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42070-73-5

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42070-73-5 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 42070-73-5 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 4,2,0,7 and 0 respectively; the second part has 2 digits, 7 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 42070-73:
(7*4)+(6*2)+(5*0)+(4*7)+(3*0)+(2*7)+(1*3)=85
85 % 10 = 5
So 42070-73-5 is a valid CAS Registry Number.

42070-73-5Relevant articles and documents

Chiroptical Studies of Bicyclic α-Diketones

Polonski, Tadeusz,Dauter, Zbigniew

, p. 1781 - 1788 (2007/10/02)

On the basis of crystallographic analysis it was established that the α-diketone chromophore in bicycloheptane-2,3-diones is planar.C. d. studies of some bicyclic compounds show that the c. d. sign for long-wavelength transition is governed by the octant rule with signs opposite to that known for ketones.The vicinal effect of substituents with the same location in space strongly influences the magnitude of the Cotton effect, but not its sign.

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