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68066-60-4

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68066-60-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 68066-60-4 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 6,8,0,6 and 6 respectively; the second part has 2 digits, 6 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 68066-60:
(7*6)+(6*8)+(5*0)+(4*6)+(3*6)+(2*6)+(1*0)=144
144 % 10 = 4
So 68066-60-4 is a valid CAS Registry Number.

68066-60-4Relevant articles and documents

ELECTRONIC EFFECT OF THE CYCLOPENTADIENYL ANION AS A SUBSTITUENT. THE EFFECT OF THE ALKALI METAL CATION, SOLVENT AND COMPLEXING AGENTS ON 19F CHEMICAL SHIFTS OF m- AND p-FLUOROPHENYLCYCLOPENTADIENYL ANIONS

Ogorodnikova, N. A.,Koridze, A. A.,Gubin, S. P.

, p. 293 - 301 (1981)

Salts of the carbanions M+-, where M = Li, Na, and K, have been investigated by 19F NMR spectroscopy.The effect of the alkali metal cation, the coordinating ability of the solvent, complexing agents (TMEDA, crown-ethers), and concentration on the 19F chemical shifts has been studied.The results are discussed in terms of an equilibrium between tight and solvent-separated ion pairs.On the basis of 19F chemical shift data for Li+- in HMPA solution, the electronic effect of the C5H4- substituent as a "free ion" has been determined.

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