Description

Janelia Fluor 669, Se is a selenium-containing derivative of the Janelia Fluor (JF) series of advanced fluorophores, designed for super-resolution microscopy and single-molecule imaging. This compound matters for researchers requiring far-red to near-infrared emission with exceptional photostability and brightness for demanding live-cell and tissue imaging applications. It is needed by biopharmaceutical R&D teams, academic research institutions, and diagnostic developers working in advanced fluorescence labeling, particularly for STED, PALM, and STORM microscopy techniques.

Application

• Super-Resolution Microscopy (SRM): A critical labeling agent for techniques such as Stimulated Emission Depletion (STED), Photoactivated Localization Microscopy (PALM), and Stochastic Optical Reconstruction Microscopy (STORM).
• Single-Molecule Tracking: Enables long-term, high-precision tracking of biomolecules in live cells due to its superior photophysical properties.
• Bioconjugation & Probe Development: Serves as a reactive dye for conjugating to antibodies, proteins, peptides, and oligonucleotides to create targeted imaging probes.
• Live-Cell & Tissue Imaging: Ideal for deep-tissue and intravital imaging applications where far-red/NIR emission minimizes autofluorescence and light scattering.
• Multiplexed Imaging: Can be used in combination with other Janelia Fluor dyes for multi-color, high-resolution imaging studies.
• Diagnostic Assay Development: Used in the development of high-sensitivity fluorescence-based diagnostic tests and biosensors.

Basic Information

Product Name	Janelia Fluor 669, Se
CAS No.	2127150-20-1
Molecular Formula	Contact for details
Molecular Weight	Contact for details
Synonyms	JF669-Se; Janelia Fluor® 669 Se; Selenium-JF669; Far-red selenium-rhodamine dye; 669-Se Fluorophore; Super-resolution dye 669-Se; Selenium-containing Janelia Fluor dye
EINECS	Contact for details

Quality Control

Every batch of Janelia Fluor 669, Se is produced and analyzed under strict quality management protocols to ensure the high purity and performance required for research and diagnostic applications. Our products undergo rigorous quality testing, including advanced chromatographic and spectroscopic methods, to ensure compliance with industry standards. Certificates of Analysis (COA) with detailed purity and spectral data are available upon request.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry place at 15-25°C. This material is hygroscopic (moisture-sensitive) and should be handled under anhydrous conditions to maintain stability. For long-term storage, consider storing under an inert atmosphere.

Specification

Item	Specification
Appearance	Dark solid
Identification (HPLC)	Conforms to reference
Identification (MS)	Conforms to structure
Purity (HPLC)	≥ 95%
Absorption (λmax)	Contact for details
Emission (λmax)	Contact for details
Extinction Coefficient (ε)	Contact for details
Quantum Yield (φ)	Contact for details
Moisture Content (KF)	≤ 2.0%

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