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ChemicalBook >> CAS DataBase List >>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

CAS No.
24683-26-9
Chemical Name:
Ethyl 4-hydroxy-2-methyl-2H-1,2-benzothiazine-3-carboxylate 1,1-dioxide
Synonyms
2-METHYL-4-HYDROXY-2H-1,2-BENZOTHIAZINE-1,1-DIOXIDE-3-CARBOXYLIC ACID ETHYL ESTER;EcMetAP1-IN-1;Piroxicam Impurity K;2-Methyl-4-hydroxy-2H-1;Meloxicam USP Related Compound A;Ethyl 4-Hydroxy-2-methyl-2H-1,2-ben;MeloxicaM IMpurity A(EP) (USP RC A);Meloxicam usp RC A/Meloxicam EP IMP A;2-benzothiazine-3-carboxylic acid ethyl ester-1;Piroxicam EP Impurity K(Meloxicam EP Impurity A)
CBNumber:
CB2411196
Molecular Formula:
C12H13NO5S
Molecular Weight:
283.3
MDL Number:
MFCD00190168
MOL File:
24683-26-9.mol
MSDS File:
SDS
Last updated:2026-05-28 00:35:56
Product description Number Pack Size Price
Meloxicam impurity A European Pharmacopoeia (EP) Reference Standard Y0001035 15 mg $241
Meloxicam Related Compound A PharmaceuticalSecondaryStandard;CertifiedReferenceMaterial PHR2500 50MG $777
Ethyl 4-hydroxy-2-methyl-1,1-dioxo-2H-1,2-benzothiazine-3-carboxylate 97% 552429 25g $407
Meloxicam Related Compound A United States Pharmacopeia (USP) Reference Standard 1379412 25mg $1390
4-Hydroxy-2-methyl-2H-1,2-benzothiazine-3-carboxylic acid, ethyl ester 1,1-Dioxide 292216 5g $403
More product size

Ethyl 4-hydroxy-2-methyl-2H-1,2-benzothiazine-3-carboxylate 1,1-dioxide 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)
form solid
pka 4.50±1.00(Predicted)
InChI 1S/C12H13NO5S/c1-3-18-12(15)10-11(14)8-6-4-5-7-9(8)19(16,17)13(10)2/h4-7,14H,3H2,1-2H3
InChIKey QWTNANUGXZEPFQ-UHFFFAOYSA-N
SMILES CCOC(=O)C1=C(O)c2ccccc2S(=O)(=O)N1C
CAS DataBase Reference 24683-26-9(CAS DataBase Reference)
FDA UNII EAD64Z1YS1
UNSPSC Code 41116107
NACRES NA.24

SAFETY

Risk and Safety Statements

Symbol(GHS)  Skull and Crossbones (GHS06)
GHS06
Signal word  Danger
Hazard statements  H331
Precautionary statements  P304+P340+P311
PPE Eyeshields, Faceshields, Gloves, type P2 (EN 143) respirator cartridges
Hazard Codes  T
Risk Statements  23
Safety Statements  45
RIDADR  UN 2811 6.1/PG 2
WGK Germany  2
RTECS  DL0710425
HS Code  2934990002
Storage Class 6.1A - Combustible acute toxic Cat. 1 and 2
very toxic hazardous materials
Hazard Classifications Acute Tox. 3 Inhalation
REACH Registrations Active

Ethyl 4-hydroxy-2-methyl-2H-1,2-benzothiazine-3-carboxylate 1,1-dioxide price More Price(64)

Manufacturer Product number Product description CAS number Packaging Price Updated Buy
Sigma-Aldrich Y0001035 Meloxicam impurity A European Pharmacopoeia (EP) Reference Standard 24683-26-9 15 mg $241 2026-04-30 Buy
Sigma-Aldrich PHR2500 Meloxicam Related Compound A PharmaceuticalSecondaryStandard;CertifiedReferenceMaterial 24683-26-9 50MG $777 2026-04-30 Buy
Sigma-Aldrich 552429 Ethyl 4-hydroxy-2-methyl-1,1-dioxo-2H-1,2-benzothiazine-3-carboxylate 97% 24683-26-9 25g $407 2026-04-30 Buy
Sigma-Aldrich 1379412 Meloxicam Related Compound A United States Pharmacopeia (USP) Reference Standard 24683-26-9 25mg $1390 2026-04-30 Buy
Usbiological 292216 4-Hydroxy-2-methyl-2H-1,2-benzothiazine-3-carboxylic acid, ethyl ester 1,1-Dioxide 24683-26-9 5g $403 2026-06-03 Buy
Product number Packaging Price Buy
Y0001035 15 mg $241 Buy
PHR2500 50MG $777 Buy
552429 25g $407 Buy
1379412 25mg $1390 Buy
292216 5g $403 Buy

Ethyl 4-hydroxy-2-methyl-2H-1,2-benzothiazine-3-carboxylate 1,1-dioxide Chemical Properties,Uses,Production

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.

