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Heterocyclic building blocks

Sulfalene

Also known as Sulfamethoxypyrazine, Sulfametopyrazine, 4-amino-N-(3-methoxypyrazin-2-yl)benzenesulfonamide

CAS 152-47-6Formula C11H12N4O3SMolar mass 280.31 g/molEC 205-804-7
GHS signal word: Warning. Pictograms: Harmful or irritant, Serious health hazard 47 suppliers listed
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Sulfalene chemical structure, C11H12N4O3S, CAS 152-47-6
2D chemical structure

Key facts

What buyers check first

All properties
CAS number
152-47-6
Formula
C11H12N4O3S
Molar mass
280.31 g/mol
EC number
205-804-7
HS code
293590
Category
Heterocyclic building blocks

What is Sulfalene?

Plain description, key identifiers and synonyms

Sulfamethopyrazine is a sulfonamide, a member of pyrazines and a sulfonamide antibiotic.

Identifiers

Registry numbers, names and line notations, tap to copy

IUPAC name
4-amino-N-(3-methoxypyrazin-2-yl)benzenesulfonamide
CAS number
152-47-6 CAS number cross-checkedOther or deprecated CAS: 5175-55-3
EC number
205-804-7
Molecular formula
C11H12N4O3S
UNII
T6BL4ZC15G
MDL number
MFCD00437754
InChIKey
KXRZBTAEDBELFD-UHFFFAOYSA-N
InChI
InChI=1S/C11H12N4O3S/c1-18-11-10(13-6-7-14-11)15-19(16,17)9-4-2-8(12)3-5-9/h2-7H,12H2,1H3,(H,13,15)
SMILES (canonical and isomeric)
COC1=NC=CN=C1NS(=O)(=O)C2=CC=C(C=C2)N

Synonyms

  • Sulfamethoxypyrazine
  • Sulfametopyrazine
  • 4-amino-N-(3-methoxypyrazin-2-yl)benzenesulfonamide
  • Sulfamethopyrazine
  • Kelfizina
  • Kelfizine
  • Kelfizine W
  • Benzenesulfonamide, 4-amino-N-(3-methoxypyrazinyl)-
  • 2-(p-Aminobenzenesulfanamide)-3-methoxypyrazine
  • AS 18908
  • FI 5978
  • N(sup 1)-(3-Methoxypyrazinyl)sulfanilamide
  • WR 4629
  • 4-amino-N-(3-methoxypyrazin-2-yl)benzene-1-sulfonamide
  • Sulphalene
  • Sulphametopyrazine
  • Sulfamethoxysuccinate
  • Sulfapyrazinmethoxine
  • Sulfalen
  • Kelfizin
  • Dalysep
  • Sulfapyrazinemethoxyine
  • Sulfapyrazinemethoxine
  • Sulfapyrazinemethoxyne
  • Farmitalia 204/122
Show all 38 synonyms
  • 3-Methoxy-2-sulfapyrazine
  • Sulfaleno
  • 2-Sulfanilamido-3-methoxypyrazine
  • 3-Methoxy-2-sulfanilamidopyrazine
  • 3-Methoxypyrazine sulfanilamide
  • 2-Methoxy-3-sulfanilamidopyrazine
  • N1-(3-Methoxypyrazinyl)sulfanilamide
  • 2-(p-Aminobenzenesulfonamido)-3-methoxypyrazine
  • F.I. 5978
  • Pyrazine, 2-sulfanilamido-3-methoxy-
  • 4-Amino-N-(3-methoxypyrazinyl)benzenesulfonamide
  • N(sup1)-(3-Methoxypyrazinyl)sulfanilamide
  • N(sup1)-(3-Methoxy-2-pyrazinyl)sulfanilamide

Physical and chemical properties

Measured values and descriptors computed from the structure

Physical and chemical properties

Measured values, check the supplier specification for your grade

No measured properties are recorded for this substance yet. Ask suppliers for a technical data sheet.

Values vary by grade. Ask suppliers for the COA or TDS of the batch you buy.

Computed descriptors

Calculated from the structure, useful for screening and formulation

Molecular weight
280.31 g/molcalc.
Exact mass
280.063 Dacalc.
LogP (octanol/water)
0.87calc.
Topological polar surface area
107.2 Ųcalc.
Hydrogen bond donors
2calc.
Hydrogen bond acceptors
6calc.
Rotatable bonds
4calc.
Heavy atoms
19calc.
Rings
2calc.
Aromatic rings
2calc.
Fraction sp3 carbons
0.09calc.
Formal charge
0calc.
Stereocentres
0calc.
Lipinski rule of five
Passes (0 violations)calc.

Calculated for screening. Confirm critical figures with the supplier.

Murcko scaffold

The ring system that remains when every side chain is removed

Murcko scaffold of this chemical, O=S(=O)(Nc1cnccn1)c1ccccc1

O=S(=O)(Nc1cnccn1)c1ccccc1

2 rings, 16 atoms, the N-Pyrazin-2-ylbenzenesulfonamide ring system.

