159597-47-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 159597-47-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,5,9,5,9 and 7 respectively; the second part has 2 digits, 4 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 159597-47:
(8*1)+(7*5)+(6*9)+(5*5)+(4*9)+(3*7)+(2*4)+(1*7)=194
194 % 10 = 4
So 159597-47-4 is a valid CAS Registry Number.
159597-47-4Relevant articles and documents
A synthesis of 9-methoxy-1-methyl-1H,6H-pyrazolo[4,3-c]carbazole
Morel, Sandrine,Boyer, Gerard,Coullet, Fabien,Galy, Jean-Pierre
, p. 2443 - 2447 (1996)
The synthesis of 9-Methoxy-1-methyl-1H,6H-pyrazolo[4,3-c]carbazole is reported in four steps from 6-nitroindazole. Palladium acetate mediated cyclization gave only the 'bent' tetracyclic derivative.
