138849-54-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 138849-54-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,8,8,4 and 9 respectively; the second part has 2 digits, 5 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 138849-54:
(8*1)+(7*3)+(6*8)+(5*8)+(4*4)+(3*9)+(2*5)+(1*4)=174
174 % 10 = 4
So 138849-54-4 is a valid CAS Registry Number.
138849-54-4Relevant articles and documents
STABLE ISOMERIC BENZONITRILE OXIDES DERIVED FROM 6-CHLORO-2,4-DIMETHOXYANILINE
Stoyanovich, F.M.,Bulgakova, V.N.,Krayushkin, M.M.
, p. 2280 - 2285 (2007/10/02)
The Rieche formylation of N-acyl-6-chloro-2,4-dimethoxyanilines proceeds at C5, while metallation occurs at C3.As a result, isomeric aldehydes were obtained, which were converted into stable nitrile oxides.
