Cas 222045-72-9,2-benzenesulfonyl-5-propa-1,2-dienyloxy-pentanoic acid methyl ester

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Check Digit Verification of cas no

The CAS Registry Mumber 222045-72-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,2,2,0,4 and 5 respectively; the second part has 2 digits, 7 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 222045-72:
(8*2)+(7*2)+(6*2)+(5*0)+(4*4)+(3*5)+(2*7)+(1*2)=89
89 % 10 = 9
So 222045-72-9 is a valid CAS Registry Number.

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222045-72-9Relevant academic research and scientific papers

Synthesis of cyclic ethers via the palladium catalyzed intramolecular hydrocarbonation of alkoxyallenes

Kamijo, Shin,Yamamoto, Yoshinori

, p. 1747 - 1750 (2007/10/03)

The intramolecular hydrocarbonation of certain alkoxyallenes (1, 3 and 5), bearing active methine groups at the terminus of the carbon chain, proceeded smoothly in the presence of catalytic amounts of a palladium complex [Pd(OAc)2-dppb] to give

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