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Heterocyclic building blocks

2-Ethynylthiolane

Also known as 2-Ethynyltetrahydrothiophene, Thiophene, 2-ethynyltetrahydro-

CAS 84203-70-3Formula C6H8SMolar mass 112.20 g/mol
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2-Ethynylthiolane chemical structure, C6H8S, CAS 84203-70-3
2D chemical structure

Key facts

What buyers check first

All properties
CAS number
84203-70-3
Formula
C6H8S
Molar mass
112.20 g/mol
HS code
293499
Category
Heterocyclic building blocks

What is 2-Ethynylthiolane?

Plain description, key identifiers and synonyms

2-Ethynylthiolane is a chemical substance with the molecular formula C6H8S and a molar mass of 112.20 g/mol. Its CAS registry number is 84203-70-3.

Identifiers

Registry numbers, names and line notations, tap to copy

IUPAC name
2-ethynylthiolane
CAS number
84203-70-3
Molecular formula
C6H8S
InChIKey
WRYKXQRSQDCTCK-UHFFFAOYSA-N
InChI
InChI=1S/C6H8S/c1-2-6-4-3-5-7-6/h1,6H,3-5H2
SMILES (canonical and isomeric)
C#CC1CCCS1

Synonyms

  • 2-Ethynyltetrahydrothiophene
  • Thiophene, 2-ethynyltetrahydro-

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
112.20 g/molcalc.
Exact mass
112.0347 Dacalc.
LogP (octanol/water)
1.52calc.
Topological polar surface area
0 Ųcalc.
Hydrogen bond donors
0calc.
Hydrogen bond acceptors
1calc.
Rotatable bonds
0calc.
Heavy atoms
7calc.
Rings
1calc.
Aromatic rings
0calc.
Fraction sp3 carbons
0.67calc.
Formal charge
0calc.
Stereocentres
1calc.
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, C1CCSC1

C1CCSC1

1 ring, 5 atoms, the Tetrahydrothiophene ring system.

1,470 other chemicals share this scaffold

Safety and hazards

GHS classification summary, not a safety data sheet

No GHS hazard classification is recorded for this substance yet. That does not mean it is harmless.

GHS classification summary, not a safety data sheet (SDS). Classifications can differ by supplier, grade and concentration. Always check the supplier's SDS.

2-Ethynylthiolane suppliers

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2-Ethynylthiolane 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

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 2-Ethynylthiolane 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 2-Ethynylthiolane is indicative (it was assigned by structure rules). Confirm the classification with your customs broker before shipping.

Frequently asked questions

Quick answers about 2-Ethynylthiolane, based on the data on this page

What is 2-Ethynylthiolane?

2-Ethynylthiolane is a chemical substance with the molecular formula C6H8S and a molar mass of 112.20 g/mol. Its CAS registry number is 84203-70-3.

What is the CAS number of 2-Ethynylthiolane?

The CAS registry number of 2-Ethynylthiolane is 84203-70-3.

What is the molecular formula and weight of 2-Ethynylthiolane?

The molecular formula of 2-Ethynylthiolane is C6H8S and its molar mass is 112.20 g/mol.

What is 2-Ethynylthiolane used for?

Known uses and roles of 2-Ethynylthiolane include building blocks in research and laboratory and screening compounds in research and laboratory.

Is 2-Ethynylthiolane hazardous?

No GHS hazard classification for 2-Ethynylthiolane is recorded on CompoundList yet. That does not prove it is safe. Always read the supplier safety data sheet.

What is the HS code of 2-Ethynylthiolane?

2-Ethynylthiolane 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 2-Ethynylthiolane?

Post a free request on CompoundList and suppliers of 2-Ethynylthiolane will send you quotes. Your contact details stay private until you accept a quote.

What is the price of 2-Ethynylthiolane?

Suppliers quote 2-Ethynylthiolane 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 2-Ethynylthiolane

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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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