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Fungicides

Dimethirimol

Also known as Milcurb, Dimethyrimol, Melkeb

CAS 5221-53-4Formula C11H19N3OMolar mass 209.29 g/molEC 226-021-7
GHS signal word: Danger. Pictograms: Acute toxicity (severe) 1 supplier listed
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Dimethirimol chemical structure, C11H19N3O, CAS 5221-53-4
2D chemical structure

Key facts

What buyers check first

All properties
CAS number
5221-53-4
Formula
C11H19N3O
Molar mass
209.29 g/mol
EC number
226-021-7
HS code
293359
Category
Fungicides

What is Dimethirimol?

Plain description, key identifiers and synonyms

Dimethirimol is a member of the class of aminopyrimidines that is 2-dimethylaminopyrimidine carrying methyl, butyl and hydroxy substituents at posiitons 4, 5 and 6 respectively. A fungicide first marketed in 1970, and used particularly in glasshouses to control powdery mildew, it is no longer approved for use within the European Union. It has a role as an antifungal agrochemical. It is an aminopyrimidine, a hydroxypyrimidine, a tertiary amino compound and a pyrimidine fungicide.

Identifiers

Registry numbers, names and line notations, tap to copy

IUPAC name
5-butyl-2-(dimethylamino)-4-methyl-1H-pyrimidin-6-one
CAS number
5221-53-4 CAS number cross-checked
EC number
226-021-7
Molecular formula
C11H19N3O
UNII
1V1RC2A67P
InChIKey
CJHXCRMKMMBYJQ-UHFFFAOYSA-N
InChI
InChI=1S/C11H19N3O/c1-5-6-7-9-8(2)12-11(14(3)4)13-10(9)15/h5-7H2,1-4H3,(H,12,13,15)
SMILES (canonical and isomeric)
CCCCC1=C(N=C(NC1=O)N(C)C)C

Synonyms

  • Milcurb
  • Dimethyrimol
  • Melkeb
  • 5-Butyl-2-(dimethylamino)-6-methyl-4(1H)-pyrimidinone
  • 5-Butyl-2-(dimethylamino)-6-methyl-4-pyrimidinol
  • 5-Butyl-2-dimethylamino-4-hydroxy-6-methylpyrimidine
  • 2-Dimethylamino-4-methyl-5-n-butyl-6-hydroxypyrimidine
  • 2-Dimethylamino-4-hydroxy-5-n-butyl-6-methylpyrimidine
  • 5-n-Butyl-2-dimethylamino-4-hydroxy-6-methylpyrimidine
  • 2-Dimethylamino-6-hydroxy-4-methyl-5-butylpyrimidine
  • Methyrimol
  • PP 675
  • 4(1H)-Pyrimidinone, 5-butyl-2-(dimethylamino)-6-methyl-
  • 2-(Dimethylamino)-4-hydroxy-5-N-butyl-6-methylpyrimidine
  • 4-Pyrimidinol, 5-butyl-2-(dimethylamino)-6-methyl-
  • 5-butyl-2-(dimethylamino)-4-methyl-1H-pyrimidin-6-one
  • 5-butyl-2-(dimethylamino)-6-methylpyrimidin-4-ol
  • 5-n-Butyl-2-(dimethylamino)-4-hydroxy-6-methylpyrimidine
  • Dimethyrimol [ISO-French]
  • Dimethrimol
  • 4-Pyrimidinol, 5-butyl-2-dimethylamino-6-methyl-
  • 2-dimethylamino-6-methyl-5-n-butyl-4-hydroxy-pyrimidine
  • Dimethirimol, PESTANAL(R), analytical standard
  • 5-Butyl-2-(dimethylamino)-6-methyl-4(3H)-pyrimidinone
  • 5-butyl-2-(dimethylamino)-6-methylpyrimidin-4(1H)-one
Show all 26 synonyms
  • 5-butyl-2-(dimethylamino)-6-methyl-3,4-dihydropyrimidin-4-one

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
209.29 g/molcalc.
Exact mass
209.1528 Dacalc.
LogP (octanol/water)
1.49calc.
Topological polar surface area
48.99 Ųcalc.
Hydrogen bond donors
1calc.
Hydrogen bond acceptors
3calc.
Rotatable bonds
4calc.
Heavy atoms
15calc.
Rings
1calc.
Aromatic rings
1calc.
Fraction sp3 carbons
0.64calc.
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=c1ccnc[nH]1

O=c1ccnc[nH]1

1 ring, 7 atoms, the 4-Hydroxypyrimidine ring system.

3,090 other chemicals share this scaffold

Safety and hazards

GHS classification summary, not a safety data sheet

GHS signal word
Danger
GHS06: Acute toxicity (severe)
Acute toxicity (severe)

Hazard statements

  • H311Toxic in contact with skin.
Precautionary statements (10)
  • P262Do not get in eyes, on skin, or on clothing.
  • P264Wash skin thoroughly after handling.
  • P270Do not eat, drink or smoke when using this product.
  • P280Wear protective gloves, protective clothing, eye protection and face protection.
  • P302 + P352If on skin: Wash with plenty of water.
  • P316Get emergency medical help immediately.
  • P321Specific treatment (see supplemental first aid instructions on the label).
  • P361 + P364Take off immediately all 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

Dimethirimol suppliers

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Where suppliers are based

1 supplier in 1 country

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Dimethirimol 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

Roles

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

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 Dimethirimol is traded under.

HS 2933.59Indicative HS code

Compounds containing a pyrimidine ring (whether or not hydrogenated) or piperazine ring, other

World exports in 2024
$18.4B
+10.5% vs 2023, imports $24.8B
2019 to 2024
Top exporters
  1. Ireland43.6%
  2. Switzerland * partner reported26.3%
  3. China7.9%
Top importers
  1. Slovenia30.3%
  2. United States30.1%
  3. Germany15.3%

* Partner reported figures, a lower bound.

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

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

Frequently asked questions

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

What is Dimethirimol?

Dimethirimol is a member of the class of aminopyrimidines that is 2-dimethylaminopyrimidine carrying methyl, butyl and hydroxy substituents at posiitons 4, 5 and 6 respectively.

What is the CAS number of Dimethirimol?

The CAS registry number of Dimethirimol is 5221-53-4.

What is the molecular formula and weight of Dimethirimol?

The molecular formula of Dimethirimol is C11H19N3O and its molar mass is 209.29 g/mol.

What is Dimethirimol used for?

Known uses and roles of Dimethirimol include fungicides in agriculture and crop protection, agrochemical, antifungal agent, antifungal agrochemical, antimicrobial agent and 2 more.

Is Dimethirimol hazardous?

Dimethirimol carries the GHS signal word "Danger". Main hazards: toxic in contact with skin. This summary is not an SDS, always read the supplier safety data sheet.

What is the HS code of Dimethirimol?

Dimethirimol is usually classified under HS code 293359 (Compounds containing a pyrimidine ring (whether or not hydrogenated) or piperazine ring…). This is indicative, confirm it with your customs broker before shipping.

Where can I buy Dimethirimol?

CompoundList lists 1 supplier of Dimethirimol in Japan. Send one free request to get and compare quotes. Your contact details stay private until you accept a quote.

What is the price of Dimethirimol?

Suppliers quote Dimethirimol 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 Dimethirimol

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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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