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Antibiotics and anti-infectives

Naftalofos

Also known as Naphthalophos, Maretin, Phtalophos

CAS 1491-41-4Formula C16H16NO6PMolar mass 349.28 g/molEC 216-078-6
GHS signal word: Danger. Pictograms: Acute toxicity (severe) 1 supplier listed
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Naftalofos chemical structure, C16H16NO6P, CAS 1491-41-4
2D chemical structure

Key facts

What buyers check first

All properties
CAS number
1491-41-4
Formula
C16H16NO6P
Molar mass
349.28 g/mol
EC number
216-078-6
HS code
292519
Category
Antibiotics and anti-infectives

What is Naftalofos?

Plain description, key identifiers and synonyms

Naftalofos is an organic heterotricyclic compound. It has a role as an anthelminthic drug.

Identifiers

Registry numbers, names and line notations, tap to copy

IUPAC name
(1,3-dioxobenzo[de]isoquinolin-2-yl) diethyl phosphate
CAS number
1491-41-4 CAS number cross-checked
EC number
216-078-6
Molecular formula
C16H16NO6P
UNII
H5IT2P8H5I
InChIKey
QNSIFYWAPWSAIJ-UHFFFAOYSA-N
InChI
InChI=1S/C16H16NO6P/c1-3-21-24(20,22-4-2)23-17-15(18)12-9-5-7-11-8-6-10-13(14(11)12)16(17)19/h5-10H,3-4H2,1-2H3
SMILES (canonical and isomeric)
CCOP(=O)(OCC)ON1C(=O)C2=CC=CC3=C2C(=CC=C3)C1=O

Synonyms

  • Naphthalophos
  • Maretin
  • Phtalophos
  • Rametin
  • Bayer 25820
  • N-Hydroxynaphthalimide diethyl phosphate
  • Naftalofosum
  • BAY 9002
  • O,O-Diethyl N-hydroxynaphthalimide phosphate
  • ENT 25567
  • 1H-Benz(de)isoquinoline-1,3(2H)-dione, 2-((diethoxyphosphinyl)oxy)-
  • 1H-Benz[de]isoquinoline-1,3(2H)-dione, 2-[(diethoxyphosphinyl)oxy]-
  • 2-[(Diethoxyphosphoryl)oxy]-1H-benzo[de]isoquinoline-1,3(2H)-dione
  • 2-((diethoxyphosphoryl)oxy)-1H-benzo(de)isoquinoline-1,3(2H)-dione
  • Rawetin
  • Bayer 9002
  • Chemagro B-9002
  • Bayer S940
  • ENT 25,567
  • N-Hydroxynaphthylimide diethyl phosphate
  • Bayer S-940
  • Naphthalimide, N-hydroxy-, diethyl phosphate
  • (1,3-dioxobenzo[de]isoquinolin-2-yl) diethyl phosphate
  • Phosphoric acid, diethyl ester, naphthalimido deriv.
  • Phosphoric acid, diethyl ester, N-naphthalimide deriv.
Show all 33 synonyms
  • 1,3-dioxo-1H-benzo[de]isoquinolin-2(3H)-yl diethyl phosphate
  • 2-[(Diethoxyphosphinyl)oxy]-1H-benz[de]isoquinoline-1,3(2H)-dione
  • Phtalophos (VAN)
  • N-Hydroxynaphthalimide diethylphosphate
  • 2-((Diethoxyphosphinyl)oxy)-1H-benz(de)isoquinoline-1,3(2H)-dione
  • Maretin (TN)
  • N-(Diethoxyphosphinoyloxy)-1,8-naphthalindicarboximid
  • Naftalofos (USAN/INN)

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
349.28 g/molcalc.
Exact mass
349.0715 Dacalc.
LogP (octanol/water)
3.55calc.
Topological polar surface area
82.14 Ųcalc.
Hydrogen bond donors
0calc.
Hydrogen bond acceptors
6calc.
Rotatable bonds
6calc.
Heavy atoms
24calc.
Rings
3calc.
Aromatic rings
2calc.
Fraction sp3 carbons
0.25calc.
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=C1NC(=O)c2cccc3cccc1c23

O=C1NC(=O)c2cccc3cccc1c23

3 rings, 15 atoms, the Naphthalimide ring system.

306 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.
  • H310Fatal in contact with skin.
Precautionary statements (12)
  • 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.
  • P301 + P316If swallowed: Get emergency medical help immediately.
  • P302 + P352If on skin: Wash with plenty of water.
  • P316Get emergency medical help immediately.
  • P321Specific treatment (see supplemental first aid instructions on the label).
  • P330Rinse mouth.
  • 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

Naftalofos suppliers

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Where suppliers are based

1 supplier in 1 country

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Naftalofos 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

  • anthelminthic drug
  • antiinfective agent
  • antiparasitic agent
  • pharmaceutical

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 Naftalofos is traded under.

HS 2925.19Indicative HS code

Imides and their derivatives, salts thereof, other

World exports in 2024
$295M
+11.7% vs 2023, imports $348M
2019 to 2024
Top exporters
  1. China29.7%
  2. Japan22.7%
  3. United Kingdom10.0%
Top importers
  1. United States12.7%
  2. Brazil12.6%
  3. China10.5%
Reported customs values in USD, not prices.Full trade data

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

Frequently asked questions

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

What is Naftalofos?

Naftalofos is an organic heterotricyclic compound. It has a role as an anthelminthic drug.

What is the CAS number of Naftalofos?

The CAS registry number of Naftalofos is 1491-41-4.

What is the molecular formula and weight of Naftalofos?

The molecular formula of Naftalofos is C16H16NO6P and its molar mass is 349.28 g/mol.

What is Naftalofos used for?

Known uses and roles of Naftalofos include anthelminthic drug, antiinfective agent, antiparasitic agent and pharmaceutical.

Is Naftalofos hazardous?

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

What is the HS code of Naftalofos?

Naftalofos is usually classified under HS code 292519 (Imides and their derivatives, salts thereof, other). This is indicative, confirm it with your customs broker before shipping.

Where can I buy Naftalofos?

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

What is the price of Naftalofos?

Suppliers quote Naftalofos 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 Naftalofos

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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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