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2-(4-Chlorophenyl)-6-methoxy-3-nitro-2H-1-benzopyran is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.

57544-20-4

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57544-20-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 57544-20-4 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 5,7,5,4 and 4 respectively; the second part has 2 digits, 2 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 57544-20:
(7*5)+(6*7)+(5*5)+(4*4)+(3*4)+(2*2)+(1*0)=134
134 % 10 = 4
So 57544-20-4 is a valid CAS Registry Number.
InChI:InChI=1/C16H12ClNO4/c1-21-13-6-7-15-11(8-13)9-14(18(19)20)16(22-15)10-2-4-12(17)5-3-10/h2-9,16H,1H3

57544-20-4SDS

SAFETY DATA SHEETS

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

Version: 1.0

Creation Date: Aug 19, 2017

Revision Date: Aug 19, 2017

1.Identification

1.1 GHS Product identifier

Product name 2-(4-Chlorophenyl)-6-methoxy-3-nitro-2H-chromene

1.2 Other means of identification

Product number -
Other names -

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:57544-20-4 SDS

57544-20-4Relevant academic research and scientific papers

Augmentation of Enantioselectivity by Spatial Tuning of Aminocatalyst: Synthesis of 2-Alkyl/aryl-3-nitro-2 H-chromenes by Tandem Oxa-Michael-Henry Reaction

Bez, Ghanashyam,Mohanta, Rahul

, p. 4627 - 4636 (2020/05/01)

The asymmetric oxa-Michael addition of salicylaldehyde to conjugated nitroalkenes often suffers from poor reactivity and selectivity and a long reaction time. Because of the formation of an iminium ion with aminocatalyst, the nucleophilicity of the phenol

A NOVEL SYNTHESIS OF 6-METHOXY AND 7-METHOXY FLAVONOLS

Rao, Takkellapati Sudhakar,Deshpande, Shubhada,Mathur, Hari Har,Irivedi, Girish Kumar

, p. 1943 - 1946 (2007/10/02)

Condensation of 4-methoxy- (1) or 5-methoxy- (2) salicylaldehyde with ω-nitrostyrene (3-6) in the presence of triethylamine yields 7-methoxy or 6-methoxy-3-nitro-2H-flavene (7-13), which on treatment with alkaline hydrogen peroxide yields the correspondin

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