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7-Hydroxy-2-imino-6-phenylazo-2H-chromene-3-carbonitrile is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.

247229-77-2

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247229-77-2 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 247229-77-2 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,4,7,2,2 and 9 respectively; the second part has 2 digits, 7 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 247229-77:
(8*2)+(7*4)+(6*7)+(5*2)+(4*2)+(3*9)+(2*7)+(1*7)=152
152 % 10 = 2
So 247229-77-2 is a valid CAS Registry Number.

247229-77-2Downstream Products

247229-77-2Relevant academic research and scientific papers

Synthesis of substituted arylazobenzopyranopyrido-pyrimidine ring by condensation of malononitrile, 4-hydroxy-5-arylazo salicyl-aldehyde and ketones by means of ammonium acetate

Fadda,Etman,El-Desoky,Bondock

, p. 191 - 194 (2007/10/03)

Several new arylazo coumarinimide (4a-e) and/or benzopyrano[2,3- d]pyridopyrimidine (8a,9a,b) were prepared by the direct condensation malononitrile with 5-arylazo-4-hydroxysalicylaldehyde and ketones in the presence of ammonium acetate.

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