159890-49-0 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 159890-49-0 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,5,9,8,9 and 0 respectively; the second part has 2 digits, 4 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 159890-49:
(8*1)+(7*5)+(6*9)+(5*8)+(4*9)+(3*0)+(2*4)+(1*9)=190
190 % 10 = 0
So 159890-49-0 is a valid CAS Registry Number.
159890-49-0Relevant articles and documents
Process for preparing a substituted imidazopyridine compound
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, (2008/06/13)
The present invention provides a new process for large-scale preparation of substituted imidazopyridine compound of formula (1) wherein R1 is C1-C6 alkoxy or NH2 group, comprising the step of reacting a compound of formula (2) with a 3-halo-2-butanone compound in cyclohexanone.