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263138-69-8

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263138-69-8 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 263138-69-8 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,6,3,1,3 and 8 respectively; the second part has 2 digits, 6 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 263138-69:
(8*2)+(7*6)+(6*3)+(5*1)+(4*3)+(3*8)+(2*6)+(1*9)=138
138 % 10 = 8
So 263138-69-8 is a valid CAS Registry Number.

263138-69-8Relevant articles and documents

The synthesis of isochroman-4-ols and isochroman-3-ols: Models for naturally occurring benzo[g]isochromanols

De Koning, Charles B,Green, Ivan R,Michael, Joseph P,Oliveira, José R

, p. 9623 - 9634 (2007/10/03)

The synthesis of isochromanes containing hydroxy substituents at the 4- and 3-positions has been achieved. The key step for the synthesis of the isochroman-4-ols entailed an oxidative mercury mediated ring closure of 2-(prop-1-enyl)phenylmethanol derivati

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