Description

3,3-Bis(p-Hydroxyphenyl)Oxindole is a high-purity organic compound belonging to the oxindole class, characterized by its two phenolic hydroxyl groups. This structural motif makes it a valuable intermediate and building block in advanced organic synthesis, particularly for creating complex molecules with specific functional properties. It is primarily sought by research and development teams in the pharmaceutical and fine chemical industries for applications in drug discovery and material science.

Application

• Pharmaceutical Intermediate: A key building block in the synthesis of novel drug candidates and active pharmaceutical ingredients (APIs), particularly those targeting neurological and metabolic pathways.
• Fine Chemical Synthesis: Used in the preparation of complex organic molecules, dyes, and pigments due to its reactive phenolic and carbonyl functionalities.
• Research & Development: Serves as a crucial reference standard and starting material in academic and industrial R&D for exploring new chemical entities and reaction methodologies.
• Polymer Chemistry: Can be utilized as a monomer or cross-linking agent in the development of specialty polymers and resins with enhanced thermal or mechanical properties.
• Biochemical Research: Investigated for its potential biological activity and as a scaffold in medicinal chemistry for enzyme inhibition studies.

Basic Information

Product Name	3,3-Bis(p-Hydroxyphenyl)Oxindole
CAS No.	125-13-3
Molecular Formula	C20H15NO3
Molecular Weight	317.34 g/mol
Synonyms	3,3-Bis(4-hydroxyphenyl)-1,3-dihydro-2H-indol-2-one; 3,3-Bis(4-hydroxyphenyl)indolin-2-one; 2',3'-Bis(4-hydroxyphenyl)oxindole; 3,3-Di(4-hydroxyphenyl)oxindole; 3,3-Bis(4-hydroxyphenyl)-2-indolinone; 3,3-Bis(4-hydroxyphenyl)-2-oxindole; 3,3-Bis(4-hydroxyphenyl)indole-2-one; 3,3-Bis(4-hydroxyphenyl)-2H-indol-2-one
EINECS	204-736-3

Quality Control

Our 3,3-Bis(p-Hydroxyphenyl)Oxindole is manufactured under a strict quality management system. Every batch undergoes comprehensive analytical testing, including HPLC, NMR, and IR spectroscopy, to ensure identity, purity, and consistency. A detailed Certificate of Analysis (COA) is provided with each shipment, confirming compliance with agreed specifications. We support custom synthesis and can tailor purity grades to meet specific R&D or cGMP requirements.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at room temperature (15-25°C). Keep away from incompatible materials such as strong oxidizing agents. For long-term storage, consider an inert atmosphere to maintain optimal stability.

Specification

Item	Specification
Appearance	Off-white to light yellow powder
Identification (IR)	Conforms to structure
Purity (HPLC)	≥ 98.0%
Melting Point	285 - 295 °C
Loss on Drying	≤ 0.5%
Residue on Ignition	≤ 0.1%
Heavy Metals (as Pb)	≤ 20 ppm

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