4-(4-hydroxy-3,5-diiodophenoxy)-3,5-diiodobenzoic acid

4-(4-羟基-3,5-二碘苯氧基)-3,5-二碘苯甲酸

Also known as: Levothyroxine EP Impurity H, Levothyroxine impurity H, Tetraiodothyroformic acid, 3,3',5,5'-Tetraiodothyroformic acid, TFA 4, 3,5-Dijod-4-(3,5-dijod-4-oxy-phenoxy)-benzoesaeure, 4-(4-Hydroxy-3,5-dijod-phenoxy)-3,5-dijod-benzoesaeure, Tetrajod-thyroameisensaeure, 2.6.3'.5'-Tetrajod-4'-oxy-diphenylaether-carbonsaeure-(4)

4-(4-hydroxy-3,5-diiodophenoxy)-3,5-diiodobenzoic acid (CAS 2055-97-2) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C13H8I2O4 and a molecular weight of 482.00900 g/mol. It is also known as Levothyroxine EP Impurity H, Levothyroxine impurity H and Tetraiodothyroformic acid. Key properties include a melting point of 236-239ºC (dec.), a boiling point of 525.4ºC at 760mmHg, a density of 2.83g/cm3 and a flash point of 271.5ºC. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.

2055-97-2

Jingsj CID

J-1316342-0

Molecular Formula

C₁₃H₈I₂O₄

Chinese Name

4-(4-羟基-3,5-二碘苯氧基)-3,5-二碘苯甲酸

Molecular Weight

482.00900 g/mol

Category

Organic Acids

Last updated

8/21/2026