2,3,5,6-Tetraiodoterephthalic acid bis(2-hydroxyetyl) diester 61838-98-0 B 13040 BRN 2173328 Bis(2-hydroxyethyl) 2,3,5,6-tetraiodoterephthalate Terephthalic acid, 2,3,5,6-tetraiodo-, bis(2-hydroxyethyl) ester