Description

Coomassie Blue CAS NO 78642-64-5 is a high-purity, triphenylmethane-based dye widely recognized for its exceptional protein-binding properties. It is a critical reagent for visualizing proteins in analytical biochemistry, offering high sensitivity and reliable performance. This product is essential for research laboratories, diagnostic kit manufacturers, and biopharmaceutical companies engaged in protein analysis, quality control, and life science research.

Application

• Protein Staining in Gel Electrophoresis: Primarily used in Bradford assays and for staining protein bands in polyacrylamide gels (SDS-PAGE) after electrophoresis.
• Biochemical Research & Diagnostics: A key component in reagent kits for quantifying total protein concentration in cell lysates, serum, and other biological samples.
• Biopharmaceutical Quality Control: Employed in purity assessment and concentration determination of therapeutic proteins during downstream processing and final product release.
• Histology & Microscopy: Used as a counterstain in certain histological techniques to provide contrast in tissue sections.
• Industrial Enzyme Analysis: Applied in fermentation and bio-catalysis processes to monitor enzyme production and activity.

Basic Information

Product Name	Coomassie Blue
CAS No.	78642-64-5
Molecular Formula	C47H48N3O7S2Na
Molecular Weight	854.00 g/mol
Synonyms	Coomassie Brilliant Blue G-250; Acid Blue 90; Brilliant Blue G; C.I. 42655; Xylene Brilliant Cyanine G; Serva Blue G; PhastGel Blue R; Anazolene Sodium
EINECS	Contact for details

Quality Control

Our Coomassie Blue is manufactured under a strict quality management system. Each batch is tested to ensure high purity, consistent dye content, and optimal performance in protein-binding assays. A comprehensive Certificate of Analysis (COA) detailing identity, purity, absorbance profile, and other critical parameters is provided with every shipment.

Storage

Preserve in a tightly closed container, protected from light. Store at a controlled room temperature (15-25°C) in a dry environment. Keep the container sealed to prevent moisture absorption and contamination.

Specification

Item	Specification
Appearance	Dark green to blue powder
Identification (IR)	Conforms to standard
Assay (Dye Content)	≥ 90%
Absorbance (Amax)	595 - 610 nm
Loss on Drying	≤ 5.0 %
Solubility	Soluble in water and alcohols

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