7263. Phentetiothalein Sodium

Nomenclature

CAS number: 18265-54-8
4,5,6,7-Tetraiodophenolphthalein sodium; 3,3-bis(4-hydroxyphenyl)-4,5,6,7-tetraiodo-1(3H)-isobenzofuranone disodium salt; 3,4,5,6-tetraiodophenolphthalein disodium salt; phenoltetraiodophthalein sodium; Iso-Iodeikon.
C20H8I4Na2O4; mol wt 865.87.
C 27.74%, H 0.93%, I 58.63%, Na 5.31%, O 7.39%.

Description and references

Prepd by the condensation of phenol and tetraiodophthalic acid or its anhydride: Orndorff, Black, Am. Chem. J. 41, 349 (1909); Zalkind, Belikova, Zh. Prikl. Khim. 8, 1210 (1935). Isomeric with iodophthalein sodium, q.v.

Chemical structure

Properties

Bronze-purple, odorless, slightly hygroscopic granules. Dec on exposure becoming incompletely sol. Sol in water, alcohol. Keep tightly closed.

Therapeutic Category

Diagnostic aid (radiopaque medium—cholecystography and hepatic function).

Keywords

Diagnostic Aid (Radiopaque Medium)