203791-03-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 203791-03-1 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,0,3,7,9 and 1 respectively; the second part has 2 digits, 0 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 203791-03:
(8*2)+(7*0)+(6*3)+(5*7)+(4*9)+(3*1)+(2*0)+(1*3)=111
111 % 10 = 1
So 203791-03-1 is a valid CAS Registry Number.
203791-03-1Relevant articles and documents
Derivatives of 3-Hydroxy-2-nitrobenzoic Acid in Azo Coupling with p-Nitrobenzenediazonium
Kulikov,Glibin
, p. 444 - 447 (2007/10/03)
On reaction of 3-hydroxy-2-nitrobenzoic acid and its derivatives with p-nitrobenzenediazonium form the corresponding substituted 3-hydroxy-2-nitro-6-(4-nitrophenylazo)benzoic acids.
