Cas 176686-65-0,2-Oxo-1-(5-trimethylsilanyl-pent-4-ynyl)-cyclohexanecarboxylic acid ethyl ester

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Check Digit Verification of cas no

The CAS Registry Mumber 176686-65-0 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,7,6,6,8 and 6 respectively; the second part has 2 digits, 6 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 176686-65:
(8*1)+(7*7)+(6*6)+(5*6)+(4*8)+(3*6)+(2*6)+(1*5)=190
190 % 10 = 0
So 176686-65-0 is a valid CAS Registry Number.

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176686-65-0Relevant academic research and scientific papers

Sequenced reactions with samarium(II) iodide. Tandem nucleophilic acyl substitution/ketyl-olefin coupling reactions

Molander, Gary A.,Harris, Christina R.

, p. 4059 - 4071 (1996)

Samarium(II) iodide has been employed to promote a tandem intramolecular nucleophilic acyl substitution/intramolecular ketyl-olefin coupling cyclization sequence, generating bicyclic, tricyclic, and spirocyclic ring systems in excellent yield and with high diastereoselectivity. This versatile reaction sequence allows entry to several different naturally occurring tricyclic systems containing the angular and linear triquinane framework.

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