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94530-20-8

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94530-20-8 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 94530-20-8 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 9,4,5,3 and 0 respectively; the second part has 2 digits, 2 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 94530-20:
(7*9)+(6*4)+(5*5)+(4*3)+(3*0)+(2*2)+(1*0)=128
128 % 10 = 8
So 94530-20-8 is a valid CAS Registry Number.

94530-20-8Relevant articles and documents

Novel 3′-deoxy analogs of the anti-HBV agent entecavir: Synthesis of enantiomers from a single chiral epoxide

Ruediger, Edward,Martel, Alain,Meanwell, Nicholas,Solomon, Carola,Turmel, Brigitte

, p. 739 - 742 (2007/10/03)

A synthesis of novel 3′-deoxy analogs of the anti-HBV agent entecavir (BMS-200475) was devised using regioselective ring opening of suitable cyclopentene epoxides as the key step. This versatile approach afforded access to an enantiomeric pair of carbocyclic nucleosides from a single chiral intermediate.

Synthesis of (R)-4-Hydroxy-2-benzyloxymethylcyclopent-2-en-1-one from D-Glucose via Palladium(0)-catalysed Rearrangement of a Vinylic Epoxide Intermediate

Achab, Said,Cosson, Jean-Pierre,Das, Bhupesh C.

, p. 1040 - 1041 (2007/10/02)

The transformation of D-glucose into (R)-4-hydroxy-2-benzyloxymethylcyclopent-2-en-1-one (3), a potential chiral synthon for the antibiotic (-)-pentenomycin I (4), has been achieved via the intramolecular aldolisation-dehydration of the 2-hydroxy-4-oxo-aldehyde (9) which was obtained by two different routes, one of them involving palladium(0)-catalysed rearrangement of a vinylic epoxide intermediate.

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