group consisting of hydrogen, hydroxyl, and C1-C10 alkyl, c is an integer from 1 to 12, and d is an integer from 1 to 100;(iii) divalent substituents conforming to the structure of Formula (IX) wherein R27 and R28 are independently selected from the group consisting of hydrogen, hydroxyl, and C1-C10 alkyl, e is an integer from 1 to 12, and f is an integer from 1 to 100;(iv) divalent substituents conforming to the structure of Formula (XI) wherein R31, R32, and R33 are independently selected from alkyl and hydroxyalkyl, and h is an integer from 1 to 100; and(v) divalent substituents comprising two or more substituents selected from the group consisting of (i)-(iv). wherein at least one of R4 and R5 is a substituent selected from the group consisting of —NHR10 and —NR10R10.
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