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139210-92-7

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139210-92-7 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 139210-92-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,9,2,1 and 0 respectively; the second part has 2 digits, 9 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 139210-92:
(8*1)+(7*3)+(6*9)+(5*2)+(4*1)+(3*0)+(2*9)+(1*2)=117
117 % 10 = 7
So 139210-92-7 is a valid CAS Registry Number.

139210-92-7Downstream Products

139210-92-7Relevant articles and documents

PRODUCTION OF 2-FURYLCYCLANONES BY DIENE SYNTHESIS

Tolstikov, G. A.,Shul'ts, E.E.,Safarova, G.M.,Spirikhin, L.V.,Panasenko, A.A.

, p. 1110 - 1119 (2007/10/02)

The diene synthesis reaction with the new highly active dienes 1-(2-furyl)- and (5-methyl-2-furyl)-3-trimethylsilyloxybutadienes and various dienophiles is a convenient method for the production of 2-furylcyclanones.It was established that the cycloaddition of the above-mentioned dienes to unsymmetrical dienophiles is highly regioselective.

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