Description

Fluorescein Dodecyl Ester CAS NO 155556-89-1 is a lipophilic fluorescent dye derivative, where a dodecyl (lauryl) chain is esterified to the fluorescein core. This modification is critical for its primary function as a highly sensitive, non-polar tracer and probe in membrane and lipid research. It is essential for researchers and formulators requiring precise, quantitative fluorescence detection in hydrophobic environments. Key industries that utilize this specialty chemical include life sciences R&D, diagnostic reagent manufacturing, and advanced materials development.

Application

• Membrane Biology & Biophysics Research: As a fluorescent lipid analog for studying membrane fluidity, lipid trafficking, and vesicle fusion kinetics.
• Liposome & Nanoparticle Labeling: For tracking the stability, distribution, and cellular uptake of drug delivery vehicles.
• Hydrophobic Phase Tracer: Used in microfluidic studies and chemical engineering to visualize and quantify non-aqueous phase flow and mixing.
• Fluorescent Sensor Development: Serving as a core signaling moiety in chemosensors for detecting ions or molecules in organic media.
• Polymer & Material Science: Incorporated into polymers or coatings as a fluorescent tag to study material homogeneity, degradation, or environmental exposure.
• Diagnostic Assay Components: Potential use in developing lateral flow or other diagnostic tests where a stable, lipophilic fluorophore is required.

Basic Information

Item	Detail
Product Name	Fluorescein Dodecyl Ester
CAS No.	155556-89-1
Molecular Formula	C38H48O5
Molecular Weight	584.79 g/mol
Synonyms	Dodecyl Fluorescein; Lauryl Fluorescein; Fluorescein Lauryl Ester; 12-(3',6'-Dihydroxy-3-oxo-3H-spiro[isobenzofuran-1,9'-xanthen]-6-yl) dodecanoate; 6-Dodecanoyloxy-3',6'-dihydroxyspiro[isobenzofuran-1(3H),9'-[9H]xanthen]-3-one; Fluorescein Laurate; Lipophilic Fluorescein Ester; Fluorescent Lipid Probe
EINECS	Contact for details

Quality Control

Every batch of Fluorescein Dodecyl Ester is produced and analyzed under strict quality management protocols to ensure high purity and batch-to-batch consistency, suitable for sensitive research applications. Our standard quality commitment includes comprehensive identity confirmation, purity assessment by HPLC, and control of key fluorescent impurities. A Certificate of Analysis (COA) detailing all test results is provided with each shipment.

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 product is light-sensitive (store away from light) and should be handled under conditions that minimize prolonged exposure to ambient light to preserve its fluorescent properties.

Specification

Item	Specification
Appearance	Orange to red powder or crystalline solid
Identification (IR)	Conforms to structure
Purity (HPLC)	≥ 95.0%
Loss on Drying	≤ 2.0 %
Fluorescence Properties	Ex/Em maxima consistent with standard

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