Description

Thymolindophenol CAS NO 2667-28-9 is a specialized organic compound belonging to the class of indophenol dyes. This chemical is valued for its role as a redox indicator and chromogenic reagent in analytical chemistry and biochemical research. It is primarily utilized by professionals in the pharmaceutical, diagnostic, and research and development sectors for precise quantitative analysis and enzymatic assays.

Application

• Biochemical Research: Used as a chromogenic substrate in enzyme-linked immunosorbent assays (ELISA) and other diagnostic tests.
• Analytical Chemistry: Serves as a sensitive redox indicator in titrimetric analysis and colorimetric detection methods.
• Diagnostic Manufacturing: A key component in the formulation of test strips and reagents for clinical chemistry analyzers.
• Pharmaceutical Analysis: Employed in quality control laboratories for the assay of specific active pharmaceutical ingredients (APIs).
• Microbiology: Used in culture media and tests for bacterial identification and metabolic studies.
• Research & Development: Applied in developing new analytical methodologies and biosensors in academic and industrial settings.

Basic Information

Product Name	Thymolindophenol
CAS No.	2667-28-9
Molecular Formula	C23H21NO2
Molecular Weight	343.42 g/mol
Synonyms	Thymol Blue (sodium salt form); 4,4'-(3H-2,1-Benzoxathiol-3-ylidene)bis[2-methyl-5-(1-methylethyl)phenol] S,S-dioxide; Thymolsulfonphthalein; Thymolindophenol sodium; Dithymolindophenol; NSC 403697; Thymol Blue Indicator
EINECS	220-214-5

Quality Control

Our Thymolindophenol is manufactured under strict quality management systems. Each batch undergoes comprehensive analytical testing, including identification, purity assay, and impurity profiling via HPLC and spectroscopic methods, to ensure it meets the high standards required for research and diagnostic applications. A Certificate of Analysis (COA) detailing all specifications is provided with every shipment.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at a controlled room temperature (15-25°C). This product is light-sensitive and easily oxidized; prolonged exposure to air and light should be avoided to maintain stability and performance.

Specification

Item	Specification
Appearance	Dark green to brownish-green powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Loss on Drying	≤ 1.0%
Residue on Ignition	≤ 0.5%
Heavy Metals	≤ 20 ppm
Solubility	Soluble in ethanol, alkali solutions; slightly soluble in water

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