3-Ethynylthiophene

Modify Date: 2026-07-01 09:47:35

3-Ethynylthiophene Structure
3-Ethynylthiophene structure
Common Name 3-Ethynylthiophene
CAS Number 67237-53-0 Molecular Weight 108.161
Density 1.1±0.1 g/cm3 Boiling Point 150.0±13.0 °C at 760 mmHg
Molecular Formula C6H4S Melting Point N/A
MSDS Chinese USA Flash Point 28.4±6.0 °C
Symbol GHS02 GHS05 GHS07
GHS02, GHS05, GHS07
Signal Word Danger

 Names

This table lists Chinese names, IUPAC names and various aliases of this chemical substance.

Name 3-Ethynylthiophene
Synonym More Synonyms

 Chemical & Physical Properties

This table shows physicochemical parameters including melting point, boiling point, density, solubility and optical rotation. Missing data is marked as N/A.

Density 1.1±0.1 g/cm3
Boiling Point 150.0±13.0 °C at 760 mmHg
Molecular Formula C6H4S
Molecular Weight 108.161
Flash Point 28.4±6.0 °C
Exact Mass 108.003372
PSA 28.24000
LogP 1.88
Appearance of Characters Liquid | Colorless to yellow to orange
Vapour Pressure 5.0±0.3 mmHg at 25°C
Index of Refraction 1.571
InChIKey MJHLPKWONJUCFK-UHFFFAOYSA-N
SMILES C#Cc1ccsc1
Storage condition Room temperature.
Water Solubility Slightly soluble in water.

 MSDS

This table provides MSDS information including hazard classification, first‑aid, fire‑fighting, spill handling, operation and storage instructions.

 Safety Information

This table covers safety warnings, protective measures, incompatible substances and disposal guidelines for this compound.

Symbol GHS02 GHS05 GHS07
GHS02, GHS05, GHS07
Signal Word Danger
Hazard Statements H226-H315-H318-H335
Precautionary Statements P261-P280-P305 + P351 + P338
Personal Protective Equipment Eyeshields;Faceshields;full-face respirator (US);Gloves;multi-purpose combination respirator cartridge (US);type ABEK (EN14387) respirator filter
Hazard Codes Xi: Irritant;
Risk Phrases R10;R37/38;R41
Safety Phrases S16-S26-S39
RIDADR UN 1993
WGK Germany 3
Packaging Group III
Hazard Class 3.0
HS Code 2934999090

 Customs

This table shows customs‑related data including HS‑code, tariff and regulatory conditions for import and export.

HS Code 2934999090
Summary 2934999090. other heterocyclic compounds. VAT:17.0%. Tax rebate rate:13.0%. . MFN tariff:6.5%. General tariff:20.0%

 Articles1

More Articles

This table lists relevant public references with title, journal and publication metadata for this compound.

Silver-Mediated Synthesis of Indolizines via Oxidative C-H functionalization and 5- endo-dig cyclization.

Tetrahedron Lett. 55(50) , 6922-6924, (2014)

An efficient strategy for the synthesis of indolizines from readily available starting materials via oxidative C-H functionalization and 5-endo-dig cyclization in one step has been demonstrated. This ...

 Synonyms

This table collects all English aliases, systematic names and CAS‑related synonyms of the compound.

MFCD04039973
Thiophene,3-ethynyl
3-Thienylacetylene
3-ethenyl-thiophene
(Thien-3-yl)acetylene
3-thiofuranyl acetylene
3-Ethynylthiophene
3-thiopheneacetylene
3-Ethynyl thiophene
(thiophen-3-yl)acetylene

 3-Ethynylthiophene | FAQ

This section contains frequently‑asked‑questions about this compound, including basic parameters, properties, storage conditions and corresponding answers.

Q: What is the InChIKey of 3-Ethynylthiophene?
A: InChIKey of 3-Ethynylthiophene is MJHLPKWONJUCFK-UHFFFAOYSA-N.
Q: What is the CAS number of 3-Ethynylthiophene?
A: CAS number of 3-Ethynylthiophene is 67237-53-0.
Q: What are the storage conditions for 3-Ethynylthiophene?
A: Storage conditions for 3-Ethynylthiophene: Room temperature.
Q: What is the molecular formula of 3-Ethynylthiophene?
A: Molecular formula of 3-Ethynylthiophene is C6H4S.
Q: What is the molecular weight of 3-Ethynylthiophene?
A: Molecular weight of 3-Ethynylthiophene is 108.161.
Q: What is the SMILES notation of 3-Ethynylthiophene?
A: SMILES notation of 3-Ethynylthiophene is C#Cc1ccsc1.
Q: What is the physical appearance of 3-Ethynylthiophene?
A: 3-Ethynylthiophene appears as Liquid | Colorless to yellow to orange.
Q: What is the polar surface area (PSA) of 3-Ethynylthiophene?
A: Polar surface area (PSA) of 3-Ethynylthiophene is 28.24000.
Q: What is the English name of 3-Ethynylthiophene?
A: The English name of 3-Ethynylthiophene is 3-Ethynylthiophene.
Q: What is the boiling point of 3-Ethynylthiophene?
A: Boiling point of 3-Ethynylthiophene is 150.0±13.0 °C at 760 mmHg.

 3-Ethynylthiophenefactory

This table lists manufacturers and suppliers of this compound, including vendor names and product supply reference information.

Shanghai Nianxing Industrial Co., Ltd
Dayang Chem (Hangzhou) Co., Ltd.
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