4174-67-8 8-((p-Amidinophenylazo)amino)-3-amino-5-ethyl-6-phenylphenanthridinium chloride hydrochloride M & B 4261 Phenanthridinium, 8-(3-(p-amidinophenyl)-2-triazeno)-3-amino-5-ethyl-6-phenyl-, chloride, hydrochloride