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7-chloro-4-hydroxyhept-2-ynoic acid methyl ester is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.

439579-57-4

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439579-57-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 439579-57-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 4,3,9,5,7 and 9 respectively; the second part has 2 digits, 5 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 439579-57:
(8*4)+(7*3)+(6*9)+(5*5)+(4*7)+(3*9)+(2*5)+(1*7)=204
204 % 10 = 4
So 439579-57-4 is a valid CAS Registry Number.

439579-57-4Relevant academic research and scientific papers

Samarium(II) iodide-mediated intramolecular conjugate additions of alpha,beta-unsaturated lactones.

Molander, Gary A,St Jean Jr., David J

, p. 3861 - 3865 (2002)

Samarium(II) iodide, in the presence of catalytic amounts of nickel(II) iodide, has been used to promote intramolecular conjugate additions of alkyl halides onto alpha,beta-unsaturated lactones. This process has been shown to be applicable to a number of alpha,beta-unsaturated lactones, including tetrasubstituted olefins, and has been demonstrated to be quite general for the formation of saturated bicyclic and tricyclic lactones. The method presented herein provides a mild, efficient process to form structurally complex lactones from simple precursors.

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