Yellow No.201
　 　　 　

Legal color:	Yellow No.201
General name:	Fluorescein
Class:	Solvent Dye
FDA :	D & C Yellow No.7
CI #:	C.I. 45350:1
Color #:	Acid Yellow 73
CAS #:	518-47-8
CAS :	Spiro[isobenzofuran-1(3H),9'-[9H]xanthen]-3-one,3',6'-dihydroxy-,disodium salt
IUPAC:	→1;3,6-Dihydroxyxanthene-9-spiro-1'-3'H-isobenzofuran-3'-one →2;3',6'-Dihydroxy-spiro[3H-isobenzofuran-1,9'-xanthen]-3-one
Chemical structure :	Fluorescein