... N H R1 HO hymexazol V Fig. (1). Chemical structures of benzimidazole-phenol hybrids (V) and hymexazol. 2.2. ... Page 3. Combinatorial Synthesis of Benzimidazole-Azo-Phenol Derivatives Combinatorial Chemistry & High Throughput Screening, 2014, Vol. 17, No. 1 91 ...