Sulfobromophthalein Sodium
Title: Sulfobromophthalein Sodium
CAS Registry Number: 71-67-0
CAS Name: 3,3¢-(4,5,6,7-Tetrabromo-3-oxo-1(3H)-isobenzofuranylidene)bis[6-hydroxybenzenesulfonic acid] disodium salt
Additional Names: disodium phenoltetrabromophthalein sulfonate; bromosulfophthalein; BSP
Trademarks: Bromsulphalein (Becton Dickinson); Bromthalein (Merck KGaA)
Molecular Formula: C20H8Br4Na2O10S2
Molecular Weight: 838.00
Percent Composition: C 28.67%, H 0.96%, Br 38.14%, Na 5.49%, O 19.09%, S 7.65%
Literature References: Prepd by the condensation of phenol and tetrabromophthalic acid or its anhydride, followed by sulfonation and conversion to the disodium salt. Pharmacology and use as liver function test: S. M. Rosenthal, E. C. White, J. Pharmacol. 24, 265 (1924); W. Häcki et al., J. Lab. Clin. Med. 88, 1019 (1976).
Properties: Hygroscopic crystals. Bitter taste. Sol in water. Insol in alcohol, acetone. Alkaline solns have an intense bluish-purple color.
Therap-Cat: Diagnostic aid (hepatic function).
Therap-Cat-Vet: Diagnostic aid (hepatic function).
Keywords: Diagnostic Aid.

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