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2-Methyl-1,8-naphthyridine

Also known as: 2-Methyl-[1,8]-naphthyridine, 2-Methyl-1,8-diazanaphthalene, 2-Methylpyrido[2,3-b]pyridine, 1,8-Naphthyridine, 2-methyl-

2-Methyl-1,8-naphthyridine (CAS 1569-16-0) is a compound in the Aromatic Hydrocarbons category listed in the Jingsj chemical database. It has the molecular formula C9H8N2 and a molecular weight of 144.173 g/mol. Key properties include a melting point of 96-97ºC, a boiling point of 252.8±20.0 °C at 760 mmHg, a density of 1.1±0.1 g/cm3 and a flash point of 106.3±13.1 °C. It is classified under GHS with signal word Danger and hazard statements H302 — Harmful if swallowed and H318 — Causes serious eye damage. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
1569-16-0
Jingsj CID
J-959558-8
Molecular Formula
C9H8N2
Molecular Weight
144.173 g/mol
Category
Aromatic Hydrocarbons
Last updated
8/21/2026

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Physicochemical Properties

Melting Point96-97ºC
Boiling Point252.8±20.0 °C at 760 mmHg
Density1.1±0.1 g/cm3
Flash Point106.3±13.1 °C
Exact Mass144.068741
PSA25.78000
LogP1.38
Vapor Pressure0.0±0.5 mmHg at 25°C
Refractive Index1.633

GHS Safety & Compliance

Corrosion / IrritantSignal word: Danger
  • H302 — Harmful if swallowed
  • H318 — Causes serious eye damage

Customs & Trade Information

HS Code2933990090
Summary2933990090. heterocyclic compounds with nitrogen hetero-atom(s) only. 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 2-Methyl-1,8-naphthyridine?

The CAS number of 2-Methyl-1,8-naphthyridine is 1569-16-0.

What are the molecular formula and molecular weight of 2-Methyl-1,8-naphthyridine?

2-Methyl-1,8-naphthyridine has molecular formula C9H8N2 and molecular weight 144.173 g/mol.

Is 2-Methyl-1,8-naphthyridine hazardous?

2-Methyl-1,8-naphthyridine has GHS signal word Danger and hazard statements H302 — Harmful if swallowed; H318 — Causes serious eye damage.

What are the upstream and downstream products of 2-Methyl-1,8-naphthyridine?

For 2-Methyl-1,8-naphthyridine, Upstream Products: 2-Amino-6-methylpyridine, Sodium 3-nitrobenzenesulfonate, trans-4-(Dimethylamino)-3-buten-2-one; Downstream Products: 1-[(tert-Butoxy)carbonyl]-3,4-dihydro-1,8-naphthyridine-7(2H)-acetic acid, 7-Methyl-1,2,3,4-tetrahydro-1,8-naphthyridine, 1,8-Naphthyridine-2-carbaldehyde.

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

Last updated:

How to cite: Jingsj. "2-Methyl-1,8-naphthyridine (CAS 1569-16-0)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-959558-8 (accessed 2026-11-09).

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