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259799-90-1

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259799-90-1 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 259799-90-1 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,5,9,7,9 and 9 respectively; the second part has 2 digits, 9 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 259799-90:
(8*2)+(7*5)+(6*9)+(5*7)+(4*9)+(3*9)+(2*9)+(1*0)=221
221 % 10 = 1
So 259799-90-1 is a valid CAS Registry Number.

259799-90-1Relevant articles and documents

An efficient method to chiral β-hydroxy acids: Synthesis of lipid-A side chain

Nandanan,Phukan, Prodeep,Sudalai

, p. 893 - 896 (2007/10/03)

The synthesis of optically active β-hydroxy acids 5a-c is achieved in four steps from their corresponding terminal olefins 1a-c by employing Sharpless asymmetric dihydroxylation. The regioselective ring opening of chiral cyclic sulfites 3a-c with cyanide ion, constitutes the key reaction, thus producing the hydroxy nitriles 4a-c.

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