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Benzoic acid (1S,2S,3R,6S)-2-acetoxy-3-hydroxy-7-oxa-bicyclo[4.1.0]hept-4-en-1-ylmethyl ester is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.

203457-70-9

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203457-70-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 203457-70-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,0,3,4,5 and 7 respectively; the second part has 2 digits, 7 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 203457-70:
(8*2)+(7*0)+(6*3)+(5*4)+(4*5)+(3*7)+(2*7)+(1*0)=109
109 % 10 = 9
So 203457-70-9 is a valid CAS Registry Number.

203457-70-9Relevant 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.

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