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3,3-diethoxy-4-ethyl-1-(toluene-4-sulfonyl)-azetidin-2-one is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.

222406-17-9

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222406-17-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 222406-17-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,2,2,4,0 and 6 respectively; the second part has 2 digits, 1 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 222406-17:
(8*2)+(7*2)+(6*2)+(5*4)+(4*0)+(3*6)+(2*1)+(1*7)=89
89 % 10 = 9
So 222406-17-9 is a valid CAS Registry Number.

222406-17-9Downstream Products

222406-17-9Relevant academic research and scientific papers

Solid and solution phase synthesis of α-keto amides via azetidinone ring-opening: Application to the synthesis of poststatin

Khim,Nuss

, p. 1827 - 1830 (1999)

3,3-Diethoxy-N-sulfonyl and carbamoyl azetidin-2-ones undergo efficient ring-opening reaction with various amine nucleophiles. Subsequent acid hydrolysis of the ketal moiety generated α-keto amides in excellent overall yields. The naturally occurring serine protease inhibitor poststatin was synthesized using this ring-opening reaction as the key step.

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