45240

Eosin Y disodium salt

for microscopy (Fl., Hist.)

• Synonym(s): 2′,4′,5′,7′-Tetrabromofluorescein disodium salt, Acid Red 87, Bromo acid J. TS, XL, or XX, Bromofluorescein, Bronze Bromo ES, D&C;Red No. 22, Eosin yellowish
• Empirical Formula (Hill Notation): C₂₀H₆Br₄Na₂O₅
• CAS Number: 17372-87-1
• Molecular Weight: 691.85
• Colour Index Number: 45380
• Beilstein: 3586809
• EC Number: 241-409-6
• MDL number: MFCD00005040
• UNSPSC Code: 12171500
• PubChem Substance ID: 57650266

Properties

• grade: for microscopy (Fl., Hist.)
• form: powder
• technique(s): titration: suitable
• solubility: H₂O: may be turbid 0.1 g/10 mL, red to red-brown
• density: 1.018 g/cm³
• εmax: ≥1050 at 509-519 nm
• fluorescence: λ_ex 532 nm; λ_em 540 nm in H₂O
• application(s): diagnostic assay manufacturing; hematology; histology
• storage temp.: 2-8°C
• SMILES string: [Na+].[Na+].[O-]C(=O)c1ccccc1C2=C3C=C(Br)C(=O)C(Br)=C3Oc4c(Br)c([O-])c(Br)cc24
• 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
• InChI key: SEACYXSIPDVVMV-UHFFFAOYSA-L