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65801-07-2

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65801-07-2 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 65801-07-2 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 6,5,8,0 and 1 respectively; the second part has 2 digits, 0 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 65801-07:
(7*6)+(6*5)+(5*8)+(4*0)+(3*1)+(2*0)+(1*7)=122
122 % 10 = 2
So 65801-07-2 is a valid CAS Registry Number.

65801-07-2Relevant articles and documents

Cation-anion CH?O- interactions in the metal-free phenolate, tetra-n-butylammonium phenol-phenolate

Goddard, Richard,Herzog, H.Martin,Reetz, Manfred T

, p. 7847 - 7850 (2002)

Deprotonation of phenol by tetra-n-butylammonium hydroxide and subsequent removal of water by P2O5 results in quantitative formation of tetra-n-butylammonium phenol-phenolate. The compound crystallizes as an ion pair, with the solute phenol molecule intimately attached to the phenolate anion by an O-H?O- hydrogen bond (O?O 2.471(5)?). A short contact between one α-C atom of the tetra-n-butylammonium cation and the phenolate O atom indicates that the ion pair interaction is strengthened by an additional C-H?O- hydrogen-bond, despite the attached phenol.

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