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(R)-2-((S)-1-Methoxycarbonyl-ethylcarbamoyl)-pyrrolidine-1-carboxylic acid benzyl ester is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.

128657-00-1

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128657-00-1 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 128657-00-1 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,2,8,6,5 and 7 respectively; the second part has 2 digits, 0 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 128657-00:
(8*1)+(7*2)+(6*8)+(5*6)+(4*5)+(3*7)+(2*0)+(1*0)=141
141 % 10 = 1
So 128657-00-1 is a valid CAS Registry Number.

128657-00-1Upstream product

128657-00-1Relevant academic research and scientific papers

TOTAL SYNTHESIS OF (+)- AND (-)-NORSECURININE

Jacobi, Peter A.,Blum, Charles A.,DeSimone, Robert W.,Udodong, Uko E. S.

, p. 7173 - 7176 (2007/10/02)

(-)-Norsecurinine (1a) has been prepared in a stereospecific fashion beginning with the acetylenic oxazole 18.Diels-Alder cyclization of 18 afforded the furanoketone 19, which was transformed in five steps to the butenolide mesylate 24.Transannular alkyla

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