2-Methylthiophene
- CAS NO.:554-14-3
- Empirical Formula: C5H6S
- Molecular Weight: 98.17
- MDL number: MFCD00005451
- EINECS: 209-063-0
- SAFETY DATA SHEET (SDS)
- Update Date: 2025-09-25 17:15:13
What is 2-Methylthiophene?
Chemical properties
clear colorless to slightly yellow liquid
The Uses of 2-Methylthiophene
2-Methylthiophene, is used as a flavoring agent that naturally occurs in grilled and roasted beef, papaya, cooked shrimp, whiskey, and in trace amounts in roasted chicken;
Definition
ChEBI: 2-methylthiophene is a member of the class of thiophenes that is thiophene in which the hydrogen atom at position 2 is substituted by a methyl group. It has a role as a flavouring agent and a Maillard reaction product. It is a member of thiophenes and a volatile organic compound. It is functionally related to a thiophene.
Production Methods
2-Methylthiophene is commercially produced to 98 wt% purity by VP cyclization.
What are the applications of Application
2-Methylthiophene is a feasible raw material for the production of several of the important 2-substituted thiophenes. It may be used to manufacture 2-chloromethylthiophene (2-thenyl chloride), but this and further syntheses must be completed in situ, because of its instability.
Synthesis Reference(s)
The Journal of Organic Chemistry, 14, p. 638, 1949 DOI: 10.1021/jo01156a016
Tetrahedron Letters, 22, p. 2443, 1981 DOI: 10.1016/S0040-4039(01)92928-4
Properties of 2-Methylthiophene
| Melting point: | -63 °C (lit.) |
| Boiling point: | 113 °C (lit.) |
| Density | 1.014 g/mL at 25 °C (lit.) |
| vapor pressure | 47.6 mm Hg ( 37.7 °C) |
| refractive index | n |
| Flash point: | 45 °F |
| storage temp. | 2-8°C |
| solubility | immiscible |
| form | Liquid |
| Specific Gravity | 1.025 (20℃) |
| color | Clear colorless to yellow |
| Odor | at 0.01 % in propylene glycol. sulfurous alliaceous onion roasted green |
| Water Solubility | immiscible |
| BRN | 103734 |
| CAS DataBase Reference | 554-14-3(CAS DataBase Reference) |
| NIST Chemistry Reference | Thiophene, 2-methyl-(554-14-3) |
| EPA Substance Registry System | Thiophene, 2-methyl- (554-14-3) |
Safety information for 2-Methylthiophene
| Signal word | Danger |
| Pictogram(s) |
![]() Flame Flammables GHS02 |
| GHS Hazard Statements |
H225:Flammable liquids |
| Precautionary Statement Codes |
P210:Keep away from heat/sparks/open flames/hot surfaces. — No smoking. P370+P378:In case of fire: Use … for extinction. P403+P235:Store in a well-ventilated place. Keep cool. |
Computed Descriptors for 2-Methylthiophene
| InChIKey | XQQBUAPQHNYYRS-UHFFFAOYSA-N |
New Products
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