111457-23-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 111457-23-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,1,1,4,5 and 7 respectively; the second part has 2 digits, 2 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 111457-23:
(8*1)+(7*1)+(6*1)+(5*4)+(4*5)+(3*7)+(2*2)+(1*3)=89
89 % 10 = 9
So 111457-23-9 is a valid CAS Registry Number.
111457-23-9Relevant articles and documents
CYCLOADDITION REACTIONS OF ETHENESULFONIC ACID DERIVATIVES WITH NITRONES
Chanet-Ray, Josette,Vessiere, Roger,Zeroual, Abdellah
, p. 101 - 108 (2007/10/02)
The reaction of several derivatives of ethenesulfonic acid (CH2 = CX-SO2R; X = H; R = F, NEt2) with different nitrones have been investigated.Regiospecific cycloadditions are observed, the reactions lead to 4-substituted isoxazolidines whatever is the nit
