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389607-98-1

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389607-98-1 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 389607-98-1 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 3,8,9,6,0 and 7 respectively; the second part has 2 digits, 9 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 389607-98:
(8*3)+(7*8)+(6*9)+(5*6)+(4*0)+(3*7)+(2*9)+(1*8)=211
211 % 10 = 1
So 389607-98-1 is a valid CAS Registry Number.

389607-98-1Relevant articles and documents

Stereo- and regioselectivity of cyclization reactions in conformationally restricted epoxy ketones: Evaluation of C- versus O-alkylation process

Crotti, Paolo,Badalassi, Fabrizio,Di Bussolo, Valeria,Favero, Lucilla,Pineschi, Mauro

, p. 8559 - 8572 (2007/10/03)

The intramolecular addition reaction of metal enolates of ketones to oxiranes has been applied to a series of epoxy ketones derived from cyclohexene oxide. γ-Hydroxy ketones (γ-HKs, C-alkylation products) or hydroxy enol ethers (HEEs, O-alkylation products) are obtained, depending on the nature of the cyclic transition state in each case involved and the application of the Fu?rst-Plattner rule. The formation of HEEs by reaction of the same epoxy ketones under acid conditions is also described. In some cases, regioconvergent or chemoselective processes are conveniently obtained.

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