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(Z)-3-[(4-chlorophenylamino)methylene]-2,3-dihydro-2-methoxy-chromen-4-one is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.

71809-21-7

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71809-21-7 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 71809-21-7 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,1,8,0 and 9 respectively; the second part has 2 digits, 2 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 71809-21:
(7*7)+(6*1)+(5*8)+(4*0)+(3*9)+(2*2)+(1*1)=127
127 % 10 = 7
So 71809-21-7 is a valid CAS Registry Number.

71809-21-7Downstream Products

71809-21-7Relevant articles and documents

Multicomponent synthesis of highly substituted 2-pyridones

Neo, Ana G.,Carrillo, Rosa María,Barriga, Susana,Momán, Edelmiro,Marcaccini, Stefano,Marcos, Carlos F.

, p. 327 - 329 (2007)

A novel synthesis of polyfunctionalised pyridones, structurally related to cardiotonic agent milrinone is described. The procedure consists of an Ugi four-component reaction of 3-formylchromones, followed by a base-promoted ring-opening/ring-closing proce

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