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2-Ethyl-4-((2R,4aR,7R,8aS)-2-phenyl-tetrahydro-pyrano[4,3-d][1,3]dioxin-7-yl)-butyric acid ethyl ester is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.

91703-99-0

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91703-99-0 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 91703-99-0 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 9,1,7,0 and 3 respectively; the second part has 2 digits, 9 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 91703-99:
(7*9)+(6*1)+(5*7)+(4*0)+(3*3)+(2*9)+(1*9)=140
140 % 10 = 0
So 91703-99-0 is a valid CAS Registry Number.

91703-99-0Relevant academic research and scientific papers

SPIROKETALS: A TOTAL SYNTHESIS OF (+/-)-TALAROMYCIN B VIA A STEREOSELECTIVE CATION-OLEFIN CYCLISATION STEP

Kay, I.Trevor,Bartholomew, David

, p. 2035 - 2038 (1984)

The acid catalysed rearrangement of an acetal derived from 2-hydroxymethyl-3-butene-1-ol proceeding via an intramolecular cation-olefin cyclisation provides acces to a 4-hydroxytetrahydropyran and thence to (+/-)-talaromycin B.

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