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74357-26-9

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74357-26-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 74357-26-9 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,4,3,5 and 7 respectively; the second part has 2 digits, 2 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 74357-26:
(7*7)+(6*4)+(5*3)+(4*5)+(3*7)+(2*2)+(1*6)=139
139 % 10 = 9
So 74357-26-9 is a valid CAS Registry Number.

74357-26-9Relevant articles and documents

Steric Effects in Photochemical Cycloadditions of 9-Phenanthrenecarboxylates

Itoh, Hiroki,Shibata, Hirofumi,Wagatsuma, Marie,Nanjoh, Mari,Senda, Yasuhisa,et al.

, p. 340 - 343 (2007/10/02)

Efficiency of photochemical intramolecular and intermolecular cycloadditoin of 9-phenanthrenecarboxylate-anethole systems is dependent on the structure of anethole moiety.Reduction in reactivity of the anethole moiety by steric effects is explained in terms of decrease in coefficients of frontier orbitals on the double bond due to twisting of the anisyl moiety.

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