121247-17-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 121247-17-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,2,1,2,4 and 7 respectively; the second part has 2 digits, 1 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 121247-17:
(8*1)+(7*2)+(6*1)+(5*2)+(4*4)+(3*7)+(2*1)+(1*7)=84
84 % 10 = 4
So 121247-17-4 is a valid CAS Registry Number.
121247-17-4Relevant articles and documents
Synthesis of 8,9-difluoro-2-methyl-6-oxo-1,2-dihydropyrrolo[3,2,1-ij]quinoline-5-c arboxylic acid
Parikh,Fray,Kleinman
, p. 1567 - 1569 (1988)
A new and efficient seven-step synthesis of 8,9-difluoro-2-methyl-6-oxo-1,2-dihydropyrrolo[3,2,1-ij]-quinoline-5- carboxylic acid (9), an important intermediate used in the synthesis of quinolone antibacterials, has been developed beginning with commercia
