prov:value
| - such as chlorine, for example 4-chlorophenylthio, or thiazolylamino that is unsubstituted or substituted by lower alkyl, especially C1 -C4 alkyl, such as methyl, for example thiazol-2-yl-, 5-n-butylthiazol-2-yl-, 5-ethylthiazol-2-yl- or 5-methylthiazol-2-yl-amino, or wherein R1 is hydrogen or hydroxy and R2 is --A--R3 in which A is C1 -C7 alkylene, such as methylene, ethylene, propylene or pentyl
|