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Butafenacil

Also known as: WC-9717, CGA-276854, 1-(Allyloxycarbonyl)-1-methylethyl 2-chloro-5-[1,2,3,6-tetrahydro-3-methyl-2,6-dioxo-4-(trifluoromethyl)pyrimidin-1-yl]benzoate, Benzoic acid, 2-chloro-5-[3,6-dihydro-3-methyl-2,6-dioxo-4-(trifluoromethyl)-1(2H)-pyrimidinyl]-, 1,1-dimethyl-2-oxo-2-(2-propenyloxy)ethyl ester, Fluobutracil, CGA 276865, 1,1-Dimethyl-2-oxo-2-(2-propenyloxy)ethyl 2-chloro-5-[3,6-dihydro-3-methyl-2,6-dioxo-4-(trifluoromethyl)-1(2H)-pyrimidinyl]benzoate

Butafenacil (CAS 134605-64-4) is a compound in the Esters category listed in the Jingsj chemical database. It has the molecular formula C20H18ClF3N2O6 and a molecular weight of 474.815 g/mol. Key properties include a melting point of 113ºC, a boiling point of 539.4±60.0 °C at 760 mmHg, a density of 1.4±0.1 g/cm3 and a flash point of 280.0±32.9 °C. It is classified under GHS with signal word Warning and hazard statements H400 — Very toxic to aquatic life. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
134605-64-4
Jingsj CID
J-48545-6
Molecular Formula
C20H18ClF3N2O6
Molecular Weight
474.815 g/mol
Category
Esters
Last updated
8/21/2026

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Physicochemical Properties

Melting Point113ºC
Boiling Point539.4±60.0 °C at 760 mmHg
Density1.4±0.1 g/cm3
Flash Point280.0±32.9 °C
Exact Mass474.080536
PSA96.60000
LogP3.63
Vapor Pressure0.0±1.4 mmHg at 25°C
Refractive Index1.536
Storage Conditions0-6°C

GHS Safety & Compliance

Environmental HazardSignal word: Warning
  • H400 — Very toxic to aquatic life

Activity & Biological Data

Additional Information[1]. Leet JK, et al. Butafenacil: A positive control for identifying anemia- and variegate porphyria-inducing chemicals. Toxicol Rep. 2015;2:976-983. Published 2015 Jul 13.

Customs & Trade Information

HS Code2933599020
Summary2933599020. VAT:17.0%. Tax rebate rate:9.0%. Supervision conditions:S(import or export registration certificate for pesticides). MFN tariff:6.5%. General tariff:20.0%

Frequently Asked Questions

What is the CAS number of Butafenacil?

The CAS number of Butafenacil is 134605-64-4.

What are the molecular formula and molecular weight of Butafenacil?

Butafenacil has molecular formula C20H18ClF3N2O6 and molecular weight 474.815 g/mol.

Is Butafenacil hazardous?

Butafenacil has GHS signal word Warning and hazard statements H400 — Very toxic to aquatic life.

Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.

Last updated:

How to cite: Jingsj. "Butafenacil (CAS 134605-64-4)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-48545-6 (accessed 2026-11-06).

Data for reference only; verify product details with suppliers before purchase.