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77681-35-7

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77681-35-7 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 77681-35-7 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,7,6,8 and 1 respectively; the second part has 2 digits, 3 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 77681-35:
(7*7)+(6*7)+(5*6)+(4*8)+(3*1)+(2*3)+(1*5)=167
167 % 10 = 7
So 77681-35-7 is a valid CAS Registry Number.

77681-35-7Downstream Products

77681-35-7Relevant articles and documents

Synthesis of podands bearing aromatic end groups and complex formation with tropylium tetrafluoroborate in 1,2-dichloroethane

Laemsae, Markku,Raitamaa, Kirsi,Pursiainen, Jouni

, p. 557 - 563 (1999)

A series of podands bearing phenyl, naphthyl and anthryl end groups were prepared and characterized. UV-visible spectrophotometry was used to investigate the host-guest chemistry of the podands in complexation with tropylium tetrafluoroborate in 1,2-dichloroethane. The results, are discussed and compared with those for previously studied systems containing crown ethers. The stability constants for these open-chain polyethers are in the range 5,1-8,4 dm3 mol-1, except for the podand having anthryl end groups [1,12 bis(anthryl-9)-2,5,8,11-tetraoxadodecane], which gives a 10-fold increase in the stability constant. Copyright

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