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156220-42-7

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156220-42-7 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 156220-42-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,5,6,2,2 and 0 respectively; the second part has 2 digits, 4 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 156220-42:
(8*1)+(7*5)+(6*6)+(5*2)+(4*2)+(3*0)+(2*4)+(1*2)=107
107 % 10 = 7
So 156220-42-7 is a valid CAS Registry Number.

156220-42-7Downstream Products

156220-42-7Relevant articles and documents

Oxidation of Alkylthio Substituted Tricarbonyl(η6-arene)chromium(0) Complexes to Alkylsulfinyl Substituted Tricarbonyl(η6-arene)chromium(0) Complexes

Perez-Encabo, Alfonso,Perrio, Stephane,Slawin, Alexandra M. Z.,Thomas, Susan E.,Wierzchleyski, Adam T.,Williams, David J.

, p. 629 - 642 (2007/10/02)

Dimethyldioxirane efficiently oxidises tricarbonylchromium(0) complexes of alkylthio substituted arenes to tricarbonylchromium(0) complexes of alkylsulfinyl substituted arenes.The diastereoselectivity of oxidation of ortho substituted complexes, which was determined by inter alia X-ray crystal structure analyses of tricarbonyl6-1-methoxy-2-(methylsulfinyl)benzene>-chromium(0) 20x, 6-1-(tert-butylsulfinyl)-2-methoxybenzene>tricarbonylchromium(0) 23x and tricarbonyl6-1-(ethylsulfinyl)-2-methoxybenzene)chromium(0) 21y, is dependent on the alkylthio substituent and is reversed when this substituent is changed from methylthio to tert-butylthio.

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