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Heterocyclic building blocks

Thiomorpholine

Also known as Thiamorpholine, Parathiazan, Thiazolidinane

CAS 123-90-0Formula C4H9NSMolar mass 103.19 g/molEC 204-660-2
GHS signal word: Danger. Pictograms: Corrosive 19 suppliers listed
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Thiomorpholine chemical structure, C4H9NS, CAS 123-90-0
2D chemical structure

Key facts

What buyers check first

All properties
CAS number
123-90-0
Formula
C4H9NS
Molar mass
103.19 g/mol
EC number
204-660-2
HS code
293499
Category
Heterocyclic building blocks

What is Thiomorpholine?

Plain description, key identifiers and synonyms

Thiomorpholine is a saturated organic heteromonocyclic parent that is an analogue of morpholine where the oxygen atom is replaced by sulfur. It is a saturated organic heteromonocyclic parent and a member of thiomorpholines.

Identifiers

Registry numbers, names and line notations, tap to copy

IUPAC name
thiomorpholine
CAS number
123-90-0 CAS number cross-checked
EC number
204-660-2
Molecular formula
C4H9NS
UNII
3A8R61G6QV
MDL number
MFCD00005974, MFCD03458715
InChIKey
BRNULMACUQOKMR-UHFFFAOYSA-N
InChI
InChI=1S/C4H9NS/c1-3-6-4-2-5-1/h5H,1-4H2
SMILES (canonical and isomeric)
C1CSCCN1

Synonyms

  • Thiamorpholine
  • Parathiazan
  • Thiazolidinane
  • 1,4-Thiazan
  • Tetrahydro-1,4-thiazine
  • 1,4-Thiazane
  • 1-Thia-4-azacyclohexane
  • 1,4-Thiazine, tetrahydro-
  • tetrahydro-4h-1,4-thiazine
  • 1,4-thiazaperhydroine
  • Tetrahydro-2H-1,4-thiazine
  • thiomopholine
  • thiomorphline
  • thio-morpholine
  • Thiomorpholine, 98%
  • Thiomorpholine, purum, >=97.0% (GC)

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
103.19 g/molcalc.
Exact mass
103.0456 Dacalc.
LogP (octanol/water)
0.32calc.
Topological polar surface area
12.03 Ųcalc.
Hydrogen bond donors
1calc.
Hydrogen bond acceptors
2calc.
Rotatable bonds
0calc.
Heavy atoms
6calc.
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, C1CSCCN1

C1CSCCN1

1 ring, 6 atoms. This chemical is the scaffold itself.

604 other chemicals share this scaffold

Safety and hazards

GHS classification summary, not a safety data sheet

GHS signal word
Danger
GHS05: Corrosive
Corrosive

Hazard statements

  • H314Causes severe skin burns and eye damage.
Precautionary statements (12)
  • 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.
  • 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.
  • 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

Thiomorpholine suppliers

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

All 19 suppliers
19 of 19 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

19 suppliers in 5 countries

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Thiomorpholine 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

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 Thiomorpholine 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 Thiomorpholine is indicative (it was assigned by structure rules). Confirm the classification with your customs broker before shipping.

Frequently asked questions

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

What is Thiomorpholine?

Thiomorpholine is a saturated organic heteromonocyclic parent that is an analogue of morpholine where the oxygen atom is replaced by sulfur. It is a saturated organic heteromonocyclic parent and a member of thiomorpholines.

What is the CAS number of Thiomorpholine?

The CAS registry number of Thiomorpholine is 123-90-0.

What is the molecular formula and weight of Thiomorpholine?

The molecular formula of Thiomorpholine is C4H9NS and its molar mass is 103.19 g/mol.

What is Thiomorpholine used for?

Known uses and roles of Thiomorpholine include building blocks in research and laboratory and screening compounds in research and laboratory.

Is Thiomorpholine hazardous?

Thiomorpholine carries the GHS signal word "Danger". Main hazards: 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 Thiomorpholine?

Thiomorpholine 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 Thiomorpholine?

CompoundList lists 19 suppliers of Thiomorpholine in China, United States, Canada, Hong Kong and 1 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 Thiomorpholine?

Suppliers quote Thiomorpholine 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 Thiomorpholine

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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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