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109071-39-8

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109071-39-8 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 109071-39-8 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,0,9,0,7 and 1 respectively; the second part has 2 digits, 3 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 109071-39:
(8*1)+(7*0)+(6*9)+(5*0)+(4*7)+(3*1)+(2*3)+(1*9)=108
108 % 10 = 8
So 109071-39-8 is a valid CAS Registry Number.

109071-39-8Relevant articles and documents

Photoreactions of Succinimides with an N-Acyl Group in the Side Chain. Synthesis and Stereochemistry of Tricyclic Pyrrolopyrazine Ring Systems

Takechi, Haruko,Tateuchi, Sumiko,Machida, Minoru,Nishibata, Yoshihiko,Aoe, Keiichi,et al.

, p. 3142 - 3152 (2007/10/02)

Photocyclization of succinimides with an N-acyl group in the side chain gave bi- and tricyclic pyrrolopyrazines, some of which were converted to tricyclic amines by reduction.The stereochemistry of pyrrolopyrazine derivatives is discussed on the basis of the results of X-ray analysis and carbon-13 nuclear magnetic resonance spectroscopy.Keywords - succinimide; photocyclization; pyrrolo-pyrazine; hydrogen abstraction; X-ray analysis; 13C-NMR spectrum; tricyclic diamine

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