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Impurities and reference standards

N-Formylmorpholine

Also known as 4-Formylmorpholine, 4-Morpholinecarboxaldehyde, Morpholine, 4-formyl-

CAS 4394-85-8Formula C5H9NO2Molar mass 115.13 g/molEC 224-518-3
GHS signal word: Warning. Pictograms: Harmful or irritant 14 suppliers listed
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N-Formylmorpholine chemical structure, C5H9NO2, CAS 4394-85-8
2D chemical structure

Key facts

What buyers check first

All properties
CAS number
4394-85-8
Formula
C5H9NO2
Molar mass
115.13 g/mol
Physical form
Liquid
HS code
293499
Category
Impurities and reference standards
Illustrative photo, 200 litre blue HDPE drums of liquid in a warehouse
Typical packagingIllustrative packaging image, not the actual product

What is N-Formylmorpholine?

Plain description, key identifiers and synonyms

N-Formylmorpholine is a chemical substance with the molecular formula C5H9NO2 and a molar mass of 115.13 g/mol. Its CAS registry number is 4394-85-8. The IUPAC name is morpholine-4-carbaldehyde.

Identifiers

Registry numbers, names and line notations, tap to copy

IUPAC name
morpholine-4-carbaldehyde
CAS number
4394-85-8 CAS number cross-checked
EC number
224-518-3
Molecular formula
C5H9NO2
UNII
D1E63XO4RH
MDL number
MFCD00006170
INCI name
FORMYL MORPHOLINE
InChIKey
LCEDQNDDFOCWGG-UHFFFAOYSA-N
InChI
InChI=1S/C5H9NO2/c7-5-6-1-3-8-4-2-6/h5H,1-4H2
SMILES (canonical and isomeric)
C1COCCN1C=O

Synonyms

  • 4-Formylmorpholine
  • 4-Morpholinecarboxaldehyde
  • Morpholine, 4-formyl-
  • morpholine-4-carbaldehyde
  • N-Formylmorfolin
  • 4-Morpholinecarbaldehyde
  • N-formyl morpholine
  • formyl morpholine
  • N-formyhnorpholine
  • N-Formyl Morpholin
  • (morpholino)methanone
  • morpholin-4-yl-methanone
  • morpholine-4-carboaldehyde
  • 4-Formylmorpholine, 99%
  • 4-Morpholinecarbaldehyde #
  • morpholine-4-carboxaldehyde
  • formylmorpholine
  • 1-formylmorpholine
  • 4-formyl morpholine
  • 4-formyl-morpholine
  • Molsidomine EP Impurity D
  • Molsidomine impurity D CRS
  • N-Morpholinecarboxaldehyde
  • 4-Morpholinecarbaldehyde N-Formylmorpholine
  • 4-morpholinecarbaldehyde, n-formylmorpholine
Show all 26 synonyms
  • Molsidomine impurity D, European Pharmacopoeia (EP) Reference Standard

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
115.13 g/molcalc.
Exact mass
115.0633 Dacalc.
LogP (octanol/water)
-0.52calc.
Topological polar surface area
29.54 Ųcalc.
Hydrogen bond donors
0calc.
Hydrogen bond acceptors
2calc.
Rotatable bonds
1calc.
Heavy atoms
8calc.
Rings
1calc.
Aromatic rings
0calc.
Fraction sp3 carbons
0.8calc.
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, C1COCCN1

C1COCCN1

1 ring, 6 atoms, the Morpholine ring system.

