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Pencycuron (CAS 66063-05-6) | ChemAbout

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1-(4-chlorophenyl)-4,4-dimethyl-3-pentanone

Agrochemical intermediate

ReferenceSame Category

1-(4-chlorophenyl)-4,4-dimethyl-2-(1H-1,2,4-triazol-1-yl)pentan-3-ol

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Related Reading

Why Does One Chemical Intermediate End Up in Dozens of Pesticides? Inside the Reaction Interface Economy

A single pyridine intermediate feeds four different neonicotinoid insecticides. A single pyrazole acid feeds a whole family of SDHI fungicides. This isn't coincidence — it's the Reaction Interface Economy, the organizing logic behind modern agrochemical R&D and its supply chain.

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C₁₉H₂₁ClN₂O

328.8 g/mol

AgrochemicalWarning

Pencycuron

CAS66063-05-6EC266-096-3

Category

Agrochemical

Compound Class

Amide

Primary Use

fungicide

Pencycuron is a fungicide used in agriculture to control fungal diseases. Its crystal structure has been determined, providing insight into its molecular conformation.

Content scope: Information here supports chemical identification and industrial supply, research, and manufacturing contexts. It is not a therapeutic claim, medical advice, or drug-use instructions.

Safety Reference

Environmental Hazard

Warning

H400Very toxic to aquatic life

H410Very toxic to aquatic life with long lasting effects

Customs Tariff Classification

The international HS code for Pencycuron (CAS 66063-05-6) is 2924.21.

HS code (international, 6-digit)

2924.21

EU CN code (8-digit)

2924 21 00

Classification per the EU customs inventory ECICS (2026-07 snapshot, HS 2022). National tariff lines and product form can affect the final classification.

Identifiers

IUPAC Name

1-[(4-chlorophenyl)methyl]-1-cyclopentyl-3-phenylurea

InChIKey

OGYFATSSENRIKG-UHFFFAOYSA-N

SMILES

C1CCC(C1)N(CC2=CC=C(C=C2)Cl)C(=O)NC3=CC=CC=C3

Synonyms (17)

BAY ntn 19701
Caswell No. 638A
MONCERAEN 250SC
Monceren
NTN 19701
Pencycuron
Pencycuron, PESTANAL(R)
Trotis