144951-25-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 144951-25-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,4,4,9,5 and 1 respectively; the second part has 2 digits, 2 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 144951-25:
(8*1)+(7*4)+(6*4)+(5*9)+(4*5)+(3*1)+(2*2)+(1*5)=137
137 % 10 = 7
So 144951-25-7 is a valid CAS Registry Number.
144951-25-7Relevant articles and documents
THE SYNTHESIS OF PYRROLOPYRAZIN-1(2H)-ONES AND PYRROLOPYRIDAZIN-6(5H)-ONES
McHattie, Derek,Buchan, Robert,Fraser, Martin,Lin, Paul V. S. Kong Thoo
, p. 1759 - 1771 (2007/10/02)
The pyrrolopyrazin-1(2H)-ones (10), (11), (12) and (13) and the pyrrolopyridazin-6(5H)-one (18) were prepared either a) directly by Chichibabin quaternisation-cyclisation of the corresponding methoxymethylpyrazine or pyridazine or b) by hydr
