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97821-21-1

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97821-21-1 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 97821-21-1 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 9,7,8,2 and 1 respectively; the second part has 2 digits, 2 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 97821-21:
(7*9)+(6*7)+(5*8)+(4*2)+(3*1)+(2*2)+(1*1)=161
161 % 10 = 1
So 97821-21-1 is a valid CAS Registry Number.

97821-21-1Relevant articles and documents

Synthesis of six-membered cyclic sulfonimidamides

Sen, Indira,Kloer, Daniel,Hall, Roger,Pal, Sitaram

, p. 3018 - 3028 (2013/11/06)

A general synthetic route to six-membered cyclic N-aryl- and N-alkyl-substituted sulfonimidamides via an intramolecular ring closure of suitably functionalised acyclic sulfonimidamides is described. The structure of this new ring system was confirmed by v

Mild and general method for the synthesis of sulfonamides

Garcia Ruano, Jose Luis,Parra, Alejandro,Yuste, Francisco,Mastranzo, Virginia M.

, p. 311 - 319 (2008/12/22)

Reaction of methyl sulfinates with lithium amides followed by 3-chloroperoxybenzoic acid oxidation of the resulting sulfinamides provides primary, secondary, and tertiary alkane-, arene-and heteroarenesulfonamides in high yields. This constitutes a mild and facile experimental protocol that avoids the use of hazardous, unstable, or volatile reagents and does not affect the configurational stability of the amines. Georg Thieme Verlag Stuttgart.

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