Description

4,5-Disulfo Rhodamine-123 Dicarboxylic Acid Lithium Salt (Mixture Of Isomers) is a chemically modified, water-soluble derivative of the classic fluorescent dye Rhodamine 123. This compound matters for researchers and manufacturers requiring a highly polar, anionic fluorophore with enhanced solubility in aqueous systems for advanced labeling and detection applications. It is primarily needed by the life sciences, diagnostics, and analytical chemistry industries for developing fluorescent probes, sensors, and bioimaging agents.

Application

• Fluorescent Labeling Reagent: Used for covalently tagging biomolecules such as proteins, antibodies, and nucleic acids due to its reactive carboxylic acid groups.
• Bioimaging and Cell Staining: Serves as a polar tracer for mitochondrial and cellular imaging studies in aqueous buffers.
• Sensor Development: A key component in the synthesis of fluorescence-based chemical sensors and indicators for ions or small molecules.
• Diagnostic Assays: Incorporated into lateral flow assays, ELISA, and other diagnostic platforms as a detection label.
• Capillary Electrophoresis and HPLC: Acts as a fluorescent marker or standard in separation science techniques.
• Material Science: Used in the development of functionalized nanomaterials and smart polymers with fluorescent properties.

Basic Information

Product Name	4,5-Disulfo Rhodamine-123 Dicarboxylic Acid Lithium Salt (Mixture Of Isomers)
CAS No.	247144-99-6
Molecular Formula	C~32~H~20~Li~2~N~2~O~14~S~2
Molecular Weight	~750.6 g/mol
Synonyms	Rhodamine 123, 4',5'-disulfo-2',7'-dicarboxylic acid, dilithium salt; Sulforhodamine 123 dicarboxylic acid lithium salt; 4,5-Disulfo-2,7-dicarboxyrhodamine 123 Li salt; Fluorescent dye 247144-99-6; Rhodamine-based polar tracer; Water-soluble Rhodamine 123 derivative; Anionic Rhodamine dye; Xanthene dye derivative
EINECS	Contact for details

Quality Control

Our 4,5-Disulfo Rhodamine-123 Dicarboxylic Acid Lithium Salt is produced under strict quality management protocols. Each batch undergoes rigorous analytical testing, including HPLC for purity and identity confirmation, to ensure it meets the high standards required for research and industrial applications. Certificates of Analysis (COA) detailing lot-specific results 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). Due to its hygroscopic (moisture-sensitive) nature, the container should be kept in a desiccated environment to prevent moisture uptake, which can affect performance and stability.

Specification

Item	Specification
Appearance	Orange to red powder
Identification (IR)	Conforms to structure
Purity (HPLC)	≥ 95% (Area %)
Water Content (KF)	≤ 5.0 %
Heavy Metals (as Pb)	≤ 20 ppm
Fluorescence Properties	Conforms to reference (λ~ex~/λ~em~)
Solubility	Freely soluble in water

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