457054-84-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 457054-84-1 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 4,5,7,0,5 and 4 respectively; the second part has 2 digits, 8 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 457054-84:
(8*4)+(7*5)+(6*7)+(5*0)+(4*5)+(3*4)+(2*8)+(1*4)=161
161 % 10 = 1
So 457054-84-1 is a valid CAS Registry Number.
457054-84-1Relevant articles and documents
Efficient synthesis of medium-sized cyclic amines by means of 2-nitrobenzenesulfonamide
Kan, Toshiyuki,Kobayashi, Hideki,Fukuyama, Tohru
, p. 697 - 699 (2002)
Construction of medium-sized cyclic amines using 2-nitrobenzenesulfonamides is described. Under either conventional alkylation or Mitsunobu reaction conditions, the cyclization reaction proceeded efficiently to give eight- to ten-membered rings.