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154660-49-8

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154660-49-8 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 154660-49-8 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,5,4,6,6 and 0 respectively; the second part has 2 digits, 4 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 154660-49:
(8*1)+(7*5)+(6*4)+(5*6)+(4*6)+(3*0)+(2*4)+(1*9)=138
138 % 10 = 8
So 154660-49-8 is a valid CAS Registry Number.

154660-49-8Relevant articles and documents

Molecular structure and conformation of the (Z) and (E) geometric isomers of 2-(2-phenylbenzylidene)-3 quinuclidinone

Santini, Antonello,Benedetti, Ettore,Pedone, Carlo,Giordano, Marialuisa,Caliendo, Giuseppe,Santagada, Vincenzo,Grieco, Paolo,Greco, Giovanni

, p. 1995 - 2008 (1995)

The crystal structures of the (Z) and (E) geometric isomers of 2-(2-phenylbenzylidene)-3-quinuclidinone were solved by direct methods, using diffractometric data, and refined to final R values of 0.040 and 0.061. The molecules of the (Z) and (E) geometric isomers show trans and cis conformation of the substituents around the double bond, respectively. The quinuclidine and the diphenyl moieties show deformations in their geometric and conformational parameters due to the need of releasing intramolecular strains and/or non-bonded interactions.

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