Red No.223

Legal color:	Red No.223
General name:	Tetrabromofluorescein
Class:	Solvent Dye
FDA :	D & C Red No.21
CI #:	C.I. 45380
Color #:	Solv. Red 43
CAS #:	15086-94-9
CAS :	Spiro[isobenzofuran-1(3H),9'-[9H]xanthen]-3-one,2',4',5',7'-tetrabromo-3',6'-dihydroxy-
IUPAC:	→1;2,4,5,7-Tetrabromo-3,6-dihydroxyxanthene-9-spiro-1'-3H-isobenzofuran-3'-one →2;2',4',5',7'-Tetrabromo-3',6'-dihydroxy-spiro[3H-isobenzofuran-1,9'-xanthen]-3-one
Chemical structure :	Tetrabromofluorescein