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60420-20-4

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60420-20-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 60420-20-4 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 6,0,4,2 and 0 respectively; the second part has 2 digits, 2 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 60420-20:
(7*6)+(6*0)+(5*4)+(4*2)+(3*0)+(2*2)+(1*0)=74
74 % 10 = 4
So 60420-20-4 is a valid CAS Registry Number.

60420-20-4Relevant articles and documents

Diazabicycloalkanes with nitrogen atoms in the nodal positions. 8. Effect of c-substituents on the N-methylation of 1,4-diazabi cyclo[2.2.2]octanes and the demethylation of their bisquaternary salts

Vysochin,Shishkin

, p. 196 - 201 (1982)

The introduction of substituents with various inductive constants in the 2 position of the diazabicyclo]2.2.2]octane ring gives rise to a change in the pKa values and affects the ease of introduction of a methyl group in the 1 and 4 positions, as well as the rate of demethylation of the bisquaternary salts from the 1 position. When 1,4-diazabicyclo[2.2.2]octane is treated with a sufficiently strong nucleophile, the ring is opened to give a piperazine derivative.

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