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2-Diazo-5,5-dimethoxy-3-oxo-pentanoic acid phenyl ester is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.

219475-80-6

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219475-80-6 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 219475-80-6 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,1,9,4,7 and 5 respectively; the second part has 2 digits, 8 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 219475-80:
(8*2)+(7*1)+(6*9)+(5*4)+(4*7)+(3*5)+(2*8)+(1*0)=156
156 % 10 = 6
So 219475-80-6 is a valid CAS Registry Number.

219475-80-6Relevant academic research and scientific papers

Orthoester-condensation/C-O insertion reaction sequence for the preparation of tetrahydrofurans

Calter, Michael A.,Sugathapala, Priyantha M.

, p. 8813 - 8816 (1998)

This paper describes a general procedure for the efficient preparation of highly substituted tetrahydrofurans. The condensation of α-diazo-β- ketoester-derived enolates with orthoesters yields diazoacetals 1a-1d. These compounds undergo formal C-O inserti

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