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854139-16-5

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854139-16-5 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 854139-16-5 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 8,5,4,1,3 and 9 respectively; the second part has 2 digits, 1 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 854139-16:
(8*8)+(7*5)+(6*4)+(5*1)+(4*3)+(3*9)+(2*1)+(1*6)=175
175 % 10 = 5
So 854139-16-5 is a valid CAS Registry Number.

854139-16-5Relevant articles and documents

A method for synthesis of bicyclo[3.3.0]oct-1-en-3-ones from cyclobutanones with one-carbon ring expansion and its application to a formal synthesis of racemic 1-desoxyhypnophilin

Kashima, Hiroaki,Kawashima, Tadashi,Wakasugi, Daisuke,Satoh, Tsuyoshi

, p. 3953 - 3963 (2007/10/03)

A method for synthesis of 2-cyanobicyclo[3.3.0]oct-1-en-3-ones and 2-substituted bicyclo[3.3.0]oct-1-en-3-ones was developed by assembly of three components, cyclobutanones, chloromethyl p-tolyl sulfoxide, and nitriles, with one-carbon ring expansion of t

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