kw.\*:("7H-THIENO (2,3-C) THIOPYRANNOL-4(DIHYDRO-4,5 ETHYL-4)")
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A DISTANT ASYMMETRIC CENTRE CREATING MAGNETIC NON-EQUIVALENCE IN METHYLENE PHOTONS IN A SULPHUR HETEROCYCLERAMADAS SR; CHANDRAKUMAR NS.1979; INDIAN J. CHEM., B; IND; DA. 1979; VOL. 18; NO 2; PP. 148-151; BIBL. 12 REF.Article