CAS:126357-59-3|7-Chloro-6-fluoro-1,4-dihydro-4-oxo-3-quinolinecarboxylic Acid Ethyl Ester Potassium Salt

Catalogue Number:C315523
Chemical Name:7-Chloro-6-fluoro-1,4-dihydro-4-oxo-3-quinolinecarboxylic Acid Ethyl Ester Potassium Salt
Synonyms:7-Chloro-6-fluoro-1,4-dihydro-4-oxo-3-quinolinecarboxylic Acid Ethyl Ester Potassium Salt (1:1)
CAS Number:126357-59-3
Alternate CAS #
75073-15-3
Molecular Formula:C₁₂H₈ClFKNO₃
Molecular Weight:307.75
Storage:20°C
Solubility:Dimethylformamide (Heated), DMSO
Category:Standards; Pharmaceutical/API Drug Impurities/Metabolites;
Applications:7-Chloro-6-fluoro-1,4-dihydro-4-oxo-3-quinolinecarboxylic Acid Ethyl Ester Potassium Salt is the unlabelled form of 7-​Chloro-​1-​ethyl-​6-​fluoro-​1,​4-​dihydro-​4-​oxo-3-​quinolinecarboxylic Acid Ethyl Ester (C315510), which is an impurity of Norfloxacin (N681000), an antibacterial agent and a contaminant of emerging concern (CECs). 7-​Chloro-​1-​ethyl-​6-​fluoro-​1,​4-​dihydro-​4-​oxo-3-​quinolinecarboxylic Acid Ethyl-d5 Ester is also an intermediate in the synthesis of Norfloxacin-d5 (N681003).
References:Koga, H., et al.: J. Med. Chem., 23, 1358 (1980); Hirai, K., et al.: Antimicrob. Agents Chemother., 19, 188 (1981); Holmes, B., et al.: Drugs, 30, 482 (1985)
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