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7137-91-9

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7137-91-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 7137-91-9 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 7,1,3 and 7 respectively; the second part has 2 digits, 9 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 7137-91:
(6*7)+(5*1)+(4*3)+(3*7)+(2*9)+(1*1)=99
99 % 10 = 9
So 7137-91-9 is a valid CAS Registry Number.

7137-91-9Downstream Products

7137-91-9Relevant articles and documents

THE 3,4-DIHYDRO-N-OXO-3-ETHYL-2,1-BENZOXAZINIUM CATION IN THE SYNTHESIS OF β- AND γ-SUBSTITUTED ARYLBUTANES AND 1-ARYL-2-BUTENES

Trofimova, E. V.,Fedotov, A. N.,Mochalov, S. S.,Shabarov, Yu. S.,Zefirov, N. S.

, p. 463 - 466 (2007/10/02)

The reaction of 3,4-dihydro-N-oxo-3-ethyl-2,1-benzoxazinum salts with reagents with nucleophilic and basic character can be used to obtain β- or γ-substituted arylbutanes and trans-1-aryl-2-butenes.The reactions proceed regiospecifically and are regulated

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