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

Also known as: Piroxicam Impurity L, Meloxicam Impurity F, Meloxicam Related Compound C (USP), Isopropyl 4-hydroxy-2-methyl-2H-1,2-benzothiazine-3-carboxylate 1,1-dioxide (Piroxicam Impurity L), 4-Hydroxy-2-methyl-2H-1,2-benzothiazine-3-carboxylic acid isopropyl ester 1,1-dioxide, propan-2-yl 4-hydroxy-2-methyl-1,1-dioxo-1λ6,2-benzothiazine-3-carboxylate

Isopropyl 4-hydroxy-2-methyl-2H-1,2-benzothiazine-3-carboxylate 1,1-dioxide (CAS 118854-48-1) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C13H15NO5S and a molecular weight of 297.32700 g/mol. Key properties include a boiling point of 450.485ºC at 760 mmHg and a density of 1.408. It is classified under GHS with signal word Warning and hazard statements H315 — Causes skin irritation, H319 — Causes serious eye irritation and H335 — May cause respiratory irritation. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
118854-48-1
Jingsj CID
J-1896176-7
Molecular Formula
C13H15NO5S
Molecular Weight
297.32700 g/mol
Category
Organic Acids
Last updated
8/21/2026
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Physicochemical Properties

Boiling Point450.485ºC at 760 mmHg
Density1.408
Exact Mass297.06700
PSA92.29000
LogP2.51760

GHS Safety & Compliance

IrritantSignal word: Warning
  • H315 — Causes skin irritation
  • H319 — Causes serious eye irritation
  • H335 — May cause respiratory irritation

Customs & Trade Information

HS Code2934999090
Summary2934999090. other heterocyclic compounds. VAT:17.0%. Tax rebate rate:13.0%. . MFN tariff:6.5%. General tariff:20.0%

Frequently Asked Questions

What is the CAS number of Isopropyl 4-hydroxy-2-methyl-2H-1,2-benzothiazine-3-carboxylate 1,1-dioxide?

The CAS number of Isopropyl 4-hydroxy-2-methyl-2H-1,2-benzothiazine-3-carboxylate 1,1-dioxide is 118854-48-1.

What are the molecular formula and molecular weight of Isopropyl 4-hydroxy-2-methyl-2H-1,2-benzothiazine-3-carboxylate 1,1-dioxide?

Isopropyl 4-hydroxy-2-methyl-2H-1,2-benzothiazine-3-carboxylate 1,1-dioxide has molecular formula C13H15NO5S and molecular weight 297.32700 g/mol.

Is Isopropyl 4-hydroxy-2-methyl-2H-1,2-benzothiazine-3-carboxylate 1,1-dioxide hazardous?

Isopropyl 4-hydroxy-2-methyl-2H-1,2-benzothiazine-3-carboxylate 1,1-dioxide has GHS signal word Warning and hazard statements H315 — Causes skin irritation; H319 — Causes serious eye irritation; H335 — May cause respiratory irritation.

Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.

Last updated:

How to cite: Jingsj. "Isopropyl 4-hydroxy-2-methyl-2H-1,2-benzothiazine-3-carboxylate 1,1-dioxide (CAS 118854-48-1)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1896176-7 (accessed 2026-11-09).

Data for reference only; verify product details with suppliers before purchase.