851973-17-6 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 851973-17-6 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 8,5,1,9,7 and 3 respectively; the second part has 2 digits, 1 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 851973-17:
(8*8)+(7*5)+(6*1)+(5*9)+(4*7)+(3*3)+(2*1)+(1*7)=196
196 % 10 = 6
So 851973-17-6 is a valid CAS Registry Number.
851973-17-6Relevant articles and documents
Novel process for preparing 3-fluoroquinolines
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Page/Page column 6, (2008/06/13)
The invention relates to a novel preparation of 3-fluoroquinolines of formula (I) in which R1, R2, R3 and R4 represent: a) a fluorine; b) an alkyl optionally substituted with one to three fluorines, with OR