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1-oxa-2-oxo-3-thiaindolizinium chloride

Also known as: 1-oxa-2-oxo-3-thiaindolizinium chloride [for source of alkyl radical], 2-oxo[1,4,2]oxathiazolo[2,3-a]pyridinium chloride, 3-oxa-2-oxo-1-thiaindolizinium chloride, Barton's reagent, [1,4,2]oxathiazolo[2,3-a]pyridin-4-ium-2-one chloride, MFCD00134271

1-oxa-2-oxo-3-thiaindolizinium chloride (CAS 89025-51-4) is a compound in the Aromatic Hydrocarbons category listed in the Jingsj chemical database. It has the molecular formula C6H4ClNO2S and a molecular weight of 189.61900 g/mol. Key property: a melting point of 170ºC (dec.)(lit.). 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.
89025-51-4
Jingsj CID
J-4649-1
Molecular Formula
C6H4ClNO2S
Molecular Weight
189.61900 g/mol
Category
Aromatic Hydrocarbons
Last updated
8/21/2026
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Physicochemical Properties

Melting Point170ºC (dec.)(lit.)
Exact Mass188.96500
PSA62.55000

GHS Safety & Compliance

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

Customs & Trade Information

HS Code2934100090
Summary2934100090 other compounds containing an unfused thiazole ring (whether or not hydrogenated) in the structure VAT:17.0% Tax rebate rate:9.0% Supervision conditions:none MFN tariff:6.5% General tariff:20.0%

Frequently Asked Questions

What is the CAS number of 1-oxa-2-oxo-3-thiaindolizinium chloride?

The CAS number of 1-oxa-2-oxo-3-thiaindolizinium chloride is 89025-51-4.

What are the molecular formula and molecular weight of 1-oxa-2-oxo-3-thiaindolizinium chloride?

1-oxa-2-oxo-3-thiaindolizinium chloride has molecular formula C6H4ClNO2S and molecular weight 189.61900 g/mol.

Is 1-oxa-2-oxo-3-thiaindolizinium chloride hazardous?

1-oxa-2-oxo-3-thiaindolizinium chloride has GHS signal word Warning and hazard statements H315 — Causes skin irritation; H319 — Causes serious eye irritation; H335 — May cause respiratory irritation.

What are the upstream and downstream products of 1-oxa-2-oxo-3-thiaindolizinium chloride?

For 1-oxa-2-oxo-3-thiaindolizinium chloride, Upstream Products: 2-Pyridinethiol 1-oxide, Pyrithione, Pyrithione sodium.

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

Last updated:

How to cite: Jingsj. "1-oxa-2-oxo-3-thiaindolizinium chloride (CAS 89025-51-4)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-4649-1 (accessed 2026-11-09).

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