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191222-62-5

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191222-62-5 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 191222-62-5 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,9,1,2,2 and 2 respectively; the second part has 2 digits, 6 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 191222-62:
(8*1)+(7*9)+(6*1)+(5*2)+(4*2)+(3*2)+(2*6)+(1*2)=115
115 % 10 = 5
So 191222-62-5 is a valid CAS Registry Number.

191222-62-5Downstream Products

191222-62-5Relevant articles and documents

Stereochemistry and chiroptical spectra of 3-azabicyclo[3.1.0]hexan-2-ones and thiones

Milewska, Maria J.,Gdaniec, Maria,Polonski, Tadeusz

, p. 1267 - 1273 (1997)

Several optically active substituted 3-azabicyclo[3.1.0]hexan-2-ones and their thiocarbonyl analogues have been synthesized, and their circular dichroism spectra studied. The crystal structure of thiolactam la showed that the bicyclic skeleton of the title compounds assumes a sofa-like geometry. It is postulated that the cyclopropyl moiety and amide or thioamide group constitute an inherently chiral chromophore, helicity of which determines the Cotton effect sign corresponding to the n-π* electronic transition. The weak π-π* Cotton effect of thiolactams shows opposite sign to that observed for the lowest energy excitation.

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