2 2-dimethoxy-2-phenylacetophenone solubility July 8, 2019 16 32 64 128 2 2-dimethoxy-2-phenylacetophenone 2 2-dimethoxy-2-phenylacetophenone 99 2 2-dimethoxy-1 2-diphenylethan-1-one 2 2-dimethoxy-2-phenylacetophenone wavelength