Thermo Fisher, L12674.03, Tetrabromophenolphthalein ethyl ester potassium salt, Thermo Scientific Chemicals

Thermo Fisher, L12674.
03, Tetrabromophenolphthalein ethyl ester potassium salt, Thermo Scientific Chemicals Tetrabromophenolphthalein ethyl ester potassium salt is used as reagent for detection of proteins and as indicator for ion-pair extraction titration.
This Thermo Scientific Chemicals brand product was originally part of the Alfa Aesar product portfolio. Some documentation and label information may refer to the legacy brand. The original Alfa Aesar product / item code or SKU reference has not changed as a part of the brand transition to Thermo Scientific Chemicals.
CAS: 62637-91-6
IUPAC Name: potassium 2,6-dibromo-4-[(3,5-dibromo-4-oxocyclohexa-2,5-dien-1-ylidene)[2-(ethoxycarbonyl)phenyl]methyl]benzen-1-olate
Molecular Formula: C22H13Br4KO4
InChI Key: WCIQBKUTYDIBJC-UHFFFAOYSA-M
SMILES: [K+].
CCOC(=O)C1=CC=CC=C1C(C1=CC(Br)=C([O-])C(Br)=C1)=C1C=C(Br)C(=O)C(Br)=C1
Specific Absorbance (E 1%/1cm): ≥660 (c. 600nm, ethanol)
Form: Crystals or powder or crystalline powder
Appearance (Color): Blue to blue/black or dark green to green/black