prov:value
| - y-(C1-C4)alkyl radicals, and C1-C4 alkyl radicals substituted by a nitrogenous group; R1 and R2 may also form, with the nitrogen atom which carries them, a 5- or 6-membered nitrogenous heterocycle, optionally substituted with at least one group chosen from alkyl, hydroxyl, and ureido groups; R3 is chosen from a hydrogen atom, a halogen atom, for example a chlorine atom, C1-C4 alkyl radicals, sulfo
|