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4577-41-7

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4577-41-7 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 4577-41-7 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 4,5,7 and 7 respectively; the second part has 2 digits, 4 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 4577-41:
(6*4)+(5*5)+(4*7)+(3*7)+(2*4)+(1*1)=107
107 % 10 = 7
So 4577-41-7 is a valid CAS Registry Number.

4577-41-7Relevant articles and documents

An efficient and simple method for synthesis of 2,2-disubstituted-2H- chromenes by condensation of a phenol with a 1,1-disubstituted propargyl alcohol using BF3·Et2O as the catalyst

Madabhushi, Sridhar,Jillella, Raveendra,Godala, Kondal Reddy,Mallu, Kishore Kumar Reddy,Beeram, China Ramanaiah,Chinthala, Narsaiah

supporting information, p. 5275 - 5279 (2012/11/13)

An efficient and simple method for the synthesis of 2,2-disubstituted-2H- chromenes by one-step cyclocondensation of a phenol with a variety of 1,1-disubstituted propargyl alcohols using BF3·Et2O as the catalyst is described.

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