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Herbicides

Lactofen

Also known as Cobra, Cobra herbicide, PPG 844

CAS 77501-63-4Formula C19H15ClF3NO7Molar mass 461.78 g/molEC 616-466-9
GHS signal word: Warning. Pictograms: Harmful or irritant, Hazardous to the environment 8 suppliers listed
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Lactofen chemical structure, C19H15ClF3NO7, CAS 77501-63-4
2D chemical structure

Key facts

What buyers check first

All properties
Appearance
Dark brown to tan
Melting point
44 to 46
Density
1.391 at 25 °C
Solubility
In water, 0.1 mg/L at 25 °C
HS code
291899
Category
Herbicides
UN number
UN 3077

What is Lactofen?

Plain description, key identifiers and synonyms

Lactofen is a dark brown to tan solid. Insoluble in water. Used as an herbicide.

Identifiers

Registry numbers, names and line notations, tap to copy

IUPAC name
(1-ethoxy-1-oxopropan-2-yl) 5-[2-chloro-4-(trifluoromethyl)phenoxy]-2-nitrobenzoate
CAS number
77501-63-4 CAS number cross-checkedOther or deprecated CAS: 83513-60-4
EC number
616-466-9
Molecular formula
C19H15ClF3NO7
UNII
L44N8UV47O
MDL number
MFCD01632761
InChIKey
CONWAEURSVPLRM-UHFFFAOYSA-N
InChI
InChI=1S/C19H15ClF3NO7/c1-3-29-17(25)10(2)30-18(26)13-9-12(5-6-15(13)24(27)28)31-16-7-4-11(8-14(16)20)19(21,22)23/h4-10H,3H2,1-2H3
SMILES (canonical and isomeric)
CCOC(=O)C(C)OC(=O)C1=C(C=CC(=C1)OC2=C(C=C(C=C2)C(F)(F)F)Cl)[N+](=O)[O-]

Synonyms

  • Cobra
  • Cobra herbicide
  • PPG 844
  • 1'-(Carboethoxy)ethyl 5-(2-chloro-4-(trifluoromethyl)phenoxy)-2-nitrobenzoate
  • Benzoic acid, 5-(2-chloro-4-(trifluoromethyl)phenoxy)-2-nitro-, 2-ethoxy-1-methyl-2-oxoethyl ester
  • Benzoic acid, 5-[2-chloro-4-(trifluoromethyl)phenoxy]-2-nitro-, 2-ethoxy-1-methyl-2-oxoethyl ester
  • ethyl 2-(5-(2-chloro-4-(trifluoromethyl)phenoxy)-2-nitrobenzoyloxy)propanoate
  • 2-Ethoxy-1-methyl-2-oxoethyl 5-(2-chloro-4-trifluoromethylphenoxy)-2-nitrobenzoate
  • Lactofen (>85%)
  • (1-ethoxy-1-oxopropan-2-yl) 5-[2-chloro-4-(trifluoromethyl)phenoxy]-2-nitrobenzoate
  • Phoenix
  • 5-(2-Chloro-4-(trifluoromethyl)phenoxy)-2-nitrobenzoic acid 2-ethoxy-1-methyl-2-oxoethyl ester
  • C19H15ClF3NO7
  • Lactofen (>85per cent)
  • Phoenix (herbicide)
  • (+-)-2-Ethoxy-1-methyl-2-oxoethyl 5-(2-chloro-4-(trifluoromethyl)phenoxy)-2 nitrobenzoate
  • (2-ethoxy-1-methyl-2-oxo-ethyl) 5-[2-chloro-4-(trifluoromethyl)phenoxy]-2-nitro-benzoate
  • (2-Ethoxy-1-methyl-2-oxoethyl)-5-(2-chloro-4-(trifluoromethyl)phenoxy)-2-nitrobenzoate
  • Lactofen, PESTANAL(R), analytical standard
  • 1'-(Carboethoxy)ethyl 5-(2-chloro-4- (trifluoromethyl)phenoxy)-2-nitrobenzoate
  • 1-(carboethoxy)ethyl 5-[2-chloro-4-(trifluoromethyl)-phenoxy]-2-nitrobenzoate
  • 1-(carboethoxy)ethyl 5-[2-chloro-4-(trifluoromethyl)-phenoxyl]-2-nitrobenzoate
  • 1-(carboethoxy)ethyl 5-[2-chloro-4-(trifluoromethyl)phenoxy]-2-nitrobenzoate
  • 1-Ethoxy-1-oxopropan-2-yl 5-[2-chloro-4-(trifluoromethyl)phenoxy]-2-nitrobenzoate
  • 2-Ethoxy-1-methyl-2-oxoethyl 5-(2-chloro-4- (trifluoromethyl)phenoxy)-2 nitrobenzoate, (+/-)-
Show all 26 synonyms
  • Benzoic acid, 5-(2-chloro-4-(trifluoromethyl)phenoxy)-2- nitro-, 2-ethoxy-1-methyl-2-oxoethyl ester

