Description

5-Aminoeosin is a chemically modified derivative of eosin, a classic fluorescent dye, distinguished by the introduction of an amino functional group. This modification significantly enhances its utility as a versatile intermediate and reagent in advanced biochemical and diagnostic applications. It is particularly valuable for researchers and manufacturers in the life sciences and chemical synthesis sectors who require a reactive, fluorescent building block for labeling, staining, and probe development.

Application

• Fluorescent Probe Synthesis: A key intermediate for creating custom fluorescent probes and tags for bioimaging and cellular analysis.
• Bioconjugation & Labeling: Used to label proteins, antibodies, and other biomolecules due to its reactive amino group, enabling fluorescence-based detection assays.
• Histological Staining: Serves as a precursor for developing specialized stains used in microscopy and pathological examination of tissue samples.
• Photodynamic Therapy Research: Investigated as a potential photosensitizer precursor in studies related to light-activated cancer treatments.
• Chemical Synthesis: Employed as a building block in organic synthesis for creating novel xanthene-based dyes and functional materials.
• Sensor Development: Utilized in the fabrication of optical and chemical sensors that rely on fluorescence signaling.

Basic Information

Product Name	5-Aminoeosin
CAS No.	75900-75-3
Molecular Formula	C20H8Br4N2O5
Molecular Weight	691.81 g/mol
Synonyms	5-Amino-2',4',5',7'-tetrabromofluorescein; 5-Amino-2',4',5',7'-tetrabromo-3',6'-dihydroxyspiro[isobenzofuran-1(3H),9'-[9H]xanthen]-3-one; 5-Amino-Eosin; 5-Amino-Eosin Y; Tetrabromo-5-aminofluorescein; Eosin 5-isothiocyanate precursor
EINECS	Contact for details

Quality Control

Our 5-Aminoeosin is produced under strict quality management protocols to ensure batch-to-batch consistency and high purity. Each lot undergoes comprehensive analytical testing, including HPLC for purity assessment and spectroscopic methods for identity confirmation. A Certificate of Analysis (COA) detailing all specifications and test results is provided with every shipment to support your quality assurance and regulatory needs.

Storage

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

Specification

Item	Specification
Appearance	Red to dark red powder
Identification (IR)	Conforms to structure
Purity (HPLC)	≥ 95%
Loss on Drying	≤ 2.0 %
Heavy Metals	≤ 20 ppm

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