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Heterocyclic compounds

Azetidine

Also known as Azacyclobutane, Trimethylenimine, 1,3-Propylenimine

CAS 503-29-7Formula C3H7NMolar mass 57.10 g/molEC 207-963-8
GHS signal word: Danger. Pictograms: Flammable, Corrosive 27 suppliers listed
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Azetidine chemical structure, C3H7N, CAS 503-29-7
2D chemical structure

Key facts

What buyers check first

All properties
CAS number
503-29-7
Formula
C3H7N
Molar mass
57.10 g/mol
Physical form
Liquid
HS code
293399
Category
Heterocyclic compounds
Illustrative photo, 200 litre blue HDPE drums of liquid in a warehouse
Typical packagingIllustrative packaging image, not the actual product

What is Azetidine?

Plain description, key identifiers and synonyms

Azetidine is a saturated organic heteromonocyclic parent, an azacycloalkane and a member of azetidines.

Identifiers

Registry numbers, names and line notations, tap to copy

IUPAC name
azetidine
CAS number
503-29-7 CAS number cross-checked
EC number
207-963-8
Molecular formula
C3H7N
UNII
37S883XDWR
MDL number
MFCD00005165
InChIKey
HONIICLYMWZJFZ-UHFFFAOYSA-N
InChI
InChI=1S/C3H7N/c1-2-4-3-1/h4H,1-3H2
SMILES (canonical and isomeric)
C1CNC1

Synonyms

  • Azacyclobutane
  • Trimethylenimine
  • 1,3-Propylenimine
  • Trimethylene imine
  • Azetidine, L-
  • Acetidine
  • Trimethyleneimine
  • Azete, tetrahydro-
  • Azetidine, 98%
  • Azetidin
  • NIOSH/CM4290000
  • BB 02547

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

Physical form
Liquidexp.

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
57.10 g/molcalc.
Exact mass
57.0578 Dacalc.
LogP (octanol/water)
-0.02calc.
Topological polar surface area
12.03 Ųcalc.
Hydrogen bond donors
1calc.
Hydrogen bond acceptors
1calc.
Rotatable bonds
0calc.
Heavy atoms
4calc.
Rings
1calc.
Aromatic rings
0calc.
Fraction sp3 carbons
1calc.
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, C1CNC1

C1CNC1

1 ring, 4 atoms. This chemical is the scaffold itself.

7,873 other chemicals share this scaffold

Safety and hazards

GHS classification summary, not a safety data sheet

GHS signal word
Danger
GHS02: Flammable
Flammable
GHS05: Corrosive
Corrosive

Hazard statements

  • H225Highly flammable liquid and vapour.
  • H314Causes severe skin burns and eye damage.
Precautionary statements (21)
  • P210Keep away from heat, hot surfaces, sparks, open flames and other ignition sources. No smoking.
  • P233Keep container tightly closed.
  • P240Ground and bond container and receiving equipment.
  • P241Use explosion-proof electrical, ventilating and lighting equipment.
  • P242Use non-sparking tools.
  • P243Take action to prevent static discharges.
  • P260Do not breathe dust, fume, gas, mist, vapours or spray.
  • P264Wash skin thoroughly after handling.
  • P280Wear protective gloves, protective clothing, eye protection and face protection.
  • P301 + P330 + P331If swallowed: Rinse mouth. Do not induce vomiting.
  • P302 + P361 + P354If on skin: Take off immediately all contaminated clothing. Immediately rinse with water for several minutes.
  • P303 + P361 + P353If on skin (or hair): Take off immediately all contaminated clothing. Rinse skin with water or shower.
  • 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.
  • P321Specific treatment (see supplemental first aid instructions on the label).
  • P363Wash contaminated clothing before reuse.
  • P370 + P378In case of fire: Use appropriate media to extinguish.
  • P403 + P235Store in a well-ventilated place. Keep cool.
  • 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

Azetidine suppliers

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

All 27 suppliers
27 of 27 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

27 suppliers in 7 countries

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Azetidine 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

Applications are not documented for this substance yet. Suppliers often describe uses on their product pages, linked in the suppliers list above.

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 Azetidine is traded under.

HS 2933.99Indicative HS code

Heterocyclic compounds with nitrogen hetero-atom(s) only, other

World exports in 2024
$12.1B
−31.0% vs 2023, imports $28.8B
2019 to 2024
Top exporters
  1. China30.5%
  2. India * partner reported16.3%
  3. Ireland9.0%
Top importers
  1. Slovenia31.7%
  2. Italy24.2%
  3. United States5.0%

* Partner reported figures, a lower bound.

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

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

Frequently asked questions

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

What is Azetidine?

Azetidine is a saturated organic heteromonocyclic parent, an azacycloalkane and a member of azetidines.

What is the CAS number of Azetidine?

The CAS registry number of Azetidine is 503-29-7.

What is the molecular formula and weight of Azetidine?

The molecular formula of Azetidine is C3H7N and its molar mass is 57.10 g/mol.

Is Azetidine hazardous?

Azetidine carries the GHS signal word "Danger". Main hazards: highly flammable liquid and vapour, causes severe skin burns and eye damage. This summary is not an SDS, always read the supplier safety data sheet.

What is the HS code of Azetidine?

Azetidine is usually classified under HS code 293399 (Heterocyclic compounds with nitrogen hetero-atom(s) only, other). This is indicative, confirm it with your customs broker before shipping.

Where can I buy Azetidine?

CompoundList lists 27 suppliers of Azetidine in China, United States, Canada, Germany and 3 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 Azetidine?

Suppliers quote Azetidine 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 Azetidine

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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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