| 摘要 |
<p>X = Halogen, OH, CH3O, C2H5O, or aryloxy which is opt. substd. with CH3, halogen, sulpho or carboxy or X may be NH2, mono- or di- 1-5C alkyl; mono- or bis-(hydroxyethyl) amino; (thio) morpholine- 1,1-dioxy; aryl or arylalkyl-amino (aryl = phenyl or naphthyl opt. substd. with halogen, CH3, sulpho or carboxy and the alkyl has 1 - 5C) or N-hydroxyethyltauric gp. The compounds are optical brighteners.</p> |
