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20444-00-2

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20444-00-2 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 20444-00-2 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,0,4,4 and 4 respectively; the second part has 2 digits, 0 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 20444-00:
(7*2)+(6*0)+(5*4)+(4*4)+(3*4)+(2*0)+(1*0)=62
62 % 10 = 2
So 20444-00-2 is a valid CAS Registry Number.

20444-00-2Relevant articles and documents

1-(2,6-Dichlorophenyl)ethylamine: A new and efficient chiral auxiliary for the Staudinger β-lactam synthesis

Hashimoto, Yukihiko,Kai, Akiyoshi,Saigo, Kazuhiko

, p. 8821 - 8824 (2007/10/02)

The diastereoselective synthesis of β-lactams by the Staudinger reaction was examined using chiral imines, derived from substituted 1-phenylethylamines. Among them, 1-(2,6-dichlorophenyl)ethylamine was found to be a new and efficient chiral auxiliary, and the corresponding cis-β-lactams were obtained in good to excellent yields with high diastereoselectivity.

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