prov:value
| - monohydroxyalkyl or C2-C4 polyhydroxyalkyl, C1-C4 alkoxy C1-C4 alkyl or C1-C4 alkyl, substituted by a nitrogen-containing group; R7 represents hydrogen, halogen such as chlorine, a C1-C4 alkyl radical, sulfo, carboxy, C1-C4 monohydroxyalkyl or C1-C4 hydroxyalkoxy, C1-C4 acetylaminoalkoxy, C1-C4 mesylaminoalkoxy or C1-C4 carbamoylaminoalkoxy; R8 represents hydrogen, halogen or C1-C4 alkyl; R5 and R
|