189442-58-8 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 189442-58-8 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,8,9,4,4 and 2 respectively; the second part has 2 digits, 5 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 189442-58:
(8*1)+(7*8)+(6*9)+(5*4)+(4*4)+(3*2)+(2*5)+(1*8)=178
178 % 10 = 8
So 189442-58-8 is a valid CAS Registry Number.
189442-58-8Relevant academic research and scientific papers
An efficient synthesis of tetrasubstituted imidazoles from N-(2-Oxo)- amides
Claiborne, Christopher F.,Liverton, Nigel J.,Nguyen, Kevin T.
, p. 8939 - 8942 (2007/10/03)
N-(2-Oxo)-amides were efficiently converted to tri- and tetra- substituted imidazoles under neutral reaction conditions upon treatment with neat ammonium trifluoroacetate.
