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Aldehydes and ketones

1-Naphthaldehyde

Also known as naphthalene-1-carbaldehyde, 1-Formylnaphthalene, alpha-Naphthaldehyde

CAS 66-77-3Formula C11H8OMolar mass 156.18 g/molEC 200-633-4
GHS signal word: Danger. Pictograms: Corrosive, Acute toxicity (severe), Harmful or irritant 26 suppliers listed
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1-Naphthaldehyde chemical structure, C11H8O, CAS 66-77-3
2D chemical structure

Key facts

What buyers check first

All properties
CAS number
66-77-3
Formula
C11H8O
Molar mass
156.18 g/mol
EC number
200-633-4
HS code
291229
Category
Aldehydes and ketones

What is 1-Naphthaldehyde?

Plain description, key identifiers and synonyms

1-naphthaldehyde is a naphthaldehyde with a formyl group at position 1. It has a role as a mouse metabolite.

Identifiers

Registry numbers, names and line notations, tap to copy

IUPAC name
naphthalene-1-carbaldehyde
CAS number
66-77-3 CAS number cross-checkedOther or deprecated CAS: 30678-61-6
EC number
200-633-4
Molecular formula
C11H8O
UNII
H3I0B5F8SX
MDL number
MFCD00004003
InChIKey
SQAINHDHICKHLX-UHFFFAOYSA-N
InChI
InChI=1S/C11H8O/c12-8-10-6-3-5-9-4-1-2-7-11(9)10/h1-8H
SMILES (canonical and isomeric)
C1=CC=C2C(=C1)C=CC=C2C=O

Synonyms

  • naphthalene-1-carbaldehyde
  • 1-Formylnaphthalene
  • alpha-Naphthaldehyde
  • 1-Naphthylaldehyde
  • alpha-Naphthal
  • 1-Naphthalenecarboxaldehyde
  • alpha-Naphthylcarboxaldehyde
  • alpha-Naphthylaldehyde
  • Naphthaldehyde
  • naphthalene-1-aldehyde
  • I-Napthaldehyde
  • 1-naphtaldehyde
  • 1-naphthylcarboxaldehyde
  • 1-Naphthoaldehyde
  • Naphthalenecarboxaldehyde
  • alphaalpha-naphthaldehyde
  • naphthalene-1 carbaldehyde
  • Naphthalene-1-carboxaldehyde
  • alpha-naphthoaldehyde
  • naphthalenecarbaldehyde
  • 1-Formylnaphthalene, 1-Naphthylaldehyde, 1-Naphthylcarboxaldehyde
  • 1-Napthaldehyde
  • 1-naphthalenecarbaldehyde
  • Naphthaldehdye
  • 1naphthaldehyde
Show all 33 synonyms
  • formylnaphthalene
  • 4-Naphthalene-1-carboxaldehyde
  • a-Naphthal
  • A-Naphthaldehyde
  • 1-naphtoaldehyde
  • 1-napthylaldehyde
  • 1- Naphthaldehyde
  • 1-naphthyl aldehyde

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
156.18 g/molcalc.
Exact mass
156.0575 Dacalc.
LogP (octanol/water)
2.65calc.
Topological polar surface area
17.07 Ųcalc.
Hydrogen bond donors
0calc.
Hydrogen bond acceptors
1calc.
Rotatable bonds
1calc.
Heavy atoms
12calc.
Rings
2calc.
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, c1ccc2ccccc2c1

c1ccc2ccccc2c1

2 rings, 10 atoms, the Naphthalene ring system.