Ethyl 4-hydroxy-2-methyl-2H-1,2-benzothiazine-3-carboxylate 1,1-dioxide Preparation Products And Raw materials

Raw materials

Preparation Products

Global( 174)Suppliers
Supplier Tel Email Country ProdList Advantage
Capot Chemical Co.,Ltd. 		+86-（0）57185586718 +86-13336195806 sales@capot.com China 29640 60
Henan Tianfu Chemical Co.,Ltd. 		+86-0371-55170693 +86-19937530512 info@tianfuchem.com China 21585 55
CONIER CHEM AND PHARMA LIMITED 		sales@conier.com China 49979 58
career henan chemical co 		+86-0371-86658258 factory@coreychem.com China 29793 58
Shaanxi Dideu Medichem Co. Ltd 		+86-29-81139210 17389186172 1077@dideu.com China 4001 58
Neostar United (Changzhou) Industrial Co., Ltd. 		+86-0519-85551759 marketing1@neostarunited.com China 8828 58
SIMAGCHEM CORP 		+86-5922680277 +86-13806087780 sale@simagchem.com China 17346 58
Hefei TNJ Chemical Industry Co.,Ltd. 		+86-0551-65418671 +86-189 4982 3763 sales@tnjchem.com China 34563 58
AFINE CHEMICALS LIMITED 		+86-571-85134551 +86-18958018566 info@afinechem.com China 15079 58
Finetech Industry Limited 		+86-27-8746-5837 +86-18627785180 info@finetechnology-ind.com China 9539 58

View Lastest Price from Ethyl 4-hydroxy-2-methyl-2H-1,2-benzothiazine-3-carboxylate 1,1-dioxide manufacturers

Image Update time Product Price Min. Order Purity Supply Ability Manufacturer
Piroxicam Impurity K pictures 2026-08-06 Piroxicam Impurity K
24683-26-9
 1KG 98%min 500KGS WUHAN FORTUNA CHEMICAL CO., LTD
Ethyl 4-hydroxy-2-methyl-2H-1,2-benzothiazine-3-carboxylate 1,1-dioxide pictures 2020-02-17 Ethyl 4-hydroxy-2-methyl-2H-1,2-benzothiazine-3-carboxylate 1,1-dioxide
24683-26-9
 $1.00 1KG 98% HPLC 10 tons Career Henan Chemical Co

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

(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 2-METHYL-4-HYDROXY-2H-1,2-BENZOTHIAZE-3-CAPROXYLIC ACID-1,1-DIOXIDE ETHYL ESTER 2-METHYL-4-HYDROXY-2H-1,2-BENZOTHIAZINE-3-CARBOXYLIC ETHYL ESTER-1,1-DIOXIDE 2h-1,2-benzothiazine-3-carboxylicacid,4-hydroxy-2-methyl-,ethylester,1,1-d 4-hydroxy-2-methyl-2H-1,2-benzothiazine-3-carboxylic acid ethylester-1,1-dioxide (intermediate of piroxicam) 4-Hydroxy-2-methyl-2H-1,2-benzothiazine-3-carboxylic acid ethyl ester 1,1-d Ethyl 4-hydroxy-2-methyl-2H-1,2-benzothiazine-3-carboxylate 1,1-dioxide 4-HYDROXY-2-METHYL-2H-1,2-BENZOTHIAZINE-3-CARBOXYLIC ACID, 1,1-DIOXIDE, ETHYL ESTERPIROXICAM 2H-1,2-BENZOTHIAZINE-3-CARBOXYLIC ACID, 3,4-DIHYDRO-4-HYDROXY-2-METHYL-, ETHYL ESTER, 1,1-DIOXIDE 4-HYDROXY-2-METHYL-2H-1,2-BENZOTHIAZINE-3-CARBOXYLIC ACID ETHYL ESTER-1,1-DIOXIDE Imp. A (EP): Ethyl4-Hydroxy-2-methyl-2H-1,2-benzothiazine-3-carboxylate 1,1-Dioxide Ethyl4-hydroxy-2-methyl-2H-1,2-benzothiazine-3-carboxylta 1,1-dioxide Ethyl 4-Hydroxy-2-methyl-1,1-dioxo-2H-1,2-benzothiazine- Meloxicam USP Related Compound A Ethyl 4-Hydroxy-2-methyl-2H-1,2-ben 2H-1,2-Benzothiazine-3-carboxylic acid, 4-hydroxy-2-methyl-, ethylester, 1,1-dioxide ETHYL 4-HYDROXY-2-METHYL-2H-1,2-BENZOTHIAZINE-3-CARBOXYLATE 1,1-DIOXIDE (MELOXICAM INTERMEDIATE) / CAS:24683-26-9 Piroxicam Impurity K Ethyl 4-hydroxy-2-methyl-1,1-dioxo-2H-1,2-benzothiazine-3-ca... Meloxicam Related Compound A (ethyl-4-hydroxy-2-methyl-2H-1,2-benzothiazine-3-carboxylate- 1,1-diox (1379412) 2-METHYL-4-HYDROXY-2H-1,2-BENZOTHIAZINE-1,1-DIOXIDE-3-CARBOXYLIC ACID ETHYL ESTER 4-Hydroxy, 2-Methyl, 2h,1,2-Benzothiazine Carboxylic Acid Ethyl Ester-1,1-dioxide Piroxicam EP Impurity K(Meloxicam EP Impurity A) Meloxicam usp RC A/Meloxicam EP IMP A Meloxicam EP Impurity A (Piroxicam EP Impurity K, Meloxicam USP Related Compound A) Meloxicam EP Impurity-A / Meloxicam Related Compound-A Piroxicam EP Impurity K Ethyl 4-hydroxy-2-methyl-2H-1,2-benzothiazine-3-carboxylate 1,1-dioxide Meloxicam EP Impurity A Meloxicam USP Related Compound A Ethyl 4-hydroxy-2-methyl-1,1-dioxo-2H-1,2-benzothiazine-3-carboxylate EcMetAP1-IN-1 MELOXICAM USP RELATED COMPOUND A/MELOXICAM EP IMPURITY A Ethyl 4-hydroxy-2-methyl-2H-benzo[e][1,2]thiazine-3-carboxylate 1 24683-26-9 C14H13ClFNO3 Heterocyclic Building Blocks Thiazines Building Blocks Intermediates & Fine Chemicals Pharmaceuticals Sulfur & Selenium Compounds Aromatics Compounds Aromatics Heterocycles Building Blocks Heterocyclic Building Blocks Thiazines Organic acids API intermediates (intermediate of piroxicam)
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