2 5-dihydroxyterephthalic acid tci July 8, 2019 16 32 64 128 2 5-dihydroxyterephtalic acid 2 5-dihydroxy terephthalic acid 2 5-dihydroxyterephthalic acid solubility 2 5-dihydroxyterephthalic acid diethyl ester 2 3-dihydroxyterephthalic acid