17,920 other chemicals share this scaffold

Safety and hazards

GHS classification summary, not a safety data sheet

GHS signal word
Danger
GHS05: Corrosive
Corrosive
GHS06: Acute toxicity (severe)
Acute toxicity (severe)
GHS07: Harmful or irritant
Harmful or irritant

Hazard statements

  • H290May be corrosive to metals.
  • H301Toxic if swallowed.
  • H302Harmful if swallowed.
  • H312Harmful in contact with skin.
  • H314Causes severe skin burns and eye damage.
  • H315Causes skin irritation.
  • H318Causes serious eye damage.
  • H412Harmful to aquatic life with long lasting effects.
Precautionary statements (25)
  • P234Keep only in original packaging.
  • P260Do not breathe dust, fume, gas, mist, vapours or spray.
  • P264Wash skin thoroughly after handling.
  • P264 + P265Wash skin thoroughly after handling. Do not touch eyes.
  • 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 + P316If swallowed: Get emergency medical help immediately.
  • P301 + P317If swallowed: Get medical help.
  • P301 + P330 + P331If swallowed: Rinse mouth. Do not induce vomiting.
  • P302 + P352If on skin: Wash with plenty of water.
  • P302 + P361 + P354If on skin: Take off immediately all contaminated clothing. Immediately rinse with water for several minutes.
  • P304 + P340If inhaled: Remove person to fresh air and keep comfortable for breathing.
  • P305 + P354 + P338If in eyes: Immediately rinse with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing.
  • P316Get emergency medical help immediately.
  • P317Get medical help.
  • P321Specific treatment (see supplemental first aid instructions on the label).
  • P330Rinse mouth.
  • P332 + P317If skin irritation occurs: Get medical help.
  • P362 + P364Take off contaminated clothing. And wash it before reuse.
  • P363Wash contaminated clothing before reuse.
  • P390Absorb spillage to prevent material damage.
  • P405Store locked up.
  • P406Store in a corrosion resistant container with a resistant inner liner.
  • 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

1-Naphthaldehyde suppliers

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

All 26 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

26 suppliers in 8 countries

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1-Naphthaldehyde 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

Use classes: Pesticide transformation products.

Roles

  • animal metabolite
  • eukaryotic metabolite
  • mammalian metabolite
  • metabolite
  • mouse metabolite

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 1-Naphthaldehyde is traded under.

HS 2912.29Indicative HS code

Cyclic aldehydes without other oxygen function, other

World exports in 2024
$435M
+19.0% vs 2023, imports $484M
2019 to 2024
Top exporters
  1. China19.5%
  2. Japan17.4%
  3. India * partner reported13.0%
Top importers
  1. United States22.5%
  2. China9.2%
  3. Singapore8.4%

* Partner reported figures, a lower bound.

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

The HS code shown for 1-Naphthaldehyde is indicative (it was assigned by structure rules). Confirm the classification with your customs broker before shipping.

Frequently asked questions

Quick answers about 1-Naphthaldehyde, based on the data on this page

What is 1-Naphthaldehyde?

1-naphthaldehyde is a naphthaldehyde with a formyl group at position 1. It has a role as a mouse metabolite.

What is the CAS number of 1-Naphthaldehyde?

The CAS registry number of 1-Naphthaldehyde is 66-77-3. Other or deprecated CAS numbers: 30678-61-6.

What is the molecular formula and weight of 1-Naphthaldehyde?

The molecular formula of 1-Naphthaldehyde is C11H8O and its molar mass is 156.18 g/mol.

What is 1-Naphthaldehyde used for?

Use classes: Pesticide transformation products.

Is 1-Naphthaldehyde hazardous?

1-Naphthaldehyde carries the GHS signal word "Danger". Main hazards: may be corrosive to metals, toxic if swallowed, harmful if swallowed. This summary is not an SDS, always read the supplier safety data sheet.

What is the HS code of 1-Naphthaldehyde?

1-Naphthaldehyde is usually classified under HS code 291229 (Cyclic aldehydes without other oxygen function, other). This is indicative, confirm it with your customs broker before shipping.

Where can I buy 1-Naphthaldehyde?

CompoundList lists 26 suppliers of 1-Naphthaldehyde in China, India, United States, Canada and 4 more. Send one free request to get and compare quotes. Your contact details stay private until you accept a quote.

Where can I buy 1-Naphthaldehyde in India?

3 suppliers in India list 1-Naphthaldehyde on CompoundList. Filter the suppliers list by country and send a request to compare prices, grades and delivery times.

What is the price of 1-Naphthaldehyde?

Suppliers quote 1-Naphthaldehyde 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 1-Naphthaldehyde

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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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