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142011-03-8

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142011-03-8 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 142011-03-8 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,4,2,0,1 and 1 respectively; the second part has 2 digits, 0 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 142011-03:
(8*1)+(7*4)+(6*2)+(5*0)+(4*1)+(3*1)+(2*0)+(1*3)=58
58 % 10 = 8
So 142011-03-8 is a valid CAS Registry Number.

142011-03-8Downstream Products

142011-03-8Relevant articles and documents

Oxygenated phenanthrenes via quinol ketals: Cyclization vs. migration

Morrow, Gary W.,Marks, Tina M.,Sear, Debra L.

, p. 10115 - 10124 (2007/10/02)

2-methoxyphenanthrenes were prepared by reaction of lithiated 2-bromostyrenes with quinone monoketals followed by acid-mediated cyclization of the resulting p-arylquinol ketals. Substitution at the bromostyrene side-chain or the quinone monoketal ring had only a modest effect on yields, but oxygen substitution on the bromostyrene aromatic nucleus resulted in a competing 1,2-aryl migration arising during the quinol ketal cyclization step. The extent of this rearrangement was found to be a function of the Lewis acid/solvent system employed.

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