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<18>5(2,2')Triphenylmethano.24coronand-5>20-ol is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.

97990-53-9

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97990-53-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 97990-53-9 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 9,7,9,9 and 0 respectively; the second part has 2 digits, 5 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 97990-53:
(7*9)+(6*7)+(5*9)+(4*9)+(3*0)+(2*5)+(1*3)=199
199 % 10 = 9
So 97990-53-9 is a valid CAS Registry Number.

97990-53-9Relevant academic research and scientific papers

Carbocations, Carbanions, and Carbenes as Ring Members of Crown Ethers

Itter, Franz-Albert von,Voegtle, Fritz

, p. 2300 - 2313 (2007/10/02)

Di- and triarylmethyl crown ethers containing carbocations (3a,b), carbanions (4a - c), and carbene centers (5) are synthesized.Starting with the benzophenono crown 2a, the carbinols 8a,b and the carbenium ligands 3a,b were prepared.Their thermodynamic st

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