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
Dark brown to tanexp.
Melting point
44 to 46exp.
Density
1.391 at 25 °Cexp.
Solubility
In water, 0.1 mg/L at 25 °Cexp.
Vapour pressure
7 × 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
461.78 g/molcalc.
Exact mass
461.0489 Dacalc.
LogP (octanol/water)
5.17calc.
Topological polar surface area
105 Ųcalc.
Hydrogen bond donors
0calc.
Hydrogen bond acceptors
7calc.
Rotatable bonds
7calc.
Heavy atoms
31calc.
Rings
2calc.
Aromatic rings
2calc.
Fraction sp3 carbons
0.26calc.
Formal charge
0calc.
Stereocentres
1calc.
Lipinski rule of five
Passes (1 violation)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, c1ccc(Oc2ccccc2)cc1

c1ccc(Oc2ccccc2)cc1

2 rings, 13 atoms, the Diphenyl ether ring system.

9,579 other chemicals share this scaffold

Safety and hazards

GHS classification summary, not a safety data sheet

GHS signal word
Warning
GHS07: Harmful or irritant
Harmful or irritant
GHS09: Hazardous to the environment
Hazardous to the environment

Hazard statements

  • H302Harmful if swallowed.
  • H312Harmful in contact with skin.
  • H400Very toxic to aquatic life.
  • H410Very toxic to aquatic life with long lasting effects.
  • H411Toxic to aquatic life with long lasting effects.
  • H413May cause long lasting harmful effects to aquatic life.
Precautionary statements (12)
  • P264Wash skin thoroughly after handling.
  • P270Do not eat, drink or smoke when using this product.
  • P273Avoid release to the environment.
  • P280Wear protective gloves, protective clothing, eye protection and face protection.
  • P301 + P317If swallowed: Get medical help.
  • P302 + P352If on skin: Wash with plenty of water.
  • P317Get medical help.
  • P321Specific treatment (see supplemental first aid instructions on the label).
  • P330Rinse mouth.
  • P362 + P364Take off contaminated clothing. And wash it before reuse.
  • 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

Lactofen suppliers

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

All 8 suppliers
8 of 8 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

8 suppliers in 3 countries

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Lactofen price

Indicative price range per kg from live supplier offers

No published prices right now

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Uses and applications

What the substance is used for, by industry and function

Lactofen is registered for use as an herbicide on snap beans, soybeans, cotton, kenaf, and forestry (non-food use) for both pre- and post-emergent control of broad leaf weeds. Lactofen is not registered for residential use. Although not currently registered, the proposed new food uses of lactofen on peanuts and cotton were included in the risk assessment to support the establishment of new tolerances for these two crops. Lactofen is sold in the United States under the trade names Cobra and Stellar. Lactofen is formulated as technical, manufacturing use product, and emulsifiable concentrate.

Lactofen is not registered for use in residential settings.

Herbicide.

Pharmacological actions

  • Herbicides

Functional uses

  • Biocide

How it is made

Lactofen is produced by reaction of 2-chloro-4-trifluoromethylphenolate with ethyl 2-nitro-5-chlorobenzoyllactate.

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 Lactofen is traded under.

HS 2918.99Indicative HS code

Carboxylic acids, with additional oxygen function (not alcohol, phenol, aldehyde or ketone)…

World exports in 2024
$1.46B
−1.1% vs 2023, imports $1.54B
2019 to 2024
Top exporters
  1. China40.0%
  2. India * partner reported26.6%
  3. Germany8.0%
Top importers
  1. United States25.6%
  2. Brazil6.7%
  3. Argentina5.9%

* Partner reported figures, a lower bound.

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

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

Frequently asked questions

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

What is Lactofen?

Lactofen is a dark brown to tan solid. Insoluble in water. Used as an herbicide.

What is the CAS number of Lactofen?

The CAS registry number of Lactofen is 77501-63-4. Other or deprecated CAS numbers: 83513-60-4.

What is the molecular formula and weight of Lactofen?

The molecular formula of Lactofen is C19H15ClF3NO7 and its molar mass is 461.78 g/mol.

What is Lactofen used for?

Lactofen is registered for use as an herbicide on snap beans, soybeans, cotton, kenaf, and forestry (non-food use) for both pre- and post-emergent control of broad leaf weeds. Lactofen is not registered for residential use.

Is Lactofen hazardous?

Lactofen carries the GHS signal word "Warning". Main hazards: harmful if swallowed, harmful in contact with skin, very toxic to aquatic life. This summary is not an SDS, always read the supplier safety data sheet.

What is the HS code of Lactofen?

Lactofen is usually classified under HS code 291899 (Carboxylic acids with additional oxygen function and their anhydrides, halides…). This is indicative, confirm it with your customs broker before shipping.

Where can I buy Lactofen?

CompoundList lists 8 suppliers of Lactofen in China, United States and Switzerland. Send one free request to get and compare quotes. Your contact details stay private until you accept a quote.

What is the price of Lactofen?

Suppliers quote Lactofen 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 Lactofen

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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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