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Herbicides

Norflurazon

Also known as Solicam, Zorial, Norflurazone

CAS 27314-13-2Formula C12H9ClF3N3OMolar mass 303.67 g/molEC 248-397-1
GHS signal word: Warning. Pictograms: Hazardous to the environment 6 suppliers listed
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Norflurazon chemical structure, C12H9ClF3N3O, CAS 27314-13-2
2D chemical structure

Key facts

What buyers check first

All properties
Appearance
White to greyish brown, crystalline powder
Melting point
184 °C
Solubility
In water, 33.7 mg/L at 25 °C
HS code
293399
Category
Herbicides
UN number
UN 3077
Illustrative photo, off-white crystalline powder in fibre drums in a warehouse
Typical packagingIllustrative packaging image, not the actual product

What is Norflurazon?

Plain description, key identifiers and synonyms

Norflurazon is a pyridazinone that is pyridazin-3(2H)-one which is substituted at positions 2, 4, and 5 by m-(trifluoromethyl)phenyl, chloro, and methylamino groups, respectively. A pre-emergence herbicide used to control grasses and broad-leafed weeds in a variety of crops. Not approved for use within the European Union. It has a role as a carotenoid biosynthesis inhibitor, a herbicide and an agrochemical. It is a pyridazinone, an organochlorine compound, a secondary amino compound and a member of (trifluoromethyl)benzenes.

Identifiers

Registry numbers, names and line notations, tap to copy

IUPAC name
4-chloro-5-(methylamino)-2-[3-(trifluoromethyl)phenyl]pyridazin-3-one
CAS number
27314-13-2 CAS number cross-checked
EC number
248-397-1
Molecular formula
C12H9ClF3N3O
UNII
KES1HB07E4
MDL number
MFCD00128055
InChIKey
NVGOPFQZYCNLDU-UHFFFAOYSA-N
InChI
InChI=1S/C12H9ClF3N3O/c1-17-9-6-18-19(11(20)10(9)13)8-4-2-3-7(5-8)12(14,15)16/h2-6,17H,1H3
SMILES (canonical and isomeric)
CNC1=C(C(=O)N(N=C1)C2=CC=CC(=C2)C(F)(F)F)Cl

Synonyms

  • Solicam
  • Zorial
  • Norflurazone
  • Evital
  • Monometflurazon
  • Telok
  • SAN 9789
  • Monometflurazone
  • Evitol
  • Solicam Rapid
  • Zorial Rapid 80
  • Norflurazon technical
  • Predict
  • 4-Chloro-5-(methylamino)-2-(alpha,alpha,alpha-trifluoro-m-tolyl)-3(2H)-pyridazinone
  • SAN 9789 H
  • 4-Chloro-5-(methylamino)-2-[3-(trifluoromethyl)phenyl]-3(2H)-pyridazinone
  • San 97895
  • 1-(3-Trifluoromethylphenyl)-4-methylamino-5-chloropyridazone
  • 4-Chloro-5-methylamino-2-(3-trifluoromethylphenyl)pyridazin-3-one
  • 4-Chloro-5-(methylamino)-2-(3-(trifluoromethyl)phenyl)-3(2H)-pyridazinone
  • 4-Chloro-5-(methylamino)-2-(3-(trifluoromethyl)phenyl)pyridazin-3(2H)-one
  • 4-chloro-5-(methylamino)-2-[3-(trifluoromethyl)phenyl]pyridazin-3(2H)-one
  • norfluorazon
  • 4-chloro-5-(methylamino)-2-(alpha, alpha, alpha-trifluoro-m-tolyl)-3(2H)-pyridazinone
  • 4-chloro-5-(methylamino)-2-(3-(trifluoromethyl)phenyl)-2,3-dihydropyridazin-3-one
Show all 34 synonyms
  • 4-chloro-5-methylamino-2-(alpha,alpha,alpha-trifluoro-m-tolyl)pyridazin-3(2h)-one
  • Solicam, Zorial, SAN 9789
  • 4-chloro-5-(methylamino)-2-[3-(trifluoromethyl)phenyl]pyridazin-3-one
  • 3(2H)-Pyridazinone, 4-chloro-5-(methylamino)-2-[3-(trifluoromethyl)phenyl]-
  • 3(2H)-Pyridazinone, 4-chloro-5-(methylamino)-2-(3-(trifluoromethyl)phenyl)-
  • Sandoz 9789
  • Norflurazone [ISO-French]
  • Norflurazon Standard
  • 5-25-14-00201 (Beilstein Handbook Reference)

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 to greyish brown, crystalline powderexp.
Odour
Odorlessexp.
Melting point
184 °Cexp.
Solubility
In water, 33.7 mg/L at 25 °Cexp.
Vapour pressure
2.89 × 10⁻⁸ mm Hg at 25 °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
303.67 g/molcalc.
Exact mass
303.0386 Dacalc.
LogP (octanol/water)
2.95calc.
Topological polar surface area
46.92 Ųcalc.
Hydrogen bond donors
1calc.
Hydrogen bond acceptors
3calc.
Rotatable bonds
2calc.
Heavy atoms
20calc.
Rings
2calc.
Aromatic rings
2calc.
Fraction sp3 carbons
0.17calc.
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=c1cccnn1-c1ccccc1

O=c1cccnn1-c1ccccc1

2 rings, 13 atoms, the 2-Phenyl-3(2H)-pyridazinone ring system.

