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116608-28-7

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116608-28-7 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 116608-28-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,1,6,6,0 and 8 respectively; the second part has 2 digits, 2 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 116608-28:
(8*1)+(7*1)+(6*6)+(5*6)+(4*0)+(3*8)+(2*2)+(1*8)=117
117 % 10 = 7
So 116608-28-7 is a valid CAS Registry Number.

116608-28-7Relevant articles and documents

Intramolecular Free Radical Cyclisations onto Enol Ethers. A General Synthesis of α-Alkyl-β-oxy- and α-Methylene-β-oxy-γ-butyrolactones

Begley, Michael J.,Landlow, Mark,Pattenden, Gerald

, p. 1095 - 1106 (2007/10/02)

Radical cyclisation of the enol ether bromoacetals (26), (28a-c), (29), and (37) in the presence of tributylstannane, produces precursors to the β-oxy-γ-butyrolactones (33), (34a-c), (35), and the α-methylene-β-oxy-γ-butyrolactone (39) in high overall yields.By contrast, treatment of (26) and (28a-b) with the cobalt(I) reagent derived from bis(dimethylglyoximato)(pyridine)cobalt(III) chloride (40), followed by oxidation of the intermediates (43) leads to the corresponding unsaturated β-oxy-γ-butyrolactones (42).

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