prov:value
| - In particular, where at least one of R3, R4, and R5 is an alkyl, aryl, heteroaryl, cyclic, or heterocyclic moiety, the moiety may include 3-20 non-hydrogen atoms selected from the group consisting of O, N, S, P and C, and be optionally further substituted by C1-C6 alkyl, ???NR6R7; ???COOR8, NO2, or halogen, wherein R6, R7, and R8 are independently hydrogen, C1-C6 alkyl, C1-C6 alkoxy, sulfoalkyl or
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