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67424-71-9

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67424-71-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 67424-71-9 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 6,7,4,2 and 4 respectively; the second part has 2 digits, 7 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 67424-71:
(7*6)+(6*7)+(5*4)+(4*2)+(3*4)+(2*7)+(1*1)=139
139 % 10 = 9
So 67424-71-9 is a valid CAS Registry Number.

67424-71-9Relevant articles and documents

EQUILIBRIA OF 2,5-DIMETHYL-1-PHENYL-1-THIOXO-4-PHOPHORINANONE STEREOISOMERS. CONFORMATIONAL ENERGIES OF THE SUBSTITUENTS IN PHOSPHORUS-CONTAINING HETEROCYCLES

Bosyakov, Yu. G.,Revenko, G. P.,Kuz'mina, N. Yu.,Logunov, A. P.

, p. 783 - 786 (2007/10/02)

The most preferable stereoisomers in series of vicinally substituted P-phenyl-4-phosphorinanones and phosphabicyclodecan-5-ones are those with an equatorial orientation of the phenyl group attached to the phosphorus atom.The conformational free energies of the methyl and phenyl substituents in these compounds are greater than in cyclohexane derivatives.

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