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167280-05-9

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167280-05-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 167280-05-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,6,7,2,8 and 0 respectively; the second part has 2 digits, 0 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 167280-05:
(8*1)+(7*6)+(6*7)+(5*2)+(4*8)+(3*0)+(2*0)+(1*5)=139
139 % 10 = 9
So 167280-05-9 is a valid CAS Registry Number.

167280-05-9Relevant articles and documents

Reactions of 1,2-thiazetidine 1,1-dioxides with organometallics: β- elimination and N-S bond cleavage

Iwama, Tetsuo,Kataoka, Tadashi,Muraoka, Osamu,Tanabe, Genzoh

, p. 5507 - 5522 (1998)

Reactions of 4-nonsubstituted β-sultams 1 with methyllithium gave only (E)-vinylsulfonamides 2, whereas 2-aminoethyl sulfones 3 were obtained as minor products by use of methylmagnesium bromide. Reactions of 4- monosubstituted β-sultams 6 with organolithiums gave (E)-vinylsulfonamides 7 stereoselectively regardless of the configuration of 3- and 4-substituents. Treatment of 4,4-dimethyl-β-sultam 8a with methylmagnesium bromide and methyllithium provided 2-aminoethyl sulfone 9 and bis-sulfone 10, respectively, and isopropyl phenyl sulfone 11 was obtained by use of phenyllithium or phenylmagnesium bromide.

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