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97431-35-1

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97431-35-1 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 97431-35-1 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 9,7,4,3 and 1 respectively; the second part has 2 digits, 3 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 97431-35:
(7*9)+(6*7)+(5*4)+(4*3)+(3*1)+(2*3)+(1*5)=151
151 % 10 = 1
So 97431-35-1 is a valid CAS Registry Number.

97431-35-1Downstream Products

97431-35-1Relevant articles and documents

Synthesis of +(1.1.1)>X- Cryptates Assisted by Intramolecular Hydrogen Bonding

Anelli, Pier Lucio,Montanari, Fernando,Quici, Silvio

, p. 3453 - 3457 (2007/10/02)

Condensation of diazacoronand and diethylene glycol bis(methanesulfonate)as well as with its alkylsubstituted derivatives in the presence of 1 molar equiv of BuLi or KH gives the corresponding +(1.1.1)>X- cryptates in 31-43percent yields.Experimental results indicate that in the intermediate monosubstituted diazacoronand, the NH hydrogen plays a templating role, thus favoring the bicyclic ring closure by intramolecular hydrogen bonding.Similar base-promoted condensations of and diazacoronands with triethylene glycol bis(methanesulfonates) afford and cryptates in 20-35percent yields.

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