525 other chemicals share this scaffold

Safety and hazards

GHS classification summary, not a safety data sheet

GHS signal word
Warning
GHS09: Hazardous to the environment
Hazardous to the environment

Hazard statements

  • H400Very toxic to aquatic life.
  • H410Very toxic to aquatic life with long lasting effects.
Precautionary statements (3)
  • P273Avoid release to the environment.
  • P391Collect spillage.
  • P501Dispose of contents and container in accordance with local regulations.
UN number
UN 3077

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

Norflurazon suppliers

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

All 6 suppliers
6 of 6 offers
  • Tessenderlo Kerley, Inc
    United States, Phoenix ManufacturerUnclaimed profile
    NorflurazonGrade, purity and minimum order on request
    Price on request
    View
  • SantoLubes LLC
    United States, Spartanburg ManufacturerUnclaimed profile
    NorflurazonGrade, purity and minimum order on request
    Price on request
    View
  • AChemBlock
    United States, HaywardUnclaimed profile
    NorflurazonGrade, purity and minimum order on request
    Price on request
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  • ChemBridge Corporation
    United States, San DiegoUnclaimed profile
    NorflurazonGrade, purity and minimum order on request
    Price on request
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  • ChemShuttle
    United States, BurlingameUnclaimed profile
    NorflurazonGrade, purity and minimum order on request
    Price on request
    View
  • Specs
    Netherlands, ZoetermeerUnclaimed profile
    NorflurazonGrade, purity and minimum order on request
    Price on request
    View

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

6 suppliers in 2 countries

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Norflurazon price

Indicative price range per kg from live supplier offers

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Uses and applications

What the substance is used for, by industry and function

Norflurazon is a selective preemergent herbicide used to control germinating annual grasses and broadleaf weeds in fruits, vegetables, nuts, cotton, peanuts, soybeans, and various nonagricultural and industrial areas. Formulations include granular, flowable concentrate, and water dispersible granules.

For manufacturing use only in formulating herbicides /Norflurazon Technical/[EPA/OPPTS, Pesticide Product Label System (PPLS) - Search Results for Norflurazon Technical Product Label. 5 p. (August 26, 2003).

Read more

Accessed from a Database Query at http://oaspub.epa.gov/pestlabl/ppls.home.

Norflurazon controls grasses, sedges, and rushes such as crabgrass, foxtail, goosegrass, barnyardgrass, fall panicum, signalgrass, povertygrass, rice cutgrass, needlegrass, smokegrass, spikerush, annual bluegrass, fescues, ripgut grass, ryegrass, wild barley, witchgrass, and many broadleaf weeds, such as prickly sida, common purslane, ragweed, spurred anoda, carpetweed, Florida purslane, cheeseweed, chickweed, false dandelion, fiddleneck, filaree, horseweed, London rocket, pineappleweed, puncture vine, redmaids, Russian thistle, and Shepherdspurse. ... Suppression or control ... for nutsedges, bermudagrass, quackgrass, groundsel, annual morning-glory, cocklebur, common lambsquarters, sowthistle, and pigweed. Norflurazon has practical crop tolerance for cotton, cranberries, citrus, apricots, cherries, filberts, nectarines, peaches, plums, prunes, and walnuts.

Use classes: Pharmaceuticals.

Pharmacological actions

  • Herbicides

Roles

  • agrochemical
  • carotenoid biosynthesis inhibitor
  • enzyme inhibitor
  • herbicide
  • pathway inhibitor
  • pesticide

Functional uses

  • Biocide

How it is made

Preparation: C. Ebner, M. Schuler, BE 712832, eidem, US 3644355 (1968, 1972 both to Sandoz).

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 Norflurazon is traded under.

HS 2933.99Indicative HS code

Heterocyclic compounds with nitrogen hetero-atom(s) only, other

World exports in 2024
$12.1B
−31.0% vs 2023, imports $28.8B
2019 to 2024
Top exporters
  1. China30.5%
  2. India * partner reported16.3%
  3. Ireland9.0%
Top importers
  1. Slovenia31.7%
  2. Italy24.2%
  3. United States5.0%

* Partner reported figures, a lower bound.

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

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

Frequently asked questions

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

What is Norflurazon?

Norflurazon is a pyridazinone that is pyridazin-3(2H)-one which is substituted at positions 2, 4, and 5 by m-(trifluoromethyl)phenyl, chloro, and methylamino groups, respectively. A pre-emergence herbicide used to control grasses and broad-leafed weeds in a variety of crops.

What is the CAS number of Norflurazon?

The CAS registry number of Norflurazon is 27314-13-2.

What is the molecular formula and weight of Norflurazon?

The molecular formula of Norflurazon is C12H9ClF3N3O and its molar mass is 303.67 g/mol.

What is Norflurazon used for?

Norflurazon is a selective preemergent herbicide used to control germinating annual grasses and broadleaf weeds in fruits, vegetables, nuts, cotton, peanuts, soybeans, and various nonagricultural and industrial areas. Formulations include granular, flowable concentrate, and water dispersible granules.

Is Norflurazon hazardous?

Norflurazon carries the GHS signal word "Warning". Main hazards: very toxic to aquatic life, very toxic to aquatic life with long lasting effects. This summary is not an SDS, always read the supplier safety data sheet.

What is the HS code of Norflurazon?

Norflurazon is usually classified under HS code 293399 (Heterocyclic compounds with nitrogen hetero-atom(s) only, other). This is indicative, confirm it with your customs broker before shipping.

Where can I buy Norflurazon?

CompoundList lists 6 suppliers of Norflurazon in United States and Netherlands. Send one free request to get and compare quotes. Your contact details stay private until you accept a quote.

What is the price of Norflurazon?

Suppliers quote Norflurazon 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 Norflurazon

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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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