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dimethyl 5-methyl-[1,1'-biphenyl]-3,4-dicarboxylate is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.

81569-72-4

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81569-72-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 81569-72-4 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 8,1,5,6 and 9 respectively; the second part has 2 digits, 7 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 81569-72:
(7*8)+(6*1)+(5*5)+(4*6)+(3*9)+(2*7)+(1*2)=154
154 % 10 = 4
So 81569-72-4 is a valid CAS Registry Number.

81569-72-4Downstream Products

81569-72-4Relevant academic research and scientific papers

Preparation and Reaction of Pyridones: Steric and Electronic Effects on Cycloadditions with 2(1H)-Pyridones

Gisby, Graham P.,Royall, Sven E.,Sammes, Peter G.

, p. 169 - 174 (2007/10/02)

The reactions of series of substituted 2(1H)-pyridones with dimethyl butynedioate have been studied.Cycloadditions across the 3,6-positions can be observed in certain instances and are particularly favoured where steric buttressing occurs between the substituent groups of the starting pyridones.The pyridone could not be induced to react with simple olefins, either by intermolecular or, via incorporation of alkenyl substituents, by intramolecular processes.From the results it is shown that 2-pyridones can be encouraged to behave as reactive classical dienes in cycloaddition reactions.

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