Four (2-phenol derivatives) were coupled with 1H-tetrazole-5-diazonium chloride to synthesize four new compounds namely Ta-d. These prepared Azophenols reacted with two 4-alkoxy acids (8 and 10) to form two new series of 4-((1H-tetrazol-5-yl) diazenyl)-2-(R)-phenyl-4-(octyloxy) benzoates T8a-d and 4-((1H-tetrazol-5-yl)diazenyl)-2-(R)-phenyl-4-(decyloxy) benzoates T10a-d respectively. The structures of the twelve synthesized compounds were confirmed using the conventional tools of analysis, Elemental Analysis, FT-IR and 1H-NMR spectroscopy. They were tested as anti-fungi and anti-bacteria. Most of the prepared compounds possessed good antimicrobial action for Gram Positive and Gram-Negative Bacteria, whereas they gave no action on Aspergillus Fumigatus or Candida albicans.