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81665-29-4

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81665-29-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 81665-29-4 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 8,1,6,6 and 5 respectively; the second part has 2 digits, 2 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 81665-29:
(7*8)+(6*1)+(5*6)+(4*6)+(3*5)+(2*2)+(1*9)=144
144 % 10 = 4
So 81665-29-4 is a valid CAS Registry Number.

81665-29-4Relevant articles and documents

LEWIS ACID MEDIATED ALLYLATION OF 2-ALKANOYL-1,4-QUINONES WITH ALLYLSILANE AND ALLYLSTANNANE

Naruta, Yoshinori,Uno, Hidemitsu,Maruyama, Kazuhiro

, p. 5221 - 5224 (2007/10/02)

Allyltrimethylstannane reacts with 2-alkanoyl-1,4-quinones regioselectively to afford conjugate addition products which can be derived to 2-alkanoyl-3-allylhydroquinone diacetate, while allyltriphenylsilane reacts with the quinone to give naphthofuran.

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