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140149-21-9

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140149-21-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 140149-21-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,4,0,1,4 and 9 respectively; the second part has 2 digits, 2 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 140149-21:
(8*1)+(7*4)+(6*0)+(5*1)+(4*4)+(3*9)+(2*2)+(1*1)=89
89 % 10 = 9
So 140149-21-9 is a valid CAS Registry Number.

140149-21-9Downstream Products

140149-21-9Relevant articles and documents

Multiple-Bridged Triphenylmethanes

Berscheid, Ralf,Nieger, Martin,Voegtle, Fritz

, p. 1687 - 1696 (2007/10/02)

Up to fourfold-bridged macrocyclic compounds bearing triphenylmethane units which form a large molecular cavity were prepared for the first time.The macrobicyclus 4 crystallizes from acetonitrile as 1:1 adduct and from phenylacetonitrile as 1:3 adduct with the respective solvent.The X-ray structures of these complexes are compared with the related 1:5 adduct of 13 with benzene. Key Words: Host-Guest chemistry / Inclusion compounds / Macropolycyclic compounds / Heterocyclic compounds / Supramolecular chemistry

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