2-Hydroxy-l, 4-anthraquinone resembles the corresponding naphthoquinone to a marked degree. The only noteworthy difference between the two substances is that the former does not form a bisulfite addition product and, therefore, unquestionably has the $-quinonoid structure. The compound, which crystallizes in yellow needles, displaces even acetic acid from solutions of its salts, it reacts readily with amines and it is esterified by methyl alcohol ...
