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3,5-Dichloropyridine 1-oxide

Also known as: 3,5-Dichloropyridine 1-oxide, 3,5-Dichloropyridine N-oxide, 3,5-Dichloropyridine N-oxide 98%, 3,5-dichloro-1-oxidopyridin-1-ium, 3,5-dichloropyridine N-oxide, MFCD00955620, TAK438 Impurity 96, Vonoprazan Impurity 101, Vonoprazan Impurity 96

3,5-Dichloropyridine 1-oxide (CAS 15177-57-8) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C5H3Cl2NO and a molecular weight of 163.98900 g/mol. Key properties include a melting point of 110-113ºC(lit.), a boiling point of 344.2ºC at 760mmHg, a density of 1.47g/cm3 and a flash point of 162ºC. 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.
15177-57-8
Jingsj CID
J-13580-8
Molecular Formula
C5H3Cl2NO
Molecular Weight
163.98900 g/mol
Category
Pharma Intermediates
Last updated
8/21/2026
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Physicochemical Properties

Melting Point110-113ºC(lit.)
Boiling Point344.2ºC at 760mmHg
Density1.47g/cm3
Flash Point162ºC
Exact Mass162.95900
PSA25.46000
LogP2.42190

GHS Safety & Compliance

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

Frequently Asked Questions

What is the CAS number of 3,5-Dichloropyridine 1-oxide?

The CAS number of 3,5-Dichloropyridine 1-oxide is 15177-57-8.

What are the molecular formula and molecular weight of 3,5-Dichloropyridine 1-oxide?

3,5-Dichloropyridine 1-oxide has molecular formula C5H3Cl2NO and molecular weight 163.98900 g/mol.

Is 3,5-Dichloropyridine 1-oxide hazardous?

3,5-Dichloropyridine 1-oxide 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 3,5-Dichloropyridine 1-oxide?

For 3,5-Dichloropyridine 1-oxide, Upstream Products: 3,5-Dichloropyridine; Downstream Products: 6-Chlorooxazolo[4,5-b]pyridin-2(3H)-one, 3,5-Dichloro-4-nitropyridine N-oxide, 3,5-Dichloro-2-cyanopyridine.

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

Last updated:

How to cite: Jingsj. "3,5-Dichloropyridine 1-oxide (CAS 15177-57-8)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-13580-8 (accessed 2026-11-09).

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