4-hydroxy-2-methyl-1,1-dioxo-1λ6,2-benzothiazine-3-carboxamide

Names

[ CAS No. ]:
24683-25-8

[ Name ]:
4-hydroxy-2-methyl-1,1-dioxo-1λ6,2-benzothiazine-3-carboxamide

[Synonym ]:
UNII-94RNA5J21S
2H-1,2-Benzothiazine-3-carboxamide,4-hydroxy-2-methyl-,1,1-dioxide
4-hydroxy-2-methyl-2H-1,2-benzothiazine-3-carboxamide-1,1-dioxide
Piroxicam Impurity C
Despyridyl Piroxicam (Piroxicam Impurity C)

Chemical & Physical Properties

[ Density]:
1.603g/cm3

[ Boiling Point ]:
517.9ºC at 760 mmHg

[ Molecular Formula ]:
C10H10N2O4S

[ Molecular Weight ]:
254.26200

[ Flash Point ]:
267ºC

[ Exact Mass ]:
254.03600

[ PSA ]:
110.07000

[ LogP ]:
2.20100

[ Vapour Pressure ]:
1.5E-11mmHg at 25°C

[ Index of Refraction ]:
1.69

Synthetic Route

Click to get detail synthetic route

Precursor & DownStream

Precursor

  • 2-((TERT-BUTYLDIMETHYLSILYLOXY)METHYL)-6-((TRIMETHYLSILYL)ETHYNYL)FURO[3,2-B]PYRIDINE
  • Ethyl 4-Hydroxy-2H-1,2-benzothiazine-3-carboxylate 1,1-Dioxide
  • 1,1,4-trioxo-1,2,3,4-tetrahydro-1λ6-benzo[e][1,2]thiazine-3-carboxylic acid amide
  • methyl iodide

DownStream

  • Meloxicam