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32548-16-6

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32548-16-6 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 32548-16-6 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 3,2,5,4 and 8 respectively; the second part has 2 digits, 1 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 32548-16:
(7*3)+(6*2)+(5*5)+(4*4)+(3*8)+(2*1)+(1*6)=106
106 % 10 = 6
So 32548-16-6 is a valid CAS Registry Number.

32548-16-6Relevant articles and documents

NHC-Catalyzed Deamination of Primary Sulfonamides: A Platform for Late-Stage Functionalization

Fier, Patrick S.,Maloney, Kevin M.

supporting information, p. 1441 - 1445 (2019/01/30)

Herein we describe the development and application of a method for the mild, late-stage conversion of primary sulfonamides to several other other functional groups. These reactions occur via initial reductive deamination of sulfonamides to sulfinates via an NHC-catalyzed reaction of transiently formed N-sulfonylimines. The method described here is tolerant of nearly all common functional groups, as exemplified by the late-stage derivatization of several complex pharmaceutical compounds. On the basis of the prevalence of sulfonamide-containing drugs and building blocks, we have developed a method to enable sulfonamides to be applied as versatile synthetic handles for synthetic chemsitry.

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