53973-62-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 53973-62-9 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 5,3,9,7 and 3 respectively; the second part has 2 digits, 6 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 53973-62:
(7*5)+(6*3)+(5*9)+(4*7)+(3*3)+(2*6)+(1*2)=149
149 % 10 = 9
So 53973-62-9 is a valid CAS Registry Number.
53973-62-9Relevant articles and documents
NOVEL SYNTHESIS OF QUINOLONE-3-SULFONIC ACID DERIVATIVES
Kim, Choung Un,Luh, Bing-Yu
, p. 1119 - 1122 (2007/10/02)
The synthesis of 1-ethyl-6-fluoro-7-(1-piperazinyl)-1,4-dihydro-4-oxoquinoline-3-sulfonic acid is described.The use of a 2-bromophenyl sulfonate as a protected sulfonic acid is readily hydrolyzed under basic conditions is described.