Cas 344558-90-3,Benzyloxy-acetic acid but-2-ynyl ester

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Check Digit Verification of cas no

The CAS Registry Mumber 344558-90-3 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 3,4,4,5,5 and 8 respectively; the second part has 2 digits, 9 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 344558-90:
(8*3)+(7*4)+(6*4)+(5*5)+(4*5)+(3*8)+(2*9)+(1*0)=163
163 % 10 = 3
So 344558-90-3 is a valid CAS Registry Number.

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344558-90-3Relevant academic research and scientific papers

Chelation Control of Enolate Geometry. Acyclic Diastereoselection via the Enolate Claisen Rearrangement

Burke, Steven D.,Fobare, William F.,Pacofsky, Gregory J.

, p. 5221 - 5228 (2007/10/02)

The Ireland-Claisen rearrangements of a variety of O-protected allylic glycolate esters are described.Vicinal diastereoselectivities ranging from 7.2:1 to >20:1 were observed, indicating that chelation control of enolate geometry is operational in the con

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