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Aromatic building blocks

Naphthalimide

Also known as 1,8-Naphthalimide, 1H-Benzo[de]isoquinoline-1,3(2H)-dione, 1,8-Naphthalenedicarboximide

CAS 81-83-4Formula C12H7NO2Molar mass 197.19 g/molEC 201-379-7
GHS signal word: Warning. Pictograms: Harmful or irritant 30 suppliers listed
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Naphthalimide chemical structure, C12H7NO2, CAS 81-83-4
2D chemical structure

Key facts

What buyers check first

All properties
CAS number
81-83-4
Formula
C12H7NO2
Molar mass
197.19 g/mol
EC number
201-379-7
HS code
292519
Category
Aromatic building blocks

What is Naphthalimide?

Plain description, key identifiers and synonyms

Naphthalimide is a chemical substance with the molecular formula C12H7NO2 and a molar mass of 197.19 g/mol. Its CAS registry number is 81-83-4. The IUPAC name is benzo[de]isoquinoline-1,3-dione.

Identifiers

Registry numbers, names and line notations, tap to copy

IUPAC name
benzo[de]isoquinoline-1,3-dione
CAS number
81-83-4 CAS number cross-checked
EC number
201-379-7
Molecular formula
C12H7NO2
UNII
GI0TV19GBN
MDL number
MFCD00006920
InChIKey
XJHABGPPCLHLLV-UHFFFAOYSA-N
InChI
InChI=1S/C12H7NO2/c14-11-8-5-1-3-7-4-2-6-9(10(7)8)12(15)13-11/h1-6H,(H,13,14,15)
SMILES (canonical and isomeric)
C1=CC2=C3C(=C1)C(=O)NC(=O)C3=CC=C2

Synonyms

  • 1,8-Naphthalimide
  • 1H-Benzo[de]isoquinoline-1,3(2H)-dione
  • 1,8-Naphthalenedicarboximide
  • Benzo[de]isoquinoline-1,3-dione
  • 1H-Benz[de]isoquinoline-1,3(2H)-dione
  • Naphthalene-1,8-dicarboximide
  • 1,8-Naphthaleneimide
  • 1H-Benz(de)isoquinoline-1,3(2H)-dione
  • 1H-Benzo(de)isoquinoline-1,3(2H)-dione
  • 1,8-naphthalenedicarboxylic acid imide
  • Benzo(de)isoquinoline-1,3-dione
  • Naphthalimide (8CI)
  • 1,3-dioxo-1H-benz[de]isoquinoline
  • Naphthalimides
  • 3-Azatricyclo[7.3.1.0?,(1)(3)]trideca-1(13),5,7,9,11-pentaene-2,4-dione
  • 3ess
  • 18-Naphthalimide
  • 1,8 naphthalimide
  • 1.8-naphthalimide
  • 1,8-Naphthalimide, 99%
  • Xjhabgppclhllv-uhfffaoysa-
  • 1H-Benzo[de]isoquinoline-1,3(2H)-dione #
  • 2,3-dihydro-1H-benz[de]isoquinoline-1,3-dione
  • 1,8-Naphthalimide Solution in Acetone, 1000ug/mL
  • 3-azatricyclo[7.3.1.0,5,13]trideca-1(13),5,7,9,11-pentaene-2,4-dione

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
197.19 g/molcalc.
Exact mass
197.0477 Dacalc.
LogP (octanol/water)
1.72calc.
Topological polar surface area
46.17 Ųcalc.
Hydrogen bond donors
1calc.
Hydrogen bond acceptors
2calc.
Rotatable bonds
0calc.
Heavy atoms
15calc.
Rings
3calc.
Aromatic rings
2calc.
Fraction sp3 carbons
0calc.
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. This chemical is the scaffold itself.

306 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

Hazard statements

  • H302Harmful if swallowed.
Precautionary statements (5)
  • P264Wash skin thoroughly after handling.
  • P270Do not eat, drink or smoke when using this product.
  • P301 + P317If swallowed: Get medical help.
  • P330Rinse mouth.
  • 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

Naphthalimide suppliers

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

All 30 suppliers
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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

30 suppliers in 9 countries

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Naphthalimide price

Indicative price range per kg from live supplier offers

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Uses and applications

What the substance is used for, by industry and function

Regulatory status

Inventories, regulations and trade controls that list this substance

United States

  • TSCA inventory (USA)
    Status: Active in US commerce

HS code and trade data

Customs classification and reported world trade statistics

Global trade

World import and export statistics for the HS code Naphthalimide 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 Naphthalimide is indicative (it was assigned by structure rules). Confirm the classification with your customs broker before shipping.

Frequently asked questions

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

What is Naphthalimide?

Naphthalimide is a chemical substance with the molecular formula C12H7NO2 and a molar mass of 197.19 g/mol. Its CAS registry number is 81-83-4. The IUPAC name is benzo[de]isoquinoline-1,3-dione.

What is the CAS number of Naphthalimide?

The CAS registry number of Naphthalimide is 81-83-4.

What is the molecular formula and weight of Naphthalimide?

The molecular formula of Naphthalimide is C12H7NO2 and its molar mass is 197.19 g/mol.

What is Naphthalimide used for?

Is Naphthalimide hazardous?

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

What is the HS code of Naphthalimide?

Naphthalimide 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 Naphthalimide?

CompoundList lists 30 suppliers of Naphthalimide in China, United States, Canada, Switzerland and 5 more. Send one free request to get and compare quotes. Your contact details stay private until you accept a quote.

What is the price of Naphthalimide?

Suppliers quote Naphthalimide 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 Naphthalimide

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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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