65 other chemicals share this scaffold

Safety and hazards

GHS classification summary, not a safety data sheet

GHS signal word
Warning
GHS07: Harmful or irritant
Harmful or irritant
GHS08: Serious health hazard
Serious health hazard

Hazard statements

  • H302Harmful if swallowed.
  • H315Causes skin irritation.
  • H319Causes serious eye irritation.
  • H361Suspected of damaging fertility or the unborn child.
  • H362May cause harm to breast-fed children.
Precautionary statements (18)
  • P203Obtain, read and follow all safety instructions before use.
  • P260Do not breathe dust, fume, gas, mist, vapours or spray.
  • P263Avoid contact during pregnancy and while nursing.
  • P264Wash skin thoroughly after handling.
  • P264 + P265Wash skin thoroughly after handling. Do not touch eyes.
  • P270Do not eat, drink or smoke when using this product.
  • P280Wear protective gloves, protective clothing, eye protection and face protection.
  • P301 + P317If swallowed: Get medical help.
  • P302 + P352If on skin: Wash with plenty of water.
  • P305 + P351 + P338If in eyes: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing.
  • P318If exposed or concerned, get medical advice.
  • P321Specific treatment (see supplemental first aid instructions on the label).
  • P330Rinse mouth.
  • P332 + P317If skin irritation occurs: Get medical help.
  • P337 + P317If eye irritation persists: Get medical help.
  • P362 + P364Take off contaminated clothing. And wash it before reuse.
  • P405Store locked up.
  • P501Dispose of contents and container in accordance with local regulations.

GHS classification summary, not a safety data sheet (SDS). Classifications can differ by supplier, grade and concentration. Always check the supplier's SDS.

Full safety data and first aid

Sulfalene suppliers

Sponsored listings first, then the documented ranking: membership, verification, replies, completeness, freshness and ratings

All 47 suppliers
30 of 30 offers

Suppliers marked Unclaimed profile have not claimed their profile yet. They are not verified by CompoundList, their offers are price on request and details may have changed, so please confirm them with the supplier. Company representatives can claim a profile with a business email on the company's own website domain. Our team verifies each claim and sends the result by email.

Where suppliers are based

47 suppliers in 10 countries

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Sulfalene price

Indicative price range per kg from live supplier offers

No published prices right now

Suppliers quote this chemical on request. Send one free request and compare quotes side by side.

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Uses and applications

What the substance is used for, by industry and function

Use classes: Pharmaceuticals.

Pharmacological actions

  • Anti-Infective Agents
  • Anti-Infective Agents, Urinary
  • Antimalarials

Roles

  • antibacterial agent
  • antiinfective agent
  • antimalarial
  • antimicrobial agent
  • antimicrobial drug
  • antiparasitic agent
  • antiplasmodial drug
  • antiprotozoal drug
  • pharmaceutical

Pharmacology

Sulfalene is a long-acting sulfonamide antibiotic used for the treatment of chronic bronchitis, urinary tract infections and malaria.

Regulatory status

Inventories, regulations and trade controls that list this substance

No regulatory list memberships are recorded for this substance yet. Always check the rules of the importing and exporting country before trade.

HS code and trade data

Customs classification and reported world trade statistics

Global trade

World import and export statistics for the HS code Sulfalene is traded under.

HS 2935.90Indicative HS code

Sulphonamides, other

World exports in 2024
$5.64B
−11.0% vs 2023, imports $8.56B
2019 to 2024
Top exporters
  1. Ireland43.1%
  2. China12.0%
  3. India * partner reported9.5%
Top importers
  1. United States23.6%
  2. Slovenia19.1%
  3. Spain11.7%

* Partner reported figures, a lower bound.

Reported customs values in USD, not prices.Full trade data

The HS code shown for Sulfalene is indicative (it was assigned by structure rules). Confirm the classification with your customs broker before shipping.

Frequently asked questions

Quick answers about Sulfalene, based on the data on this page

What is Sulfalene?

Sulfamethopyrazine is a sulfonamide, a member of pyrazines and a sulfonamide antibiotic.

What is the CAS number of Sulfalene?

The CAS registry number of Sulfalene is 152-47-6. Other or deprecated CAS numbers: 5175-55-3.

What is the molecular formula and weight of Sulfalene?

The molecular formula of Sulfalene is C11H12N4O3S and its molar mass is 280.31 g/mol.

What is Sulfalene used for?

Use classes: Pharmaceuticals.

Is Sulfalene hazardous?

Sulfalene carries the GHS signal word "Warning". Main hazards: harmful if swallowed, causes skin irritation, causes serious eye irritation. This summary is not an SDS, always read the supplier safety data sheet.

What is the HS code of Sulfalene?

Sulfalene is usually classified under HS code 293590 (Sulphonamides, other). This is indicative, confirm it with your customs broker before shipping.

Where can I buy Sulfalene?

CompoundList lists 47 suppliers of Sulfalene in China, United States, Hong Kong, Germany and 6 more. Send one free request to get and compare quotes. Your contact details stay private until you accept a quote.

What is the price of Sulfalene?

Suppliers quote Sulfalene on request because prices depend on grade, purity, quantity and destination. A free request on CompoundList gets you several quotes to compare.

Guides for buyers

Practical guides that help when you source, ship or handle Sulfalene

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Data last updated 7 Oct 2026. Details may have changed, please confirm them with the supplier. Report an error on this page
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