Eosin Y

Eosin Y
Names
	IUPAC name 2-(2,4,5,7-tetrabromo-6-oxido-3-oxo-3H-xanthen-9-yl)benzoate [in its deprotonated form]
Identifiers
CAS Number	17372-87-1 ;
3D model (JSmol)	Interactive image;
ChEBI	CHEBI:52053 ;
ChEMBL	ChEMBL411675 ;
ChemSpider	10580 ;
ECHA InfoCard	100.037.629
MeSH	Eosine+Yellowish-(YS)
PubChem CID	11048;
UNII	TDQ283MPCW ;
CompTox Dashboard (EPA)	DTXSID901015574 DTXSID0025234, DTXSID901015574 ;
	InChI InChI=1S/C20H8Br4O5.2Na/c21-11-5-9-13(7-3-1-2-4-8(7)20(27)28)10-6-12(22)17(26)15(24)19(10)29-18(9)14(23)16(11)25;;/h1-6,25H,(H,27,28);;/q;2+1/p-2 Key: SEACYXSIPDVVMV-UHFFFAOYSA-L ; InChI=1/C20H8Br4O5.2Na/c21-11-5-9-13(7-3-1-2-4-8(7)20(27)28)10-6-12(22)17(26)15(24)19(10)29-18(9)14(23)16(11)25;;/h1-6,25H,(H,27,28);;/q;2+1/p-2 Key: SEACYXSIPDVVMV-NUQVWONBAJ;
	SMILES c1ccc(c(c1)c2c3cc(c(c(c3oc-4c(c(=O)c(cc24)Br)Br)Br)[O-])Br)C(=O)[O-].[Na+].[Na+];
Properties
Chemical formula	C20H6Br4Na2O5
Molar mass	647.89052
Appearance	Red powder
Density	1.018 g·cm−3
Melting point	295.5 °C (563.9 °F; 568.6 K)
	Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). verify (what is ?) Infobox references

Eosin Y, also called C.I. 45380 or C.I. Acid Red 87, is a member of the triarylmethane dyes. It is produced from fluorescein by bromination.