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4-(2,5-dimethoxyphenyl)-3,4-dihydropyrano[3,2-c]chromene-2,5-dione is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.

697241-77-3

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697241-77-3 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 697241-77-3 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 6,9,7,2,4 and 1 respectively; the second part has 2 digits, 7 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 697241-77:
(8*6)+(7*9)+(6*7)+(5*2)+(4*4)+(3*1)+(2*7)+(1*7)=203
203 % 10 = 3
So 697241-77-3 is a valid CAS Registry Number.

697241-77-3Downstream Products

697241-77-3Relevant academic research and scientific papers

Nickel nanoparticles catalyzed chemoselective Knoevenagel condensation of Meldrum's acid and tandem enol lactonizations via cascade cyclization sequence

Khurana, Jitender M.,Vij, Kanika

, p. 3666 - 3669 (2011/07/29)

A novel protocol has been reported wherein, polyethylene glycol (PEG) stabilized nickel nanoparticles have been used as catalyst for chemoselective Knoevenagel condensation of aromatic aldehydes and Meldrum's acid to give 5-arylidene Meldrum's acid which underwent tandem enol lactonization by Michael addition/cyclization sequence with active methylene compounds in the presence of Ni nanoparticles to give corresponding enol lactone derivatives.

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