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731-17-9

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731-17-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 731-17-9 includes 6 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 3 digits, 7,3 and 1 respectively; the second part has 2 digits, 1 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 731-17:
(5*7)+(4*3)+(3*1)+(2*1)+(1*7)=59
59 % 10 = 9
So 731-17-9 is a valid CAS Registry Number.

731-17-9Relevant articles and documents

Synthesis of CF3-substituted sulfoximines from sulfonimidoyl fluorides

Kowalczyk, Rafal,Edmunds, Andrew J. F.,Hall, Roger G.,Bolm, Carsten

, p. 768 - 771 (2011/04/24)

N-Protected trifluoromethyl-substituted sulfoximines have been prepared by treatment of sulfonimidoyl fluorides with a combination of the Ruppert-Prakash reagent (TMSCF3) and tetrabutyl ammonium fluoride (TBAF). The starting materials were accessed following two synthetic routes, and for each reaction sequence the substrate scope was evaluated. Accordingly, a wide variety of aryl-substituted products were obtained in moderate to good yield.

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