Thermo Scientific Chemicals Eosin Yellowish

Catalog No.	Quantity
AAB2453530	250 g
AAB2453518	50 g

Catalog No. AAB2453530

Supplier: Thermo Scientific Chemicals B2453530

Description

CAS: 17372-87-1 | C20H12Br4Na2O8 | 745.904 g/mol

Eosin Yellowish noted to reduce the affinity of Mg2+-ATPase for ATP and increase the enzyme affinity for Mg2+ at concentrations of 10-50 M. At higher concentrations near 100 ?M the affinity for Mg2+-ATPase for the ion-activator has been shown to be reduced. This compound has also been reported to be a photosensitizer that works as a molecular photoelectrode via catalyzation of the visible-light-driven electron-transfer reaction. Eosin Y is also used to stain structures such as muscle, cytoplasm, and collagen. This agent also enhances fluorescent quenching abilities by forming a complex with polyvinulpyrrolidone.

This Thermo Scientific Chemicals brand product was originally part of the Alfa Aesar product portfolio. Some documentation and label information may refer to the legacy brand. The original Alfa Aesar product / item code or SKU reference has not changed as a part of the brand transition to Thermo Scientific Chemicals.

Applications
Eosin Yellowish noted to reduce the affinity of Mg2+-ATPase for ATP and increase the enzyme affinity for Mg2+ at concentrations of 10-50 μM. At higher concentrations near 100 μM the affinity for Mg2+-ATPase for the ion-activator has been shown to be reduced. This compound has also been reported to be a photosensitizer that works as a molecular photoelectrode via catalyzation of the visible-light-driven electron-transfer reaction. Eosin Y is also used to stain structures such as muscle, cytoplasm, and collagen. This agent also enhances fluorescent quenching abilities by forming a complex with polyvinulpyrrolidone.

Solubility
Soluble in water, fairly soluble in alcohol, insoluble in ether

Notes
Keep container tightly sealed. Store in cool, dry conditions in well sealed containers. Incompatible with oxidizing agents.

Specifications

Chemical Identifiers

• CAS: 17372-87-1
• Molecular Formula: C20H12Br4Na2O8
• Molecular Weight (g/mol): 745.904
• MDL Number: MFCD00133309
• InChI Key: MASXMTNVNASWNH-UHFFFAOYSA-L
• Synonym: eosin yellowish, eosine, bromo acid, eosine yellowish, eosine g, bromoeosine, c.i. acid red 87, sodium eosine, sodium eosinate, eosine salt free
• PubChem CID: 91886399
• IUPAC Name: disodium;2-(2,4,5,7-tetrabromo-3-oxido-6-oxoxanthen-9-yl)benzoate;trihydrate
• SMILES: C1=CC=C(C(=C1)C2=C3C=C(C(=O)C(=C3OC4=C(C(=C(C=C24)Br)[O-])Br)Br)Br)C(=O)[O-].O.O.O.[Na+].[Na+]

• Odor: Odorless
• Quantity: 250 g
• Beilstein: 3586809
• Merck Index: 14,3603
• Solubility Information: Soluble in water, fairly soluble in alcohol, insoluble in ether
• Formula Weight: 691.86
• Chemical Name or Material: Eosin Yellowish

Safety and Handling

Hazard Category	H319
Hazard Statement	GHS H Statement H319 Causes serious eye irritation.
Precautionary Statement	P264b-P280i-P305+P351+P338
EINECSNumber	241-409-6
RTECSNumber	LM5850000
TSCA	Yes
Recommended Storage	Ambient temperatures

SDS

RUO – Research Use Only