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Sulfaquinoxaline

Also known as: 2-Sulfanilamidoquinoxaline, 4-Amino-N-2-quinoxalinyl-benzenesulfonamide, 4-Amino-N-(quinoxalin-2-yl)benzenesulfonamide, 4-Amino-N-[(2E)-2(1H)-quinoxalinylidene]benzenesulfonamide, Benzenesulfonamide, 4-amino-N-2-quinoxalinyl-, N1-(2-Quinoxalinyl)sulfanilamide, N1-2-quinoxalylsulfanilamide, Sulfachinoxaline, Sulfabenzpyrazine, Sulphaquinoxaline, Sulfacox, Sulquin, Avicocid, Italquina, Compound 3-120, Kokozigal

Sulfaquinoxaline (CAS 59-40-5) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C14H12N4O2S and a molecular weight of 300.336 g/mol. Key properties include a melting point of 247-2480C, a boiling point of 557.0±52.0 °C at 760 mmHg, a density of 1.5±0.1 g/cm3 and a flash point of 290.7±30.7 °C. It is classified under GHS with signal word Danger and hazard statements H302 — Harmful if swallowed, H317 — May cause an allergic skin reaction and H334 — May cause allergy or asthma symptoms if inhaled. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
59-40-5
Jingsj CID
J-33682-3
Molecular Formula
C14H12N4O2S
Molecular Weight
300.336 g/mol
Category
Pharma Intermediates
Last updated
8/21/2026

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Physicochemical Properties

Melting Point247-2480C
Boiling Point557.0±52.0 °C at 760 mmHg
Density1.5±0.1 g/cm3
Flash Point290.7±30.7 °C
Exact Mass300.068085
PSA106.35000
LogP1.58
Vapor Pressure0.0±1.5 mmHg at 25°C
Refractive Index1.718

GHS Safety & Compliance

Irritant / Health HazardSignal word: Danger
  • H302 — Harmful if swallowed
  • H317 — May cause an allergic skin reaction
  • H334 — May cause allergy or asthma symptoms if inhaled

Activity & Biological Data

TargetBacterial, Parasite[1][2]
Additional Information[1]. de Assis DC, et al. Evaluation of the Presence and Levels of Enrofloxacin, Ciprofloxacin, Sulfaquinoxaline and Oxytetracycline in Broiler Chickens after Drug Administration. PLoS One. 2016 Nov 15;11(11):e0166402. [2]. Urbano VR, et al. Influence of pH and ozone dose on sulfaquinoxaline ozonation. J Environ Manage. 2017 Jun 15;195(Pt 2):224-231.

Customs & Trade Information

HS Code2935009090
Summary2935009090 other sulphonamides VAT:17.0% Tax rebate rate:9.0% Supervision conditions:none MFN tariff:6.5% General tariff:35.0%

Frequently Asked Questions

What is the CAS number of Sulfaquinoxaline?

The CAS number of Sulfaquinoxaline is 59-40-5.

What are the molecular formula and molecular weight of Sulfaquinoxaline?

Sulfaquinoxaline has molecular formula C14H12N4O2S and molecular weight 300.336 g/mol.

Is Sulfaquinoxaline hazardous?

Sulfaquinoxaline has GHS signal word Danger and hazard statements H302 — Harmful if swallowed; H317 — May cause an allergic skin reaction; H334 — May cause allergy or asthma symptoms if inhaled.

What are the upstream and downstream products of Sulfaquinoxaline?

For Sulfaquinoxaline, Upstream Products: Quinoxalin-2-amine, Alloxazine;Isoalloxazine, N-Acetylsulfanilyl chloride.

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

Last updated:

How to cite: Jingsj. "Sulfaquinoxaline (CAS 59-40-5)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-33682-3 (accessed 2026-11-09).

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