| abstract |
The subject invention provides a pharmaceutical composition comprising N-ethyl-N-phenyl-1,2, -dihydro-4-hydroxy-5-chloro-1-methyl-2-oxoquinoline-3-carboxamide or a salt thereof, a a pharmaceutically acceptable carrier and not more than 0.5% by weight / weight (w / w) relative to N-ethyl-N-phenyl-l, 2, -dihydro-4-hydroxy-5-chloro-l-methyl- 2-Chloro-6- (l-ethyl-N-methyl-2-oxoindoline-3-carboxa-mido) 2-oxoquinoline-3-carboxamide benzoic acid, lH, 3H-spiro [5-chloro-l-methy] quino-line-2,4-dione-3,3 '- [l] ethylindolin- [2] -one], or 5-Chloro-N-efhyl-3-hydroxy-1-methyl-2,4-dioxo- N-phenyl-1,2,3,4-tetrahydro-quinoline-3-carboxamide. |