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85973-31-5

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85973-31-5 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 85973-31-5 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 8,5,9,7 and 3 respectively; the second part has 2 digits, 3 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 85973-31:
(7*8)+(6*5)+(5*9)+(4*7)+(3*3)+(2*3)+(1*1)=175
175 % 10 = 5
So 85973-31-5 is a valid CAS Registry Number.

85973-31-5Relevant articles and documents

The Synthesis of Some Highly Strained Pyrylium and N-Benzylpyridinium Salts and Kinetics of their Reactions with Piperidine

Katritzky, Alan R.,Marson, Charles M.,Thind, Sukhpal S.,Ellison, Joan

, p. 487 - 496 (2007/10/02)

5,8-Dimethyl-1-tetralone (11) yields the hindered pyrylium salts (12)-(14), which give the corresponding pyridines and pyridinium salts with ammonia and amines.Chroman-4-one affords the oxoniaphenanthrene perchlorate (17).The additional steric hindrance f

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