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(2R,4aR,6S,9aS)-6-Ethyl-2-(4-methoxy-phenyl)-4a,6,9,9a-tetrahydro-4H-1,3,5-trioxa-benzocycloheptene is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.

217939-79-2

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217939-79-2 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 217939-79-2 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,1,7,9,3 and 9 respectively; the second part has 2 digits, 7 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 217939-79:
(8*2)+(7*1)+(6*7)+(5*9)+(4*3)+(3*9)+(2*7)+(1*9)=172
172 % 10 = 2
So 217939-79-2 is a valid CAS Registry Number.

217939-79-2Relevant academic research and scientific papers

Synthesis of medium-sized cyclic allylic ethers by ring-closing metathesis and subsequent elaboration to sub-units found in the brevetoxins and ciguatoxins

Clark, J. Stephen,Hamelin, Olivier,Hufton, Richard

, p. 8321 - 8324 (2007/10/03)

Saturated and unsaturated seven- and eight-membered cyclic ethers of the type found in the brevetoxins and ciguatoxins have been prepared in enantiomerically pure form in 10 steps from a readily available chiral pool material. The key steps in this sequence are ring-closing metathesis of allylic ethers, and subsequent elaboration of the cyclic allylic ether products by stereoselective epoxide formation and ring-opening.

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