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(1R,2R,3S,4R)-4-O-acetyl-5-(benzoyloxymethyl)-3-O-(tert-butyldimethylsilyl)-1,2-O-cyclohexylidene-5-cyclohexene-1,2,3,4-tetrol is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.

203317-83-3

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203317-83-3 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 203317-83-3 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,0,3,3,1 and 7 respectively; the second part has 2 digits, 8 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 203317-83:
(8*2)+(7*0)+(6*3)+(5*3)+(4*1)+(3*7)+(2*8)+(1*3)=93
93 % 10 = 3
So 203317-83-3 is a valid CAS Registry Number.

203317-83-3Downstream Products

203317-83-3Relevant academic research and scientific papers

Enantiospecific syntheses of (+)-crotepoxide, (+)-boesenoxide, (+)-β- senepoxide, (+)-pipoxide acetate, (-)-iso-crotepoxide, (-)-senepoxide, and (- )-tingtanoxide from (-)-quinic acid

Shing,Tam

, p. 1547 - 1554 (2007/10/03)

A convenient strategy that is ideally suited for the Construction of all the naturally occurring cyclohexane diepoxides and cyclohexene epoxides is described. The key intermediate 12, a 1,3-cyclohexadiene, has been prepared from (-)-quinic acid in 11 steps with 18% overall yield: Singlet oxygen photooxygenation of the 1,3-cyclohexadiene followed by rearrangement of the resultant endoperoxides with either cobalt-meso-tetraphenylporphyrin or trimethyl phosphite afforded enantiopure (+)-crotepoxide, (+)-boesenoxide, and (-)-iso-crotepoxide or (-)-senepoxide, (+)-β-senepoxide, (+)-pipoxide acetate, and (-)-tingtanoxide, respectively.

First enantiospecific syntheses of crotepoxide and iso-crotepoxide from (-)-quinic acid

Shing, Tony K. M.,Tam, Eric K. W.

, p. 353 - 356 (2007/10/03)

The optically active crotepoxide 1 and iso-crotepoxide 2 have been constructed from quinic acid involving a singlet oxygen photooxygenation as the key step.

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