Description

5(6)-Carboxyeosin Diacetate is a high-purity, fluorescent dye derivative primarily used as a key intermediate and labeling reagent in advanced biochemical research and diagnostics. Its value lies in its reactive carboxy groups, which facilitate conjugation to proteins, antibodies, and other biomolecules for fluorescence-based detection and imaging applications. This compound is essential for researchers and manufacturers in the fields of life sciences, histology, flow cytometry, and diagnostic assay development, where precise and stable fluorescent labeling is required.

Application

• Fluorescent Labeling Reagent: Conjugation to antibodies, proteins, and peptides for use in immunofluorescence (IF) and immunohistochemistry (IHC).
• Biochemical Probe Synthesis: Serving as a critical intermediate in the synthesis of more complex fluorescent probes and sensors.
• Diagnostic Assay Development: Used in the manufacturing of fluorescent detection kits for clinical diagnostics and life science research.
• Cell Staining and Imaging: Application in fluorescence microscopy for visualizing cellular structures and processes.
• Flow Cytometry: Potential use in developing fluorescent markers for cell sorting and analysis.
• Research & Development: A vital tool in academic and industrial R&D for studying biomolecular interactions and localization.

Basic Information

Product Name	5(6)-Carboxyeosin Diacetate
CAS No.	161338-87-0
Molecular Formula	C34H20Br4O11
Molecular Weight	916.03 g/mol
Synonyms	Eosin-5(6)-isothiocyanate diacetate; 5(6)-Carboxyeosin, diacetate; 2',4',5',7'-Tetrabromo-3',6'-dihydroxyspiro[isobenzofuran-1(3H),9'-[9H]xanthene]-3-one, 5(6)-carboxy-, diacetate; Eosin-5-isothiocyanate diacetate; Eosin-6-isothiocyanate diacetate; Carboxyeosin diacetate; Fluorescent eosin derivative
EINECS	Contact for details

Quality Control

Our 5(6)-Carboxyeosin Diacetate is produced under strict quality management protocols to ensure batch-to-batch consistency and high performance. Each lot undergoes comprehensive analytical testing, including HPLC for purity, spectroscopic identification (IR, NMR), and functional testing to confirm its suitability as a labeling reagent. A detailed Certificate of Analysis (COA) is provided with every shipment, documenting all critical quality attributes. We support compliance with relevant GMP and ISO 9001 standards for research and manufacturing use.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry place at a controlled room temperature (15-25°C). The product is light-sensitive and should be handled under appropriate conditions to prevent degradation. Keep the container sealed to protect from moisture.

Specification

Item	Specification
Appearance	Red to reddish-brown powder
Identification (IR)	Conforms to structure
Purity (HPLC)	≥ 95.0%
Loss on Drying	≤ 2.0 %
Heavy Metals	≤ 20 ppm
Functional Suitability	Conjugation efficiency test

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