139005-04-2 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 139005-04-2 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,9,0,0 and 5 respectively; the second part has 2 digits, 0 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 139005-04:
(8*1)+(7*3)+(6*9)+(5*0)+(4*0)+(3*5)+(2*0)+(1*4)=102
102 % 10 = 2
So 139005-04-2 is a valid CAS Registry Number.
139005-04-2Relevant articles and documents
A new preparation of N-alkyl-2(1H)-pyridones from 2-glycudoxypyridines
Schmidhauser,Longley
, p. 7155 - 7158 (1991)
N-Alkyl-2(1H)-pyridones are prepared in high yield by the reaction of 2-glycidoxypyridines with carboxylic acids, phenols or thiophenols. These reactions proceed through an oxazolinium ion intermediate, which reacts with the acid counter ion to give the u
