Fifteen new (2/4-substituted) benzaldehyde (2-oxobenzothiazolin-3-yl) acetohydrazones were synthesized and their structures were elucidated by NMR and elemental analysis. Their anticonvulsant activity was tested by a pentylenetetrazole induced seizure test. Compounds 4e and 4h were found to be the most promising among the others.
