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HomeProduct name list1,8-Naphthyridine

1,8-Naphthyridine

1,8-Naphthyridine Structural

What is 1,8-Naphthyridine?

Description

1,8-Naphthyridine is an organic compound with the formula C8H6N2. It is the most well-studied of the six isomeric naphthyridines, a subset of diazanaphthalenes with nitrogen in the separate rings. Enoxacin, nalidixic acid, and trovafloxacin are 1,8-naphthyridine derivatives with antibacterial properties related to the fluoroquinolones.

The Uses of 1,8-Naphthyridine

1,8-naphthyridine (napy) and its simplest 2-methyl and 2,7-dimethyl derivatives may act as monodentate and bidentate ligands, resembling the behavior of the carboxylate ligands.

Definition

ChEBI: 1,8-naphthyridine is a naphthyridine in which the nitrogens are situated at positions 1 and 8.

Purification Methods

Purify 1,8-naphthyridine through an Al2O3 column and elute with toluene and pet ether, evaporate the eluate, crystallise the residue from pet ether (b 60-80o), and sublime it at 80o/13mm. The picrate [15936-16-0] has m 207-208o (from EtOH), and the methiodide has m 180-181o (from EtOH). [Hawes & Wibberley J Chem Soc (C) 1564 1967, UV: Armarego Physical Methods in Heterocyclic Chemistry (Ed Katritzky, Academic Press) Vol III 134 1971, Beilstein 23 II 178, 23 III/IV 1237.]

Properties of 1,8-Naphthyridine

Melting point: 99.8-99.9°C
Boiling point: 248.9±13.0 °C(Predicted)
Density  1.183±0.06 g/cm3(Predicted)
storage temp.  Sealed in dry,Room Temperature
form  powder to crystal
pka 3.55±0.10(Predicted)
pka 3.39
color  White to Light yellow to Light orange
CAS DataBase Reference 254-60-4(CAS DataBase Reference)

Safety information for 1,8-Naphthyridine

Signal word Warning
Pictogram(s)
ghs
Exclamation Mark
Irritant
GHS07
GHS Hazard Statements H302:Acute toxicity,oral
H315:Skin corrosion/irritation
H319:Serious eye damage/eye irritation
H335:Specific target organ toxicity, single exposure;Respiratory tract irritation
Precautionary Statement Codes P261:Avoid breathing dust/fume/gas/mist/vapours/spray.
P305+P351+P338:IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing.

Computed Descriptors for 1,8-Naphthyridine

InChIKey FLBAYUMRQUHISI-UHFFFAOYSA-N

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