4-(benzoylamino)-2,5-diethoxy-benzenediazoniu;4-(phenylcarboxamido)-2,5-diethoxybenzenediazonium chloride;FAST BLUE BB SALT, MICROSCOPY GRADE C.I.37175;FAST BLUE BB SALT MICROSCOPY GRADE;microscopygrade;Benzenediazonium, 4-(benzoylamino)-2,5-diethoxy-;Adisol Fast Blue Salt BB;Amarthol Fast Blue BB Base