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210236-01-4

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210236-01-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 210236-01-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,1,0,2,3 and 6 respectively; the second part has 2 digits, 0 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 210236-01:
(8*2)+(7*1)+(6*0)+(5*2)+(4*3)+(3*6)+(2*0)+(1*1)=64
64 % 10 = 4
So 210236-01-4 is a valid CAS Registry Number.

210236-01-4Relevant articles and documents

Efficient synthesis of functionalized furans via ruthenium-catalyzed cyclization of epoxyalkyne derivatives

Lo, Ching-Yu,Guo, Hongyun,Lian, Jian-Jou,Shen, Fwu-Ming,Liu, Rai-Shung

, p. 3930 - 3932 (2007/10/03)

Ruthenium catalyst TpRuPPh3(CH3CN)2Cl is found to effect the cyclization of epoxyalkynes to furans in the presence of Et3N. The reactions worked well for various epoxyalkynes with suitable oxygen and nitrogen functionalities with low loading of catalyst. It failed with disubstituted epoxyalkynes. The mechanism was elucidated by a deuterium labeling experiment that suggested that the mechanism involved a ruthenium-vinylidenium intermediate.

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