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CAS No 99-11-6 , 2-hydroxy-6-oxo-1H-pyridine-4-carboxylic acid

  • Name: 2-hydroxy-6-oxo-1H-pyridine-4-carboxylic acid
  • Synonyms: 99-11-6; 2,6-Dihydroxypyridine-4-carboxylic acid;2-hydroxy-6-oxo-1H-pyridine-4-carboxylic acid; 2,6-Dihydroxyisonicotinate;2,6-Dihydroxyisonicotinic acid;
  • CAS Registry Number:
  • Melting Point: >300 ºC
  • Density: 1.708 g/cm3
  • Safety Statements: R36/37/38
  • Hazard Symbols: Xi: Irritant;
  • HS Code: 29333999
  • EINECS: 202-731-2
  • Molecular Weight: 155.1082
  • InchiKey: CSGQJHQYWJLPKY-UHFFFAOYSA-N
  • InChI: InChI=1S/C6H5NO4/c8-4-1-3(6(10)11)2-5(9)7-4/h1-2H,(H,10,11)(H2,7,8,9)
  • Risk Statements: S22;S26;S36/37/39
  • Molecular Formula: C6H5NO4
  • Molecular Structure:CAS No:99-11-6 2-hydroxy-6-oxo-1H-pyridine-4-carboxylic acid

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References of 2-hydroxy-6-oxo-1H-pyridine-4-carboxylic acid
Title: Citrazinic Acid
CAS Registry Number: 99-11-6
CAS Name: 1,2-Dihydro-6-hydroxy-2-oxo-4-pyridinecarboxylic acid
Synonyms: 2,6-dihydroxyisonicotinic acid; 2,6-dihydroxy-4-pyridinecarboxylic acid
Molecular Formula: C6H5NO4
Molecular Weight: 155.11
Percent Composition: C 46.46%, H 3.25%, N 9.03%, O 41.26%
Literature References: Prepn from citric acid with aq NH3 at 140-160° under pressure: Bavley, Hamilton, US 2729647 (1956 to Pfizer). Purification: Bavley et al., US 2738352 (1956 to Pfizer).
Properties: Yellowish powder with a greenish tinge; carbonizes above 300° without melting. Ultrapure material which is white or colorless, has been prepared. Almost insol in water; slightly sol in hot HCl; sol in alkali hydroxide or carbonate solns. Alkaline solns turn blue on standing.