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Herbicides

Asulam

Also known as Asulox, Asilan, Asulox F

CAS 3337-71-1Formula C8H10N2O4SMolar mass 230.25 g/molEC 222-077-1
GHS signal word: Warning. Pictograms: Harmful or irritant 8 suppliers listed
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Asulam chemical structure, C8H10N2O4S, CAS 3337-71-1
2D chemical structure

Key facts

What buyers check first

All properties
Appearance
White crystals
Melting point
144.2 °C
Solubility
In water, 5.0 × 10⁺³ mg/L at 22 °C
HS code
293590
Category
Herbicides
Illustrative photo, colourless crystals in an open woven sack in a warehouse
Typical packagingIllustrative packaging image, not the actual product

What is Asulam?

Plain description, key identifiers and synonyms

Asulam is a carbamate ester that is methyl carbamate substituted by a (4-aminophenyl)sulfonyl group at the nitrogen atom. A dihydropteroate synthase inhibitor, it is used (normally as the corresponding sodium salt, asulam-sodium) as a herbicide, mainly for killing bracken. It has a role as a herbicide, an agrochemical, a xenobiotic, an EC 2.5.1.15 (dihydropteroate synthase) inhibitor and an environmental contaminant. It is a carbamate ester, a sulfonamide, a substituted aniline and a primary amino compound. It is a conjugate acid of an asulam(1-).

Identifiers

Registry numbers, names and line notations, tap to copy

IUPAC name
methyl N-(4-aminophenyl)sulfonylcarbamate
CAS number
3337-71-1 CAS number cross-checked
EC numbers
222-077-1, 689-264-1
Molecular formula
C8H10N2O4S
UNII
0Y5ASM7P5S
MDL number
MFCD00055534
InChIKey
VGPYEHKOIGNJKV-UHFFFAOYSA-N
InChI
InChI=1S/C8H10N2O4S/c1-14-8(11)10-15(12,13)7-4-2-6(9)3-5-7/h2-5H,9H2,1H3,(H,10,11)
SMILES (canonical and isomeric)
COC(=O)NS(=O)(=O)C1=CC=C(C=C1)N

Synonyms

  • Asulox
  • Asilan
  • Asulox F
  • Jonnix
  • Plakin
  • Asulox 40
  • Methyl sulfanilylcarbamate
  • Methyl sulphanilylcarbamate
  • MB 9057
  • Asulame
  • Methyl sulfanilyl carbamate
  • M and B 9057
  • Methyl N-(4-aminobenzenesulfonyl)carbamate
  • Carbamic acid, [(4-aminophenyl)sulfonyl]-, methyl ester
  • Carbamic acid, sulfanilyl-, methyl ester
  • Methyl N-(4-aminophenyl)sulfonylcarbamate
  • Methyl ((4-aminophenyl)sulfonyl)carbamate
  • Methyl 4-aminobenzenesulphonyl carbamate
  • 4-Amino-benzolsulfonyl-methylcarbamat
  • Methyl 4-aminophenylsulphonylcarbamate
  • Methyl 4-aminophenylsulphonyl carbamate
  • Methyl p-aminobenzenesulfonylcarbamate
  • N(sup 1)-Methoxycarbonylsulfanilamide
  • Methyl 4-aminobenzenesulfonyl carbamate
  • Carbamic acid, ((4-aminophenyl)sulfonyl)-, methyl ester
Show all 36 synonyms
  • methyl [(4-aminophenyl)sulfonyl]carbamate
  • M & B 9057
  • sodium ((4-aminophenyl)sulfonyl)(methoxycarbonyl)azanide
  • Carbamic acid, sulfanilyl-, methyl ester (7CI)
  • Asulame [ISO-French]
  • Methyl 4-aminobenzenesulphonylcarbamate
  • Methyl N-(4-aminophenylsulfonyl)carbamate
  • Asulox F, M and B 9057, MB 9057, Methyl p-aminobenzenesulfonylcarbamate,
  • Furfenorex (1.0mg/ml in Acetonitrile)
  • N1-Methoxycarbonylsulfanilamide
  • Sulfanilylcarbamic Acid Methyl Ester

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

Appearance
White crystalsexp.
Melting point
144.2 °Cexp.
Solubility
In water, 5.0 × 10⁺³ mg/L at 22 °Cexp.

