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2-((1R,3S,4S,5S,6R)-5,6-Bis-methanesulfonyloxy-3-trityloxymethyl-2-oxa-7-aza-bicyclo[2.2.1]hept-7-ylmethylene)-malonic acid diethyl ester is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.

198640-90-3

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198640-90-3 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 198640-90-3 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,9,8,6,4 and 0 respectively; the second part has 2 digits, 9 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 198640-90:
(8*1)+(7*9)+(6*8)+(5*6)+(4*4)+(3*0)+(2*9)+(1*0)=183
183 % 10 = 3
So 198640-90-3 is a valid CAS Registry Number.

198640-90-3Downstream Products

198640-90-3Relevant academic research and scientific papers

Stereoselective syntheses of 4-amino-aldoses, and chiral pyrrolidine derivatives from glycosylenamines

Fuentes, Jose,Olano, David,Pradera, M. Angeles

, p. 3443 - 3456 (2007/10/03)

The stereocontrolled synthesis of N-protected 4-amino-4-deoxy-D-galacto and -L-arabino-pyranoses starting from glycosylenamines via aza- anhydropyranoses is described. The steroselective transformation of the intermediate aza-anhydropyranoses into chiral pyrrolidines is also reported.

Rearrangements of O-protected glycosylenamines. A new and efficient route for the synthesis of O-protected 4-aminoaldoses

Angeles Pradera,Olano, David,Fuentes, Jose

, p. 8653 - 8656 (2007/10/02)

O-Protected 4-deoxy-4-diethoxycarbonylvinylaminoaldoses with D-galacto, L-arabino and L-lyxo configurations (3) are prepared by a nucleophilic rearrangement of easily available glycosylamine derivatives.

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