| Title:  Isonixin CAS Registry Number:  57021-61-1 CAS Name:  N-(2,6-Dimethylphenyl)-1,2-dihydro-2-oxo-3-pyridinecarboxamide Additional Names:  2-pyridone-3-carboxylic acid 2,6-xylidide;  2-hydroxy-2¢,6¢-nicotinoxylidide Trademarks:  Nixyn (Organon) Molecular Formula:  C14H14N2O2 Molecular Weight:  242.27 Percent Composition:  C 69.41%, H 5.82%, N 11.56%, O 13.21% Literature References:  Non-steroidal anti-inflammatory agent.  Prepn:  J.-A. Canicio Chimeno, BE 820578; idem, US 4031105 (1975, 1977 both to Hermes).  Prepn, pharmacology and toxicity:  R. Cadena et al., Arzneim.-Forsch. 27, 1457 (1977).  Toxicological study:  M. T. Mitjavila et al., ibid. 1460.  Absorption, excretion studies:  G. Carrera et al., ibid. 29, 1401 (1979).  Tolerance in humans:  T. M. Serra et al., Therapie 35, 173 (1980).  HPLC determn in plasma:  F. González Lopez et al., Farmaco Ed. Prat. 38, 273 (1983). Properties:  White crystalline powder from ethanol, mp 266-267°.  Sol in chloroform and strong alkali.  Practically insol in acids and water.  LD50 in male, female mice, male, female rats (mg/kg):  7000, 8000, >6000, >6000 orally; all >2000 i.p. (Cadena). Melting point:  mp 266-267° Toxicity data:  LD50 in male, female mice, male, female rats (mg/kg):  7000, 8000, >6000, >6000 orally; all >2000 i.p. (Cadena) Therap-Cat:  Analgesic, anti-inflammatory. Keywords:  Analgesic (Non-Narcotic); Anti-inflammatory (Nonsteroidal); Aminoarylcarboxylic Acid Derivatives.  |