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188789-39-1

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188789-39-1 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 188789-39-1 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,8,8,7,8 and 9 respectively; the second part has 2 digits, 3 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 188789-39:
(8*1)+(7*8)+(6*8)+(5*7)+(4*8)+(3*9)+(2*3)+(1*9)=221
221 % 10 = 1
So 188789-39-1 is a valid CAS Registry Number.

188789-39-1Downstream Products

188789-39-1Relevant articles and documents

2-Aza-3-Oxabicyclo[2.2.1]heptene hydrochloride: An exceptionally versatile synthon for carbocyclic sugars and nucleosides

Ranganathan, Subramania,George, K. Shaji

, p. 3347 - 3362 (2007/10/03)

The transformation of cyclopentadiene to 5'-desmethylene 1'-aza carbocyclic sugars has been achieved in four steps: 1. Cycloaddition of chloronitrosocyclohexane to 2-aza-3-oxabicyclo[2.2.1]heptene hydrochloride in EtOH-Et2O, 2. Nitrogen functionalization, 3. cis hydroxylation and 4. N-O bond cleavage. The protocols provided enable practical access to a range of 5'-desmethylene carbocyclic sugar analogs whose utility has been illustrated with synthesis of a novel 5'-desmethylene analog of aristeromycin.

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