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79643-72-4

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79643-72-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 79643-72-4 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,9,6,4 and 3 respectively; the second part has 2 digits, 7 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 79643-72:
(7*7)+(6*9)+(5*6)+(4*4)+(3*3)+(2*7)+(1*2)=174
174 % 10 = 4
So 79643-72-4 is a valid CAS Registry Number.

79643-72-4Relevant articles and documents

Some Epoxide Ring-opening Reactions of αβ-Epoxysilanes

Davis, Anthony P.,Hughes, Gwyneth J.,Lowndes, Peter R.,Robbins, Catherine M.,Thomas, Elizabeth J.,Whitham, Gordon H.

, p. 1934 - 1941 (2007/10/02)

Epoxide ring-opening of 1,2-epoxy-1-trimethylsilylcyclohexane (3) has given a range of the 2-substituted 2-trimethylsilylcyclohexanols (4; X = H, OH, OMe, OCH2CH=CH2, Br, I, SCN) in which attack by nucleophile has occured at the carbon α to silicon.The products (4) have been transformed into a number of functionalised silanes, including the silyl-episulphide (9).Other epoxides which have been less extensively studied are the conformationally biased epoxysilanes (10) and (11), the eight-membered ring epoxysilanes (17) and (21) and the two stereoisomeric 2,3-epoxy-3-trimethylsilylpentanes (26) and (29).Epoxide ring-opening adducts were obtained after treatment with H+-MeOH in all cases except for compound (17), where the bicyclic alcohol (18) was formed by a transannular reaction.

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