Manmohan Singhal, Arindam Paul, 4-Methylphenylsemicarbazone Derivatives Inhibits Cow Milk Induced Pyrexia in Rabbits, International Journal of Molecular Medicine and Advance Sciences, Volume 7,Issue 3, 2011, Pages 16-18, ISSN 1813-176x, ijmmas.2011.16.18, (https://makhillpublications.co/view-article.php?doi=ijmmas.2011.16.18) Abstract: A series of 4-methylphenylsemicarbazone was synthesized and investigated for their antipyretic activity using boiled cow milk induced pyrexia in rabbits. It was observed that the compound 4MS-8 exhibited maximum protection against pyrexia. Hydroxy substitution in aldehydic and acetophenic moiety of 4-methylphenylsemicarbazone derivatives significantly increased antipyretic activity. Keywords: Pyrexia;cow milk;antipyretic;4-methylphenylsemicarbazone;derivatives