Preparation, physical properties, infra-red and mass-spectra of two new benzimida· zoles, namely (4) and (5) have been described. Since these new benzimidazoles have structure ana­logous with the three benzimidazoles described in the first paper of this series, and differe from them in the absene of v-hydroxyl group in their structure, determination of their pharmacological activities will help in establishing the structl!re-reactivity relationship.


F LATIF ,M AMJAD ,M HASSAN ,