172216-26-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 172216-26-1 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,7,2,2,1 and 6 respectively; the second part has 2 digits, 2 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 172216-26:
(8*1)+(7*7)+(6*2)+(5*2)+(4*1)+(3*6)+(2*2)+(1*6)=111
111 % 10 = 1
So 172216-26-1 is a valid CAS Registry Number.
172216-26-1Relevant articles and documents
A convenient method for the preparation of N-aryl and N-alkyl-O-methyl hydroxylamines
Santos,Lobo,Prabhakar
, p. 3509 - 3518 (1995)
Trifluoroaceto or p-nitrobenzo-N-substituted hydroxamic acids are smoothly methylated with diazomethane and the products cleanly cleaved by hydrazine to provide the title compounds.
