200940-22-3 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 200940-22-3 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,0,0,9,4 and 0 respectively; the second part has 2 digits, 2 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 200940-22:
(8*2)+(7*0)+(6*0)+(5*9)+(4*4)+(3*0)+(2*2)+(1*2)=83
83 % 10 = 3
So 200940-22-3 is a valid CAS Registry Number.
200940-22-3Relevant articles and documents
A simple method for the synthesis of unsymmetrical ureas
Kitteringham,Shipton,Voyle
, p. 1937 - 1943 (2007/10/03)
A simple one pot procedure for the synthesis of N,N'-unsymmetrical ureas using phenyl chloroformate in THF is described.
