Cas 1438277-53-2,1-(2-ethynyl-5-fluorophenyl)pyrrolidine

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Check Digit Verification of cas no

The CAS Registry Mumber 1438277-53-2 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,4,3,8,2,7 and 7 respectively; the second part has 2 digits, 5 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 1438277-53:
(9*1)+(8*4)+(7*3)+(6*8)+(5*2)+(4*7)+(3*7)+(2*5)+(1*3)=182
182 % 10 = 2
So 1438277-53-2 is a valid CAS Registry Number.

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1438277-53-2Relevant articles and documents

Metal-free oxidation/C(sp3)iH functionalization of unactivated alkynes using pyridine-N-oxide as the external oxidant

Chen, Dian-Feng,Han, Zhi-Yong,He, Yu-Ping,Yu, Jie,Gong, Liu-Zhu

supporting information, p. 12307 - 12310 (2013/02/22)

Externally yours: 2,3-Dihydroquinolin-4(1H)-ones are obtained in moderate to good yields (40-84 %, see scheme) in a metal-free oxidation/C(sp 3)iH functionalization of unactivated aryl alkynes. 2,6-Dichloropyridine-N-oxide is used as an external oxidant. In the reaction, a Bronsted acid, not a metal, plays a key role in the triple CiC bond activation. Copyright

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1438277-53-2