Bromsulphthalein

Bromsulphthalein
IUPAC name disodium 2-hydroxy-5-[4,5,6,7-tetrabromo-1-(4-hydroxy-3-sulfonatophenyl)-3-oxo-1,3-dihydro-2-benzofuran-1-yl]benzene-1-sulfonate
Identifiers
CAS number	71-67-0 Y
PubChem	6282
ChemSpider	6046 Y
UNII	62E5JU30OV Y
ChEMBL	CHEMBL453904 N
ATC code	V04CE02
Jmol-3D images	Image 1
SMILES [Na+].[Na+].[O-]S(=O)(=O)c1c(O)ccc(c1)C3(OC(=O)c2c(Br)c(Br)c(Br)c(Br)c23)c4ccc(O)c(c4)S([O-])(=O)=O
InChI InChI=1S/C20H10Br4O10S2.2Na/c21-15-13-14(16(22)18(24)17(15)23)20(34-19(13)27,7-1-3-9(25)11(5-7)35(28,29)30)8-2-4-10(26)12(6-8)36(31,32)33;;/h1-6,25-26H,(H,28,29,30)(H,31,32,33);;/q;2*+1/p-2 Y Key: GHAFORRTMVIXHS-UHFFFAOYSA-L Y InChI=1/C20H10Br4O10S2.2Na/c21-15-13-14(16(22)18(24)17(15)23)20(34-19(13)27,7-1-3-9(25)11(5-7)35(28,29)30)8-2-4-10(26)12(6-8)36(31,32)33;;/h1-6,25-26H,(H,28,29,30)(H,31,32,33);;/q;2*+1/p-2 Key: GHAFORRTMVIXHS-NUQVWONBAX
Properties
Molecular formula	C20H8O10Br4S2Na2
Molar mass	838.00 g/mol
N (verify) (what is: Y/N?) Except where noted otherwise, data are given for materials in their standard state (at 25 °C, 100 kPa)
Infobox references

Bromsulphthalein (BSP) is a dye used in liver function tests. Determining the rate of removal of the dye from the blood stream gives a measure of liver function.