Description

5(6)-Carboxyeosin is a high-purity, fluorescent xanthene dye derivative, widely recognized for its utility as a vital biological stain and tracer. This compound is essential for researchers and manufacturers requiring precise, reliable fluorescent labeling in diagnostic and analytical applications. It is primarily used in the life sciences, diagnostic reagent production, and advanced materials research sectors where consistent performance and purity are critical.

Application

• Fluorescent Labeling Agent: Used as a covalent label for proteins, antibodies, and nucleic acids in fluorescence microscopy and flow cytometry.
• Biological Staining: Employed as a vital stain for cellular structures and in viability assays.
• Diagnostic Reagents: A key component in the formulation of fluorescent probes and kits for clinical diagnostics and biomedical research.
• pH Indicator: Functions as a fluorescent pH indicator in certain biochemical and analytical systems.
• Material Science Research: Utilized in the development of fluorescent sensors and optoelectronic materials.
• Industrial Tracer: Applied as a fluorescent tracer in non-biological systems for leak detection and flow visualization studies.

Basic Information

Product Name	5(6)-Carboxyeosin
CAS No.	107175-26-8
Molecular Formula	C21H10Br4O7
Molecular Weight	705.83 g/mol
Synonyms	Eosin-5-isothiocyanate; 5(6)-Carboxyeosin, succinimidyl ester; 2',4',5',7'-Tetrabromo-3',6'-dihydroxy-3-oxospiro[isobenzofuran-1(3H),9'-[9H]xanthene]-5(6)-carboxylic acid; Eosin 5-isomer; Carboxyeosin; Eosin derivative
EINECS	Contact for details

Quality Control

Our 5(6)-Carboxyeosin is manufactured under strict quality management systems to ensure batch-to-batch consistency and high purity suitable for research and diagnostic applications. Each lot undergoes comprehensive analytical testing, including HPLC for purity and identity confirmation. Certificates of Analysis (COA) detailing all specifications are available upon request.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry place at a controlled room temperature (15-25°C). This material is light-sensitive (store away from light).

Specification

Item	Specification
Appearance	Orange to red powder
Identification (IR)	Conforms to structure
Purity (HPLC)	≥ 95%
Loss on Drying	≤ 2.0 %
Fluorescence Properties	Conforms to reference

Note: Specifications can be tailored. Please contact us for the detailed technical data sheet of a specific grade.