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2-(4-Hydroxy-phenyl)-2,3-dihydro-9-oxa-1,3-diaza-anthracen-4-one is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.

52218-10-7

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52218-10-7 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 52218-10-7 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 5,2,2,1 and 8 respectively; the second part has 2 digits, 1 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 52218-10:
(7*5)+(6*2)+(5*2)+(4*1)+(3*8)+(2*1)+(1*0)=87
87 % 10 = 7
So 52218-10-7 is a valid CAS Registry Number.

52218-10-7Relevant academic research and scientific papers

Isomerisation of 2-Aryl-4-oxo-2,3-dihydrobenzopyranopyrimidines to 2-Aryl-4-hydroxy-5H-benzopyranopyrimidines

O'Callaghan, Conor N.

, p. 1335 - 1337 (2007/10/02)

The base-catalysed condensation of 3-carbamoyl-2-iminochromen with aromatyc aldehydes yields 2-aryl-4-oxo-2,3-dihydrobenzopyranopyrimidines, which isomerise to stable 2-aryl-4-hydroxy-5H-benzopyranopyrimidines.The synthesis of 3-oxo-2H-benzopyranopyrazole is also described.

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