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517920-44-4

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517920-44-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 517920-44-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 5,1,7,9,2 and 0 respectively; the second part has 2 digits, 4 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 517920-44:
(8*5)+(7*1)+(6*7)+(5*9)+(4*2)+(3*0)+(2*4)+(1*4)=154
154 % 10 = 4
So 517920-44-4 is a valid CAS Registry Number.

517920-44-4Downstream Products

517920-44-4Relevant articles and documents

A uniquely accessible route to the diastereoselective synthesis of azetine derivatives

Ambhaikar, Narendra B.,Herold, Marike,Liotta, Dennis C.

, p. 217 - 222 (2007/10/03)

In the diastereoselective additions of chlorotitanium enolate of N-propionylthiazolidine-2-thione (2) to nitriles via the corresponding N-metalloaldimines (Al, B, Zr as metals), thiazolidine-2-thioneazetines (3) are preferentially formed over the dihydropyrimidinones (4), with the ratios of compounds (3/4) ranging from 5:1 to 17:1 (for R = phenyl, 1-naphthyl and 2-thienyl).

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