Cas 1464809-19-5,(5R,6R,8R)-methyl 6-(m-tolyl)-1-oxo-2-oxa-7-azaspiro[4.4]nonane-8-carboxylate

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Check Digit Verification of cas no

The CAS Registry Mumber 1464809-19-5 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,4,6,4,8,0 and 9 respectively; the second part has 2 digits, 1 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 1464809-19:
(9*1)+(8*4)+(7*6)+(6*4)+(5*8)+(4*0)+(3*9)+(2*1)+(1*9)=185
185 % 10 = 5
So 1464809-19-5 is a valid CAS Registry Number.

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1464809-19-5Relevant academic research and scientific papers

Exo-Selective construction of spiro-[butyrolactone-pyrrolidine] via 1,3-dipolar cycloaddition of azomethine ylides with α-methylene-γ- butyrolactone catalyzed by Cu(I)/DTBM-BIPHEP

Li, Qing-Hua,Liu, Tang-Lin,Wei, Liang,Zhou, Xiang,Tao, Hai-Yan,Wang, Chun-Jiang

, p. 9642 - 9644 (2013)

An expedient access to optically active spiro-[butyrolactone-pyrrolidine] was successfully developed via an unprecedented Cu(i)-catalyzed exo-selective 1,3-DC of azomethine ylides with α-methylene-γ-butyrolactone, which exhibited high diastereoselectivity (>98:2), excellent enantioselectivity (96->99% ee) and a broad substrate scope under mild conditions. The Royal Society of Chemistry 2013.

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