91821-40-8

Basic information

• Product Name: 2,4-dichloro-9H-xanthen-9-one
• Synonyms: 9H-Xanthen-9-one, 2,4-dichloro-
• CAS NO: 91821-40-8
• Molecular Formula: C₁₃H₆Cl₂O₂
• Molecular Weight: 265.0915
• Mol File: 91821-40-8.mol
• Article Data: 5

Chemical Properties

• Boiling Point: 414.4°C at 760 mmHg
• Flash Point: 180.9°C
• Density: 1.493g/cm³
• Vapor Pressure: 4.45E-07mmHg at 25°C
• Refractive Index: 1.657
• CAS DataBase Reference: 2,4-dichloro-9H-xanthen-9-one(CAS DataBase Reference)
• NIST Chemistry Reference: 2,4-dichloro-9H-xanthen-9-one(91821-40-8)
• EPA Substance Registry System: 2,4-dichloro-9H-xanthen-9-one(91821-40-8)

Safety Data

• Hazardous Substances Data: 91821-40-8(Hazardous Substances Data)

Usage

General Description

2,4-dichloro-9H-xanthen-9-one is a chemical compound with the molecular formula C13H6Cl2O2. It is a xanthene derivative, and is commonly used in the synthesis of fluorescent dyes and indicators. It is often referred to as Rhodamine B base, and is a precursor to the popular fluorescent dye Rhodamine B. 2,4-dichloro-9H-xanthen-9-one is toxic and may cause skin and eye irritation, and is harmful if ingested or inhaled. It is important to handle this chemical with care and adhere to proper safety protocols when working with it.

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Relevant articles and documents

Selective Preparation of Xanthones from 2-Bromofluorobenzenes and Salicylaldehydes via Palladium-Catalyzed Acylation-SNAr Approach

A regioselective pathway for the preparation of xanthones from 2-bromofluorobenzenes and salicylaldehydes has been developed. The reaction proceeded through palladium-catalyzed acylation-SNAr sequence. Good to moderate yields of the desired xanthones were prepared in one step. Based on the results of control experiments, a possible reaction mechanism has been proposed.

Copper-catalyzed ortho-acylation of phenols with aryl aldehydes and its application in one-step preparation of xanthones

In the presence of triphenylphosphine, copper(ii) chloride can catalyze an intermolecular ortho-acylation reaction of phenols with aryl aldehydes. The reaction proceeds smoothly with a wide range of starting materials, and furthermore, it can be used to s

A Complex Induced Proximity Effect in the Anionic Fries Rearrangement of o-Iodophenyl Benzoates: Synthesis of Dihydro-O-methylsterigmatocystin and Other Xanthones

The success of an anionic Fries rearrangement, used to synthesise dihydro-O-methylsterigmatocystin and other xanthones, is dependent on the presence of a remote methoxyl substituent.