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2,3,4,6-tetra-O-acetyl-1-deoxy-1-methylene-5a-carba-D-glucopyranose is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.

219623-01-5

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219623-01-5 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 219623-01-5 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,1,9,6,2 and 3 respectively; the second part has 2 digits, 0 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 219623-01:
(8*2)+(7*1)+(6*9)+(5*6)+(4*2)+(3*3)+(2*0)+(1*1)=125
125 % 10 = 5
So 219623-01-5 is a valid CAS Registry Number.

219623-01-5Relevant articles and documents

Synthetic strategies directed towards 5a-carbahexopyranoses and derivatives based on 6-endo-trig radical cyclizations

Gomez, Ana M.,Uriel, Clara,Company, Maria D.,Lopez, J. Cristobal

experimental part, p. 7116 - 7132 (2012/01/06)

Several synthetic strategies directed towards 5a-carbahexopyranoses and based on 6-endo-trig radical cyclization of unsaturated carbohydrate derivatives have been devised. Three elements for regiocontrol to optimize the 6-endo/5-exo ratio have been incorporated, and their efficiencies in directing 6-endo cyclizations have been evaluated. These elements - namely: i) the incorporation of a substituent at C-5 (radical numbering), ii) the use of a vinyl (rather than alkyl) radical, and iii) the inclusion of ring strain in the system - have proved useful when used in combination. The simultaneous presence of two of them also results in 6-endo selectivity. On another topic, the ozonation of the ensuing alkenylstananes to afford diols seems to be based on a tin-oxygen rearrangement, similar to that reported for related vinylsilanes, rather than on remarkable stabilities of tin-containing primary ozonides as we had previously suggested.

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