Analgesic activity of substituted benzylidinohydrazines

Sixteen substitued benzylidinohydrazines were evaluated for morphine-like analgesic activity by mouse tail-pinch test while aconitine-induced writhing test in mice was used to determine their ability to possess aspirin-like analgesia. All benzylidinohydrazines exhibited analgesic activity where protection against tail-pinch and aconitine-induced writhing response ranged from 16.7-83.3% and 16.7-66.7%, respectively.