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
230.25 g/molcalc.
Exact mass
230.0361 Dacalc.
LogP (octanol/water)
0.31calc.
Topological polar surface area
98.49 Ųcalc.
Hydrogen bond donors
2calc.
Hydrogen bond acceptors
5calc.
Rotatable bonds
2calc.
Heavy atoms
15calc.
Rings
1calc.
Aromatic rings
1calc.
Fraction sp3 carbons
0.13calc.
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, c1ccccc1

c1ccccc1

1 ring, 6 atoms, the Benzene ring system.

485,677 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

Hazard statements

  • H302Harmful if swallowed.
Precautionary statements (5)
  • P264Wash skin thoroughly after handling.
  • P270Do not eat, drink or smoke when using this product.
  • P301 + P317If swallowed: Get medical help.
  • P330Rinse mouth.
  • 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

Asulam suppliers

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

All 8 suppliers
8 of 8 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

8 suppliers in 4 countries

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Asulam price

Indicative price range per kg from live supplier offers

No published prices right now

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Uses and applications

What the substance is used for, by industry and function

Asulam (methyl sulfanilylcarbamate) is a herbicide used for weed control on sugarcane, Christmas tree plantations, ornamentals, turf, and noncropland uses. Asulam is formulated into and applied as the asulam sodium salt.

Asulam, a cell-division inhibitor, is a selective, systemic herbicide, translocated, used for the control of annual and perennial grasses and broad-leaved weeds in a variety of crops, grassland, noncropland, and forestry.

Use classes: Pesticides.

Roles

  • agrochemical
  • environmental contaminant
  • enzyme inhibitor
  • herbicide
  • pesticide
  • xenobiotic

How it is made

Asulam is produced by reaction of 4-aminobenzenesulfonamide, after protection of the amino group, with ethyl chloroformate in the presence of a base.

Preparation: Belgium patent 622214 (1963 to May & Baker).

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 Asulam 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 Asulam is indicative (it was assigned by structure rules). Confirm the classification with your customs broker before shipping.

Frequently asked questions

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

What is Asulam?

Asulam is a carbamate ester that is methyl carbamate substituted by a (4-aminophenyl)sulfonyl group at the nitrogen atom. A dihydropteroate synthase inhibitor, it is used (normally as the corresponding sodium salt, asulam-sodium) as a herbicide, mainly for killing bracken.

What is the CAS number of Asulam?

The CAS registry number of Asulam is 3337-71-1.

What is the molecular formula and weight of Asulam?

The molecular formula of Asulam is C8H10N2O4S and its molar mass is 230.25 g/mol.

What is Asulam used for?

Asulam (methyl sulfanilylcarbamate) is a herbicide used for weed control on sugarcane, Christmas tree plantations, ornamentals, turf, and noncropland uses. Asulam is formulated into and applied as the asulam sodium salt.

Is Asulam hazardous?

Asulam carries the GHS signal word "Warning". Main hazards: harmful if swallowed. This summary is not an SDS, always read the supplier safety data sheet.

What is the HS code of Asulam?

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

Where can I buy Asulam?

CompoundList lists 8 suppliers of Asulam in Brazil, China, India and United Kingdom. Send one free request to get and compare quotes. Your contact details stay private until you accept a quote.

Where can I buy Asulam in India?

2 suppliers in India list Asulam on CompoundList. Filter the suppliers list by country and send a request to compare prices, grades and delivery times.

What is the price of Asulam?

Suppliers quote Asulam 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 Asulam

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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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