128721-81-3 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 128721-81-3 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,2,8,7,2 and 1 respectively; the second part has 2 digits, 8 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 128721-81:
(8*1)+(7*2)+(6*8)+(5*7)+(4*2)+(3*1)+(2*8)+(1*1)=133
133 % 10 = 3
So 128721-81-3 is a valid CAS Registry Number.
128721-81-3Relevant articles and documents
Allylation of N-Sulfonyl Imines Produced in Situ From Aldehydes and N-Sulfinyl-p-toluenesulfonamide
Ralbovsky, Janet L.,Kinsella, Mary A.,Sisko, Joseph,Weinreb, Steven M.
, p. 573 - 579 (2007/10/02)
Aliphatic and aromatic aldehydes react with N-sulfinyl-p-toluenesulfonamide and an allyl silane in the presence of a Lewis acid to afford homoallylic sulfonamides.