5,994 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

  • H317May cause an allergic skin reaction.
  • H319Causes serious eye irritation.
  • H335May cause respiratory irritation.
Precautionary statements (16)
  • P261Avoid breathing dust, fume, gas, mist, vapours or spray.
  • P264 + P265Wash skin thoroughly after handling. Do not touch eyes.
  • P271Use only outdoors or in a well-ventilated area.
  • P272Contaminated work clothing should not be allowed out of the workplace.
  • P280Wear protective gloves, protective clothing, eye protection and face protection.
  • P302 + P352If on skin: Wash with plenty of water.
  • P304 + P340If inhaled: Remove person to fresh air and keep comfortable for breathing.
  • P305 + P351 + P338If in eyes: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing.
  • P319Get medical help if you feel unwell.
  • P321Specific treatment (see supplemental first aid instructions on the label).
  • P333 + P317If skin irritation or rash occurs: Get medical help.
  • P337 + P317If eye irritation persists: Get medical help.
  • P362 + P364Take off contaminated clothing. And wash it before reuse.
  • P403 + P233Store in a well-ventilated place. Keep container tightly closed.
  • 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

N-Formylmorpholine suppliers

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

All 14 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

14 suppliers in 5 countries

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N-Formylmorpholine price

Indicative price range per kg from live supplier offers

No published prices right now

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Uses and applications

What the substance is used for, by industry and function

Industrial uses: Intermediate, Solvent, Plating agent.

Consumer uses: Viscosity modifiers.

Cosmetic ingredient, INCI name FORMYL MORPHOLINE(solvent)

Functional uses

  • Solvent

Cosmetic functions

  • Solvent

Regulatory status

Inventories, regulations and trade controls that list this substance

Health and food

  • EU cosmetic ingredient inventory

United States

  • TSCA inventory (USA)
    Status: Active in US commerce, Regulatory flags: Added by a premanufacture notice

HS code and trade data

Customs classification and reported world trade statistics

Global trade

World import and export statistics for the HS code N-Formylmorpholine is traded under.

HS 2934.99Indicative HS code

Nucleic acids and their salts, other heterocyclic compounds, not elsewhere classified in heading 2934

World exports in 2024
$26.7B
+15.0% vs 2023, imports $26.3B
2019 to 2024
Top exporters
  1. Ireland26.3%
  2. China15.7%
  3. Singapore10.3%
Top importers
  1. United States24.5%
  2. Germany23.1%
  3. Japan4.5%
Reported customs values in USD, not prices.Full trade data

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

Frequently asked questions

Quick answers about N-Formylmorpholine, based on the data on this page

What is N-Formylmorpholine?

N-Formylmorpholine is a chemical substance with the molecular formula C5H9NO2 and a molar mass of 115.13 g/mol. Its CAS registry number is 4394-85-8. The IUPAC name is morpholine-4-carbaldehyde.

What is the CAS number of N-Formylmorpholine?

The CAS registry number of N-Formylmorpholine is 4394-85-8.

What is the molecular formula and weight of N-Formylmorpholine?

The molecular formula of N-Formylmorpholine is C5H9NO2 and its molar mass is 115.13 g/mol.

What is N-Formylmorpholine used for?

Industrial uses: Intermediate, Solvent, Plating agent. Consumer uses: Viscosity modifiers.

Is N-Formylmorpholine hazardous?

N-Formylmorpholine carries the GHS signal word "Warning". Main hazards: may cause an allergic skin reaction, causes serious eye irritation, may cause respiratory irritation. This summary is not an SDS, always read the supplier safety data sheet.

What is the HS code of N-Formylmorpholine?

N-Formylmorpholine is usually classified under HS code 293499 (Nucleic acids and their salts, whether or not chemically defined, other heterocyclic…). This is indicative, confirm it with your customs broker before shipping.

Where can I buy N-Formylmorpholine?

CompoundList lists 14 suppliers of N-Formylmorpholine in China, India, United States, Germany and 1 more. Send one free request to get and compare quotes. Your contact details stay private until you accept a quote.

Where can I buy N-Formylmorpholine in India?

4 suppliers in India list N-Formylmorpholine on CompoundList. Filter the suppliers list by country and send a request to compare prices, grades and delivery times.

What is the price of N-Formylmorpholine?

Suppliers quote N-Formylmorpholine 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 N-Formylmorpholine

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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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