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Fungicides

Pyriofenone

Also known as (5-chloro-2-methoxy-4-methylpyridin-3-yl)(2,3,4-trimethoxy-6-methylphenyl)methanone, (5-chloro-2-methoxy-4-methyl-3-pyridinyl)(2,3,4-trimethoxy-6-methylphenyl)methanone, (5-chloro-2-methoxy-4-methyl-3-pyridyl)(4,5,6-trimethoxy-o-tolyl)methanone

CAS 688046-61-9Formula C18H20ClNO5Molar mass 365.81 g/molEC 692-456-8
GHS signal word: Warning. Pictograms: Serious health hazard, Hazardous to the environment 9 suppliers listed
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Pyriofenone chemical structure, C18H20ClNO5, CAS 688046-61-9
2D chemical structure

Key facts

What buyers check first

All properties
CAS number
688046-61-9
Formula
C18H20ClNO5
Molar mass
365.81 g/mol
EC number
692-456-8
HS code
293339
Category
Fungicides

What is Pyriofenone?

Plain description, key identifiers and synonyms

Pyriofenone is an aromatic ketone that is metrafenone in which the 3-bromo-6-methoxy-2-methylphenyl group is replaced by a 5-chloro-2-methoxy-4-methylpyridin-3-yl group. It is a fungicide developed for the control of powdery mildew in cereals and grape vines. It has a role as an antifungal agrochemical. It is an aromatic ether, a chloropyridine, an aromatic ketone and an aryl phenyl ketone fungicide.

Identifiers

Registry numbers, names and line notations, tap to copy

IUPAC name
(5-chloro-2-methoxy-4-methyl-3-pyridinyl)-(2,3,4-trimethoxy-6-methylphenyl)methanone
CAS number
688046-61-9 CAS number cross-checked
EC number
692-456-8
Molecular formula
C18H20ClNO5
UNII
4ER76S8IFJ
InChIKey
NMVCBWZLCXANER-UHFFFAOYSA-N
InChI
InChI=1S/C18H20ClNO5/c1-9-7-12(22-3)16(23-4)17(24-5)13(9)15(21)14-10(2)11(19)8-20-18(14)25-6/h7-8H,1-6H3
SMILES (canonical and isomeric)
CC1=CC(=C(C(=C1C(=O)C2=C(C(=CN=C2OC)Cl)C)OC)OC)OC

Synonyms

  • (5-chloro-2-methoxy-4-methylpyridin-3-yl)(2,3,4-trimethoxy-6-methylphenyl)methanone
  • (5-chloro-2-methoxy-4-methyl-3-pyridinyl)(2,3,4-trimethoxy-6-methylphenyl)methanone
  • (5-chloro-2-methoxy-4-methyl-3-pyridyl)(4,5,6-trimethoxy-o-tolyl)methanone
  • (5-chloro-2-methoxy-4-methylpyridin-3-yl)-(2,3,4-trimethoxy-6-methylphenyl)methanone
  • IKF 309
  • 3-(2,3,4-Trimethoxy-6-methylbenzoyl)-5-chloro-2-methoxy-4-methylpyridine
  • C18H20ClNO5
  • Pyriofenone 100 microg/mL in Acetonitrile
  • (5-chloro-2-methoxy-4-methyl-3-pyridyl)-(2,3,4-trimethoxy-6-methyl-phenyl)methanone
  • Methanone, (5-chloro-2-methoxy-4-methyl-3-pyridinyl)(2,3,4-trimethoxy-6-methylphenyl)-

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
365.81 g/molcalc.
Exact mass
365.103 Dacalc.
LogP (octanol/water)
3.62calc.
Topological polar surface area
66.88 Ųcalc.
Hydrogen bond donors
0calc.
Hydrogen bond acceptors
6calc.
Rotatable bonds
6calc.
Heavy atoms
25calc.
Rings
2calc.
Aromatic rings
2calc.
Fraction sp3 carbons
0.33calc.
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=C(c1ccccc1)c1cccnc1

O=C(c1ccccc1)c1cccnc1

2 rings, 14 atoms, the Phenyl-3-pyridinylmethanone ring system.

579 other chemicals share this scaffold

Safety and hazards

GHS classification summary, not a safety data sheet

GHS signal word
Warning
GHS08: Serious health hazard
Serious health hazard
GHS09: Hazardous to the environment
Hazardous to the environment

Hazard statements

  • H351Suspected of causing cancer.
  • H410Very toxic to aquatic life with long lasting effects.
Precautionary statements (7)
  • P203Obtain, read and follow all safety instructions before use.
  • P273Avoid release to the environment.
  • P280Wear protective gloves, protective clothing, eye protection and face protection.
  • P318If exposed or concerned, get medical advice.
  • P391Collect spillage.
  • 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

Pyriofenone suppliers

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

All 9 suppliers
9 of 9 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

9 suppliers in 7 countries

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Pyriofenone 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: Fungicides.

Roles

  • agrochemical
  • antifungal agent
  • antifungal agrochemical
  • antimicrobial agent
  • fungicide
  • pesticide

Regulatory status

Inventories, regulations and trade controls that list this substance

Europe

  • EU harmonised classification (CLP Annex VI)
    Index no: 606-152-00-X

Health and food

  • EU Cosmetics Regulation Annex II, prohibited in cosmetics
    Name: (5-chloro-2-methoxy-4-methyl-3-pyridyl)(4,5,6-trimethoxy-o-tolyl)methanone, pyriofenone, Ref no: 1683, Annex ref: II/1683

HS code and trade data

Customs classification and reported world trade statistics

Global trade

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

HS 2933.39Indicative HS code

Heterocyclic compounds containing an unfused pyridine ring (whether or not hydrogenated) in the structure…

World exports in 2024
$9.16B
−17.9% vs 2023, imports $10.6B
2019 to 2024
Top exporters
  1. China21.5%
  2. India * partner reported12.3%
  3. Ireland11.6%
Top importers
  1. Germany14.2%
  2. United States12.8%
  3. Brazil10.1%

* Partner reported figures, a lower bound.

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

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

Frequently asked questions

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

What is Pyriofenone?

Pyriofenone is an aromatic ketone that is metrafenone in which the 3-bromo-6-methoxy-2-methylphenyl group is replaced by a 5-chloro-2-methoxy-4-methylpyridin-3-yl group. It is a fungicide developed for the control of powdery mildew in cereals and grape vines. It has a role as an antifungal agrochemical.

What is the CAS number of Pyriofenone?

The CAS registry number of Pyriofenone is 688046-61-9.

What is the molecular formula and weight of Pyriofenone?

The molecular formula of Pyriofenone is C18H20ClNO5 and its molar mass is 365.81 g/mol.

What is Pyriofenone used for?

Use classes: Fungicides.

Is Pyriofenone hazardous?

Pyriofenone carries the GHS signal word "Warning". Main hazards: suspected of causing cancer, 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 Pyriofenone?

Pyriofenone is usually classified under HS code 293339 (Compounds containing an unfused pyridine ring (whether or not hydrogenated) in the…). This is indicative, confirm it with your customs broker before shipping.

Where can I buy Pyriofenone?

CompoundList lists 9 suppliers of Pyriofenone in China, Brazil, Canada, France and 3 more. Send one free request to get and compare quotes. Your contact details stay private until you accept a quote.

Where can I buy Pyriofenone in India?

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

What is the price of Pyriofenone?

Suppliers quote Pyriofenone 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 Pyriofenone

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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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