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1227633-41-1

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1227633-41-1 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 1227633-41-1 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,2,2,7,6,3 and 3 respectively; the second part has 2 digits, 4 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 1227633-41:
(9*1)+(8*2)+(7*2)+(6*7)+(5*6)+(4*3)+(3*3)+(2*4)+(1*1)=141
141 % 10 = 1
So 1227633-41-1 is a valid CAS Registry Number.

1227633-41-1Downstream Products

1227633-41-1Relevant articles and documents

Domino Knoevenagel-hetero-Diels-Alder reactions: a stereoselective synthesis of sugar-annulated furo[3,2-b] pyrano[4,3-d]pyran derivatives

Yadav,Reddy, B.V. Subba,Gopal, A.V. Hara,Rao, R. Nageshwar,Somaiah,Reddy, P. Purushotham,Kunwar

experimental part, p. 2305 - 2308 (2010/05/19)

The O-propargyl derivative of a sugar aldehyde derived from d-glucose undergoes smooth intramolecular domino Knoevenagel-hetero-Diels-Alder reactions with 1,3-diketones in the presence of CuI/Et3N system in refluxing methanol to afford a novel class of carbohydrate analogues, furopyranopyrans in good yields. 1-Aryl-pyrazol-5-ones also undergo smooth coupling with O-propargyl tethered sugar aldehyde under similar conditions to furnish pyrazole-annulated furopyranopyrans. The stereochemistry of the products was assigned by various NMR experiments.

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