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Nalidixic acid

Also known as: 1-Ethyl-1,4-dihydro-7-methyl-4-oxo-1,8-naphthyridine-3-carboxylic acid, 1-Ethyl-7-methyl-4-oxo-1,4-dihydro-1,8-naphthyridine-3-carboxylic acid, 1,4-Dihydro-1-ethyl-7-methyl-4-oxo-1,8-naphthyridine-3-carboxylic acid, NegGram, WIN-18320, Wintomylon, Urisal, Nalidixic acid BP93.CH.P.95, Nalidixic acid, Antibiotic for Culture Media Use Only, NOGRAM, cybis, nalix, negram, poleon, uriben, uroman, uroneg, uropan

Nalidixic acid (CAS 389-08-2) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C12H12N2O3 and a molecular weight of 232.235 g/mol. Key properties include a melting point of 227-229 °C(lit.), a boiling point of 413.1±45.0 °C at 760 mmHg, a density of 1.3±0.1 g/cm3 and a flash point of 203.6±28.7 °C. It is classified under GHS with signal word Warning and hazard statements H302 — Harmful if swallowed. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
389-08-2
Jingsj CID
J-37022-9
Molecular Formula
C12H12N2O3
Molecular Weight
232.235 g/mol
Category
Organic Acids
Last updated
8/21/2026

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Physicochemical Properties

Melting Point227-229 °C(lit.)
Boiling Point413.1±45.0 °C at 760 mmHg
Density1.3±0.1 g/cm3
Flash Point203.6±28.7 °C
Exact Mass232.084793
PSA72.19000
LogP1.19
Vapor Pressure0.0±1.0 mmHg at 25°C
Refractive Index1.605
Additional Property0.1 G/L (23 ºC)

GHS Safety & Compliance

IrritantSignal word: Warning
  • H302 — Harmful if swallowed

Activity & Biological Data

Additional Information[1]. http://en.wikipedia.org/wiki/Nalidixic_acid

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 Nalidixic acid?

The CAS number of Nalidixic acid is 389-08-2.

What are the molecular formula and molecular weight of Nalidixic acid?

Nalidixic acid has molecular formula C12H12N2O3 and molecular weight 232.235 g/mol.

Is Nalidixic acid hazardous?

Nalidixic acid has GHS signal word Warning and hazard statements H302 — Harmful if swallowed.

What are the upstream and downstream products of Nalidixic acid?

For Nalidixic acid, Upstream Products: 2-Amino-6-methylpyridine, Diethyl 2-(((6-methylpyridin-2-yl)amino)methylene)malonate, ethyl 4-hydroxy-7-methyl-1,8-naphthyridine-3-carboxylate.

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

Last updated:

How to cite: Jingsj. "Nalidixic acid (CAS 389-08-2)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-37022-9 (accessed 2026-11-09).

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