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Insecticides and acaricides

Pyraclofos

Also known as Boltage, Voltage, O-[1-(4-chlorophenyl)-1H-pyrazol-4-yl] O-ethyl S-propyl phosphorothioate

CAS 89784-60-1Formula C14H18ClN2O3PSMolar mass 360.80 g/molEC 618-301-6
GHS signal word: Danger. Pictograms: Acute toxicity (severe)
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Pyraclofos chemical structure, C14H18ClN2O3PS, CAS 89784-60-1
2D chemical structure

Key facts

What buyers check first

All properties
CAS number
89784-60-1
Formula
C14H18ClN2O3PS
Molar mass
360.80 g/mol
EC number
618-301-6
HS code
293319
Category
Insecticides and acaricides

What is Pyraclofos?

Plain description, key identifiers and synonyms

Pyraclofos is an organochlorine insecticide, an organothiophosphate insecticide, a member of pyrazoles, an organosulfur compound, an organic thiophosphate and a member of monochlorobenzenes. It has a role as an agrochemical and an EC 3.1.1.7 (acetylcholinesterase) inhibitor.

Identifiers

Registry numbers, names and line notations, tap to copy

IUPAC name
1-(4-chlorophenyl)-4-[ethoxy(propylsulfanyl)phosphoryl]oxypyrazole
CAS number
89784-60-1 CAS number cross-checkedOther or deprecated CAS: 77458-01-6
EC numbers
618-301-6, 623-723-9
Molecular formula
C14H18ClN2O3PS
UNII
M0W5LEC929
InChIKey
QHGVXILFMXYDRS-UHFFFAOYSA-N
InChI
InChI=1S/C14H18ClN2O3PS/c1-3-9-22-21(18,19-4-2)20-14-10-16-17(11-14)13-7-5-12(15)6-8-13/h5-8,10-11H,3-4,9H2,1-2H3
SMILES (canonical and isomeric)
CCCSP(=O)(OCC)OC1=CN(N=C1)C2=CC=C(C=C2)Cl

Synonyms

  • Boltage
  • Voltage
  • O-[1-(4-chlorophenyl)-1H-pyrazol-4-yl] O-ethyl S-propyl phosphorothioate
  • Phosphorothioic acid, O-(1-(4-chlorophenyl)-1H-pyrazol-4-yl) O-ethyl S-propyl ester
  • O-(1-(4-Chlorophenyl)-1H-pyrazol-4-yl) O-ethyl S-propyl phosphorothioate
  • Phosphorothioic acid, O-[1-(4-chlorophenyl)-1H-pyrazol-4-yl] O-ethyl S-propyl ester
  • O-(1-(4-chlorophenyl)-4-pyrazolyl) O-ethyl S-propyl phosphorothioate
  • 1-(4-chlorophenyl)-4-[ethoxy(propylsulfanyl)phosphoryl]oxypyrazole
  • starlet
  • Pyraclofos-d7
  • O-[1-(4-chlorophenyl)-1H-pyrazol-4-yl] O-ethyl S-propyl thiophosphate
  • TIA 230
  • (RS)-O-1-(4-Chlorophenyl)pyrazol-4-yl O-ethyl S-propyl phosphorothioate
  • (+-)-O-(1-(4-Chlorophenyl)-1H-pyrazol-4-yl) O-ethyl S-propyl phosphorothioate
  • (RS)-(O-1-(4-Chlorophenyl)pyrazol-4-yl-O-ethyl-S-propylphosphorothioate) (IUPAC)
  • Phosphorothioic acid, O-(1-(4-chlorophenyl)-1H-pyrazol-4-yl) O-ethyl S-propyl ester, (+-)-
  • Qhgvxilfmxydrs-uhfffaoysa-
  • 1-(4-chlorophenyl)-4-(ethoxy-propylsulfanylphosphoryl)oxypyrazole
  • Pyraclofos 10 |Ig/mL in Cyclohexane
  • Pyraclofos 10 microg/mL in Cyclohexane
  • 1-(4-Chlorophenyl)-4-(ethoxy-propylsulfanyl-phosphoryl)oxy-pyrazole
  • (rs)-(O-1-(4-Chlorophenyl)pyrazol-4-yl o-ethyl S-propyl phosphorothioate)
  • Thiophosphoric acid, O-[1-(4-chlorophenyl)-1H-pyrazol-4-yl] ester, O,-ethyl ester, S-propyl 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

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
360.80 g/molcalc.
Exact mass
360.0464 Dacalc.
LogP (octanol/water)
5.19calc.
Topological polar surface area
53.35 Ųcalc.
Hydrogen bond donors
0calc.
Hydrogen bond acceptors
5calc.
Rotatable bonds
8calc.
Heavy atoms
22calc.
Rings
2calc.
Aromatic rings
2calc.
Fraction sp3 carbons
0.36calc.
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(-n2cccn2)cc1

c1ccc(-n2cccn2)cc1

2 rings, 11 atoms, the 1-Phenylpyrazole ring system.

8,634 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

  • H301Toxic if swallowed.
Precautionary statements (7)
  • P264Wash skin thoroughly after handling.
  • P270Do not eat, drink or smoke when using this product.
  • P301 + P316If swallowed: Get emergency medical help immediately.
  • P321Specific treatment (see supplemental first aid instructions on the label).
  • P330Rinse mouth.
  • 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

Pyraclofos suppliers

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Pyraclofos price

Indicative price range per kg from live supplier offers

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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

Pharmacological actions

  • Insecticides

Roles

  • agrochemical
  • enzyme inhibitor

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 Pyraclofos is traded under.

HS 2933.19Indicative HS code

Compounds containing an unfused pyrazole ring (whether or not hydrogenated) in the…

World exports in 2024
$3.44B
−22.6% vs 2023, imports $6.66B
2019 to 2024
Top exporters
  1. China21.6%
  2. Switzerland * partner reported20.5%
  3. Germany19.0%
Top importers
  1. Slovenia38.4%
  2. Portugal14.1%
  3. Brazil13.0%

* Partner reported figures, a lower bound.

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

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

Frequently asked questions

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

What is Pyraclofos?

Pyraclofos is an organochlorine insecticide, an organothiophosphate insecticide, a member of pyrazoles, an organosulfur compound, an organic thiophosphate and a member of monochlorobenzenes. It has a role as an agrochemical and an EC 3.1.1.7 (acetylcholinesterase) inhibitor.

What is the CAS number of Pyraclofos?

The CAS registry number of Pyraclofos is 89784-60-1. Other or deprecated CAS numbers: 77458-01-6.

What is the molecular formula and weight of Pyraclofos?

The molecular formula of Pyraclofos is C14H18ClN2O3PS and its molar mass is 360.80 g/mol.

What is Pyraclofos used for?

Known uses and roles of Pyraclofos include insecticides in agriculture and crop protection, agrochemical, enzyme inhibitor and insecticides.

Is Pyraclofos hazardous?

Pyraclofos carries the GHS signal word "Danger". Main hazards: toxic if swallowed. This summary is not an SDS, always read the supplier safety data sheet.

What is the HS code of Pyraclofos?

Pyraclofos is usually classified under HS code 293319 (Compounds containing an unfused pyrazole ring (whether or not hydrogenated) in the…). This is indicative, confirm it with your customs broker before shipping.

Where can I buy Pyraclofos?

Post a free request on CompoundList and suppliers of Pyraclofos will send you quotes. Your contact details stay private until you accept a quote.

What is the price of Pyraclofos?

Suppliers quote Pyraclofos 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 Pyraclofos

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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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