Active Pharmaceutical Ingredients

Catalog ID80020302

CAS NO.35511-15-0

Purity 95+%

MDL NumberMFCD00071766

Molecular Formula C11H11NO5S

Molecular Weight 269.2737

Melting point: 169 – 172°C

Category	Information
Chemical Properties	– Molecular Formula: C₁₁H₁₁NO₅S<br>- Molecular Weight: 269.27 g/mol
Physical Properties	– Appearance: White crystalline solid<br>- Melting Point: 163-165°C
Synonyms	– Methyl 4-hydroxy-2-methyl-1,1-dioxo-2H-1,2-benzothiazine-3-carboxylate<br>- Piroxicam Impurity J
Applications	– Impurity in the synthesis of piroxicam (an anti-inflammatory drug) and meloxicam (a nonsteroidal anti-inflammatory drug).
Safety Information	– Store at 2-8°C under nitrogen.<br>- Potential toxicity; handle with appropriate personal protective equipment (PPE) and in a well-ventilated area.
CAS Number	35511-15-0

Names and Identifiers

Name	Methyl 4-hydroxy-2-methyl-1,1-dioxo-2H-1,2-benzothiazine-3-carboxylate
Synonyms	Methyl4-hydroxy-2-methyl-1,1-dioxo-2H-1,2-benzothiazine-3-carboxylate Methyl4-hydroxy-2-methyl-2H-1,2-benzothiazine3-carboxylate1,1-dioxide Methyl 4-hydroxy-2-methyl-1,1-dioxo-2H-1,2-benzothiazine-3-carboxylate methyl 4-hydroxy-2-methyl-2H-1,2-benzothiazine-3-carboxylate 1,1-dioxide 4-Hydroxy-2-methyl-2H-1,2-benzothiazine-3-carboxylic acid methyl ester 1,1- 2-Methyl-4-Hydroxy-2H-1,2-Benzotiazine-3-CarboxylicAicdEthylEster-1,1-Dioxide 2-METHYL-4-HYDROXY-2H-1,2-BENZOTHIAZINE-3-CARBOXYLIC METHYL ESTER-1,1-DIOXIDE 2-Methyl-4-hydroxy-2H-1,2-benzisothiazine-3-carboxylic acid ethyl ester-1,1-diox 2-Methyl-4-Hydroxy-2H-1,2-Benzothiazine-3-Carboxylic Isopropyl Ester-1,1-Dioxide 2-METHYL-4-HYDROXY-2H-1,2-BENZOTHIAZINE-3-CARBOXYLIC ACID METHYL ESTER 1,1-DIOXIDE
CAS	35511-15-0
EINECS	252-601-4
InChI	InChI=1/C11H11NO5S/c1-12-9(11(14)17-2)10(13)7-5-3-4-6-8(7)18(12,15)16/h3-6,13H,1-2H3

35511-15-0 – Physico-chemical Properties

Molecular Formula	C11H11NO5S
Molar Mass	269.27
Density	1.514±0.06 g/cm3(Predicted)
Melting Point	163-165°C
Boling Point	439.9±55.0 °C(Predicted)
Flash Point	219.834°C
Solubility	Chloroform (Slightly), Methanol (Slightly)
Vapor Presure	0mmHg at 25°C
Appearance	Solid
Color	White to Pale Yellow
pKa	4.50±1.00(Predicted)
Storage Condition	Sealed in dry,2-8°C
Refractive Index	1.632
Physical and Chemical Properties
Use	It is an intermediate for the synthesis of analgesic drugs such as yantongxikang

35511-15-0 – Reference Information

use	is an intermediate for synthesizing analgesic drugs such as yantongxikang

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