prov:value
| - ents a hydroxyl group, an alkyl radical, aralkyl radical such as benzyl, aryl radical such as phenyl, alkyl phenyl or alkoxy phenyl radical, an amino group such as H.sub.2 N--, an organically substituted amino group such as, e.g. amonoalkyl, monocycloalkyl, monoaralkyl, mono-phenyl, dialkylamino group, diaralkyl amino groups such as dibenzyl amino group, dicycloalkyl amino groups such as dicyclohe
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