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2026-19-9

1,8-Dihydroxy-3-methyl-6-methoxy-7-chloroanthracene-9,10-dione is a complex organic compound belonging to the anthracene family, characterized by its unique molecular structure. 1,8-Dihydroxy-3-methyl-6-methoxy-7-chloroanthracene-9,10-dione features a tricyclic aromatic system with a 9,10-dione group, which consists of two carbonyl groups (C=O) at the 9th and 10th positions. Additionally, it has a hydroxyl group (-OH) at the 1st and 8th positions, a methyl group (-CH3) at the 3rd position, and a methoxy group (-OCH3) at the 6th position. The presence of a chlorine atom at the 7th position further distinguishes 1,8-Dihydroxy-3-methyl-6-methoxy-7-chloroanthracene-9,10-dione. Due to its intricate structure, it exhibits various chemical properties and potential applications in fields such as pharmaceuticals, dyes, and materials science.

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  • 2026-19-9 Structure

  • Basic information

    1. Product Name: 1,8-Dihydroxy-3-methyl-6-methoxy-7-chloroanthracene-9,10-dione
    2. Synonyms: 2-Chloro-1,8-dihydroxy-3-methoxy-6-methyl-9,10-anthraquinone;Fragilin【plant pigment】;1,8-Dihydroxy-3-methyl-6-methoxy-7-chloroanthracene-9,10-dione
    3. CAS NO:2026-19-9
    4. Molecular Formula: C16H11ClO5
    5. Molecular Weight: 318.71
    6. EINECS: N/A
    7. Product Categories: N/A
    8. Mol File: 2026-19-9.mol

  • Chemical Properties

    1. Melting Point: N/A
    2. Boiling Point: N/A
    3. Flash Point: N/A
    4. Appearance: /
    5. Density: N/A
    6. Refractive Index: N/A
    7. Storage Temp.: N/A
    8. Solubility: N/A
    9. CAS DataBase Reference: 1,8-Dihydroxy-3-methyl-6-methoxy-7-chloroanthracene-9,10-dione(CAS DataBase Reference)
    10. NIST Chemistry Reference: 1,8-Dihydroxy-3-methyl-6-methoxy-7-chloroanthracene-9,10-dione(2026-19-9)
    11. EPA Substance Registry System: 1,8-Dihydroxy-3-methyl-6-methoxy-7-chloroanthracene-9,10-dione(2026-19-9)

  • Safety Data

    1. Hazard Codes: N/A
    2. Statements: N/A
    3. Safety Statements: N/A
    4. WGK Germany:
    5. RTECS:
    6. HazardClass: N/A
    7. PackingGroup: N/A
    8. Hazardous Substances Data: 2026-19-9(Hazardous Substances Data)

2026-19-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 2026-19-9 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 2,0,2 and 6 respectively; the second part has 2 digits, 1 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 2026-19:
(6*2)+(5*0)+(4*2)+(3*6)+(2*1)+(1*9)=49
49 % 10 = 9
So 2026-19-9 is a valid CAS Registry Number.

2026-19-9SDS

SAFETY DATA SHEETS

According to Globally Harmonized System of Classification and Labelling of Chemicals (GHS) - Sixth revised edition

Version: 1.0

Creation Date: Aug 19, 2017

Revision Date: Aug 19, 2017

1.Identification

1.1 GHS Product identifier

Product name 2-chloro-1,8-dihydroxy-3-methoxy-6-methylanthracene-9,10-dione

1.2 Other means of identification

Product number -
Other names Fragilin

1.3 Recommended use of the chemical and restrictions on use

Identified uses For industry use only.
Uses advised against no data available

1.4 Supplier's details

1.5 Emergency phone number

Emergency phone number -
Service hours Monday to Friday, 9am-5pm (Standard time zone: UTC/GMT +8 hours).

More Details:2026-19-9 SDS

2026-19-9Upstream product

2026-19-9Downstream Products

2026-19-9Relevant articles and documents

Electrochemical chlorination of physcion - An approach to naturally occurring chlorinated secondary metabolites of lichens

Stevanovic, Dragana,Damljanovic, Ivan,Vukicevic, Mirjana,Manojlovic, Nedeljko,Radulovic, Niko S.,Vukicevic, Rastko D.

experimental part, p. 1406 - 1415 (2011/10/05)

The electrochemical chlorination of physcion (=1,8-dihydroxy-3-methoxy-6- methylanthracene-9,10-dione; 1) in AcOH and CH2Cl2 was investigated by cyclic voltammetry and prep.-scale electrolysis. This approach provided access to a number of diverse biologically and pharmacologically interesting chlorinated secondary metabolites of lichen. Unlike the only previous literature report on the 'classical' chlorination of physcion (1), which allowed the preparation of 4-chlorophyscion (2b), 4,5-dichlorophyscion (3b), and 2,4,5-trichlorophyscion (4), the present procedure also gave fragilin (=2-chlorophyscion; 2a) and 2,4-dichlorophyscion (3a), alongside the previously obtained 2b, 3b, and 4. All of these compounds, except for 2a, were isolated by column chromatography and medium-pressure liquid chromatography (MPLC) and characterized by spectral data. The preparative electrolysis with a 2F·mol-1 charge consumption in AcOH and 10F·mol -1 in CH2Cl2 may have a practical synthetic utility, since the thus obtained product mixtures can be readily fractioned by column chromatography to afford pure 2b and 4, respectively. The regioselectivity of the reaction is explained by the resonance stabilization of the corresponding arenium cations - potential products of an electrophilic attack of a 'positive' Cl species on the physcion molecule. Copyright

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