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73152-42-8

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73152-42-8 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 73152-42-8 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,3,1,5 and 2 respectively; the second part has 2 digits, 4 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 73152-42:
(7*7)+(6*3)+(5*1)+(4*5)+(3*2)+(2*4)+(1*2)=108
108 % 10 = 8
So 73152-42-8 is a valid CAS Registry Number.

73152-42-8Downstream Products

73152-42-8Relevant articles and documents

The activation of aminals and aminol ethers by sulfur dioxide and their reactions with electron rich aromatic compounds

Heaney, Harry,Papageorgiou, George,Wilkins, Robert F.

, p. 13361 - 13372 (1997)

Reactions of bis(dialkylamino)methanes and ethoxydialkylaminomethanes with nucleophilic aromatic heterocycles in the presence of sulfur dioxide result in the formation of the expected Mannich bases in good yields. Reactions of phenols are similarly activated by sulfur dioxide which lead to improved regioselectivity: in particular the reactions of 2,5-dimethylphenol result in the formation of 2-dialkylaminomethyl-3,6-dimethylphenol whereas reaction occurs at the I-position using the classical procedures.

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