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261511-22-2

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261511-22-2 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 261511-22-2 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,6,1,5,1 and 1 respectively; the second part has 2 digits, 2 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 261511-22:
(8*2)+(7*6)+(6*1)+(5*5)+(4*1)+(3*1)+(2*2)+(1*2)=102
102 % 10 = 2
So 261511-22-2 is a valid CAS Registry Number.

261511-22-2Relevant articles and documents

Synthesis of 2′,3′-modified carbocyclic L -nucleoside analogues

Jessel, Soenke,Meier, Chris

, p. 1702 - 1713 (2011/05/04)

New divergent approaches to 2′,3′-modified carbocyclic L-nucleoside analogues starting from enantiomerically pure (1R,2S)- or (1S,2R)-2-(benzyloxymethyl)cyclopent-3-enol are described. In the key step, stereochemically pure cyclopentanols were condensed with N3-protected thymine through a modified Mitsunobu protocol. Moreover, several routes to different cyclopentanol derivatives, to prepare carbocyclic L-2′,3′-didehydro- 2′,3′-dideoxynucleosides (L-d4N), L-2′,3′- dideoxynucleosides (L-ddN), and L-ribonucleosides are reported. Copyright

Mechanism and applications of lithium amide-induced asymmetric rearrangements of 4-substituted and 4,4-disubstituted cyclopentene oxides to cyclopentenols

Hodgson, David M.,Gibbs, Andrew R.,Drew, Michael G. B.

, p. 3579 - 3590 (2007/10/03)

The preparation and lithium amide-induced rearrangements of 1,2-dideuterated 4-substituted cyclopentene oxides 11 and 19 are described, providing insight into the deprotonation mechanisms operating in such systems. Highly enantioselective syntheses of 4-substituted cis-4-hydroxymethylcyclopent-2-en-1-ols 32a-c are described. Also described are asymmetric syntheses of prostaglandin precursor 40 and (+)-iridomyrmecin (48) via highly enantioselective rearrangement of the epoxide 3 and subsequent Ireland-Claisen rearrangement. The Royal Society of Chemistry 1999.

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