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260260-97-7

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260260-97-7 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 260260-97-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,6,0,2,6 and 0 respectively; the second part has 2 digits, 9 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 260260-97:
(8*2)+(7*6)+(6*0)+(5*2)+(4*6)+(3*0)+(2*9)+(1*7)=117
117 % 10 = 7
So 260260-97-7 is a valid CAS Registry Number.

260260-97-7Relevant articles and documents

Stereoselective synthesis of 1,2,3-triazolooxazine and fused 1,2,3-triazolo-d-lactone derivatives

Gümü, Ayegül,Mert, Kudret,Tanyeli, Cihangir

, p. 1340 - 1344 (2015/01/09)

The stereoselective synthesis of 1,2,3-triazolooxazine and fused 1,2,3-triazolo-d-lactone by applying chemoenzymatic methods is described. trans-2-Azidocyclohexanol was successfully resolved by Novozyme 435 with an ee value of 99%. Installation of the alkyne moiety on the enantiomerically enriched azidoalcohol by O-alkylation, followed by intramolecular azide-alkyne [3+2] cycloaddition resulted in the desired 1,2,3-triazolooxazine derivative. Enantiomerically pure azidocyclohexanol was also subjected to the Huisgen 1,3-dipolar cycloaddition reaction with dimethylacetylene dicarboxylate, followed by intramolecular cyclization of the corresponding cycloadduct, to furnish a fused 1,2,3-triazolod-λ-lactone.

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