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"6H,7H,8H-Bis[1]benzopyrano[4,3-b:3',4'-e]pyran-6,8-dione" is a complex organic compound with a unique chemical structure. It belongs to the class of benzopyran derivatives, which are heterocyclic compounds containing a benzene ring fused to a pyran ring. This specific compound features two pyran rings connected through a benzene bridge, with carbonyl groups (C=O) at the 6 and 8 positions. The compound's molecular formula is C20H12O6, indicating the presence of 20 carbon atoms, 12 hydrogen atoms, and 6 oxygen atoms. It is characterized by its conjugated π-electron system, which contributes to its stability and potential applications in various fields, such as pharmaceuticals and materials science. The compound's structure and properties make it a subject of interest for researchers studying the synthesis and applications of complex heterocyclic compounds.

3156-95-4

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3156-95-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 3156-95-4 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 3,1,5 and 6 respectively; the second part has 2 digits, 9 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 3156-95:
(6*3)+(5*1)+(4*5)+(3*6)+(2*9)+(1*5)=84
84 % 10 = 4
So 3156-95-4 is a valid CAS Registry Number.

3156-95-4SDS

SAFETY DATA SHEETS

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

Version: 1.0

Creation Date: Aug 15, 2017

Revision Date: Aug 15, 2017

1.Identification

1.1 GHS Product identifier

Product name 7H-bis[1]benzopyrano[4,3-b:3',4'-c]pyran-6,8-dione

1.2 Other means of identification

Product number -
Other names (Dicumarino-3',4'):3,2:5,6-4H-pyran

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:3156-95-4 SDS

3156-95-4Downstream Products

3156-95-4Relevant academic research and scientific papers

Reaction of dimethyl sulfoxide with 4-acyloxycoumarins

Ara, Tabassum,Khan, Khaliquz Zaman,Tasneem, Khalida

, p. 4416 - 4422 (2009)

Dimethyl sulfoxide converts 4-acetoxycoumarin (1) exclusively to 2-(2-hydroxybenzoyl)-2-[(methylthio)methyl]-2,3-dihydro-4H-furo[3,2-c] chromen-4-one (3) at 180°C under a nitrogen atmosphere, but in the absence of nitrogen, the products obtained are dicou

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