1,3-dihydroxyanthraquinone is named as purpuroxanthin. Is there anyone who can share the references containing the UV-VIS and IR spectra of 1,3-dihydroxyanthraquinone?
Wasserstoffbrücken-Bindung und chromatographische Trennbarkeit (Einfluß der Drehbarkeitsbehinderung; Grenzen der Isomerenregel), H. Hoyer, Chemische Berichte, 86, 1016-1027, 1953
UV:
Impacts of Structural Photomodification on the Toxicity of Environmental Contaminants: Anthracene Photooxidation Products, A. Mallakin, B. McConkey, G. Miao, B. McKibben, V. Snieckus, D.George Dixon, B. Greenberg, Ecotoxicology and Environmental Safety, 43, 1999, 204-212