disodium 2-(2,4,5,7-tetrabromo-6-oxido-3-oxo-3H-xanthen-9-yl)benzoate

• ChemBase ID: 103621
• Molecular Formular: C20H6Br4Na2O5
• Molecular Mass: 691.85418
• Monoisotopic Mass: 687.67440985
• SMILES: [Na+].[Na+].[O-]C(=O)c1c(cccc1)c1c2cc(Br)c(=O)c(Br)c2oc2c1cc(Br)c([O-])c2Br
• Canonical SMILES: [O-]C(=O)c1ccccc1c1c2cc(Br)c(c(c2oc2c1cc(Br)c(=O)c2Br)Br)[O-].[Na+].[Na+]
• 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
• InChIKey: SEACYXSIPDVVMV-UHFFFAOYSA-L

NAMES AND DATABASE IDS

Names

• IUPAC name: disodium 2-(2,4,5,7-tetrabromo-6-oxido-3-oxo-3H-xanthen-9-yl)benzoate
• IUPAC Traditional name: dipotassium eosin YS(2-); dipotassium 2-(2,4,5,7-tetrabromo-3-oxido-6-oxo-6H-xanthen-9-yl)benzoate; disodium eosin YS(2-)
• Synonyms: 2′,4′,5′,7′-Tetrabromofluorescein disodium salt; Bromo acid J. TS, XL, or XX; Eosin Yellowish; Acid Red 87; 2',4',5',7'-Tetrabromofluorescein disodium salt; Bromofluorescein; Bronze Bromo ES; EOSIN Y; Eosin Y disodium salt; Eosin yellowish solution; Eosin Y solution; Eosin Y; C.I. 45380; Eosin Yellowish; 2′,4′,5′,7′-四溴荧光素 二钠盐; 四溴荧光黄; 曙红 Y; 曙红微黄; 酸性红 87; 醇溶伊红; 伊红 Y 二钠盐; 曙红微黄 溶液; 伊红 Y 溶液; 伊红 Y; 曙红 微黄

Database IDs

• CAS Number: 17372-87-1
• EC Number: 241-409-6
• MDL Number: MFCD00005040; MFCD00133309
• Beilstein Number: 1443944; 3586809
• Merck Index: 143603
• PubChem SID: 24868692; 162102852; 24858876; 24868695; 24894349; 24894551
• PubChem CID: 11048
• Color Index Number: 45380

CALCULATED PROPERTIES

• Acid pKa: 3.3859963
• H Acceptors: 5
• H Donor: 0
• LogD (pH = 5.5): 2.7443838
• LogD (pH = 7.4): 0.8024107
• Log P: 5.9925447
• Molar Refractivity: 155.2642 cm^3
• Polarizability: 45.847355 Å^3
• Polar Surface Area: 89.49 Å^2
• Rotatable Bonds: 1
• Lipinski's Rule of Five: false

PROPERTIES

Physical Property

• Solubility: H2O: soluble; H2O: soluble0.1 g/mL, dark red; Soluble in water, fairly soluble in alcohol, insoluble in ether
• Apperance: S. No.: 881
• Density: 1.015 g/mL at 25 °C
• Absorption Wavelength: λmax 517 nm; λmax 518 nm
• Fluorescence: λem 540 nm in H2O; λex 520 nm; λem 540 nm in H2O; λex 532 nm

Safety Information

• Storage Condition: Room Temperature (15-30°C)
• RTECS: LM5850000
• European Hazard Symbols: Irritant (Xi)
• German water hazard class: 3
• Risk Statements: 36; R:36/37/38
• Safety Statements: 26; 26-60; S:20-25-26-37/39
• TSCA Listed: 是
• GHS Pictograms: GHS07
• GHS Signal Word: Warning
• GHS Hazard statements: H319; H319-H303
• GHS Precautionary statements: P280-P264-P305+P351+P338-P312-P337+P313; P305 + P351 + P338
• Personal Protective Equipment: dust mask type N95 (US), Eyeshields, Gloves

Product Information

• Purity: ≥85.0%
• Concentration: 5 wt. % in H2O
• Grade: adsorption and fluorescent indicator; certified by the Biological Stain Commission; for electrophoresis; for microscopy; for microscopy (Fl., Hist.); indicator grade; purum; SAJ special grade
• Compostion: Dye content, ~85%; Dye content, ≥85%; Dye content, ≥90%; Dye content, 80%; Dye content, 90%
• Suitability: in accordance for electrophoresis test; passes test for suitability as indicator; passes test for suitability for microscopy; suitable for stain in acid uregel system
• Empirical Formula (Hill Notation): C20H6Br4Na2O5

DETAILS

MP Biomedicals - 02152471

C.I 45380
Disodium Salt

MP Biomedicals - 05203346

MP Biomedicals Rare Chemical collection

Sigma Aldrich - 45235

Other Notes
Reversible staining of peptides and proteins after PAGE, followed by recovery of proteins1

Sigma Aldrich - 216127

Packaging
100 g in glass bottle

Sigma Aldrich - 318906

Packaging
500 mL in glass bottle

Sigma Aldrich - 119830

Packaging
100 g in glass bottle

Sigma Aldrich - E4382

包装
25, 100 g in glass bottle
Suitability
Certified for use as a counterstain against hematoxylin; as a constituent of Wright stain; in modified Nocht′s stain; as a constituent in eosin-methylene blue medium.

Sigma Aldrich - E6003

包装
25, 100, 250 g in glass bottle

REFERENCES

• Adsorption and fluorescence indicator.