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ChemicalBook >  Product Catalog >  Analytical Chemistry >  Standard >  Pharmaceutical Impurity Reference Standards >  Ethyl 4-hydroxy-2-methyl-2H-1,2-benzothiazine-3-carboxylate 1,1-dioxide

Ethyl 4-hydroxy-2-methyl-2H-1,2-benzothiazine-3-carboxylate 1,1-dioxide

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Ethyl 4-hydroxy-2-methyl-2H-1,2-benzothiazine-3-carboxylate 1,1-dioxide Basic information

Product Name:
Ethyl 4-hydroxy-2-methyl-2H-1,2-benzothiazine-3-carboxylate 1,1-dioxide
Synonyms:
  • (4-Hydroxy-2-methyl-2H-1,2-benzothiazine-3-carboxylic acid ethyl)1,1-dioxide
  • Ethyl 4-Hydroxy-2-methyl-2H-1,2-benzothiazine-3-carboxylate 1,1-Dioxide (Piroxicam Impurity K)
  • 2-benzothiazine-3-carboxylic acid ethyl ester-1
  • 2-Methyl-4-hydroxy-2H-1
  • Meloxicam Related Compound A (25 mg) (ethyl-4-hydroxy-2-methyl-2H-1,2-benzothiazine-3-carboxylate- 1,1-dioxide)
  • MeloxicaM IMpurity A(EP) (USP RC A)
  • Ethyl 4-hydroxy-2-methyl-1,1-dioxo-2H-1,2-benzothiazine-3-carboxylate 97%
  • ETHYL 4-HYDROXY-2-METHYL-1,1-DIOXO-2H-1,2-BENZOTHIAZINE-3-CARBOXYLATE
CAS:
24683-26-9
MF:
C12H13NO5S
MW:
283.3
EINECS:
246-403-7
Product Categories:
  • Intermediates & Fine Chemicals
  • Pharmaceuticals
  • Aromatics Compounds
  • Aromatics
  • Heterocycles
  • Sulfur & Selenium Compounds
  • Organic acids
  • API intermediates
  • (intermediate of piroxicam)
  • Building Blocks
  • Heterocyclic Building Blocks
  • Thiazines
Mol File:
24683-26-9.mol
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Ethyl 4-hydroxy-2-methyl-2H-1,2-benzothiazine-3-carboxylate 1,1-dioxide Chemical Properties

Melting point:
140-144 °C (lit.)
Boiling point:
448.1±55.0 °C(Predicted)
Density 
1.458±0.06 g/cm3(Predicted)
storage temp. 
2-8°C
solubility 
Dichloromethane (Slightly), DMSO (Slightly), Methanol (Slightly)
pka
4.50±1.00(Predicted)
CAS DataBase Reference
24683-26-9(CAS DataBase Reference)
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Safety Information

Hazard Codes 
T
Risk Statements 
23
Safety Statements 
45
RIDADR 
UN 2811 6.1/PG 2
WGK Germany 
2
RTECS 
DL0710425
HS Code 
2934990002

MSDS

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Ethyl 4-hydroxy-2-methyl-2H-1,2-benzothiazine-3-carboxylate 1,1-dioxide Usage And Synthesis

Chemical Properties

White to Off-White Solid

Uses

Piroxicam impurity K. Also an impurity found in meloxicam (M216100).

Hazard

Low toxicity by ingestion and inhalation.

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