Pharmaceutical Materials

CAS Number: 554-14-3

Molecular Formula: C5H6S

Molecular Weight: 98.17 g/mol

Appearance: Colorless or slightly yellow liquid

Melting Point: -63°C

Boiling Point: 113°C

Density: 1.014 g/mL at 25°C

Usage: Used as a flavoring agent and in organic synthesis.

 

Aspect	Details
Name	2-Methylthiophene
Common Synonyms	2-Thienylmethane, Thiophen-2-methyl
CAS No.	5188-73-2
Molecular Formula	C₅H₆S
Molecular Weight	98.17 g/mol
Physical Properties	Appearance: Colorless to pale yellow liquid Boiling Point: 113-115 °C Melting Point: -85 °C Solubility: Insoluble in water; soluble in organic solvents (e.g., ethanol, ether) Density: 1.04 g/cm³
Chemical Properties	Contains a methyl group (-CH₃) and a thiophene ring (five-membered heterocycle with sulfur) Exhibits electrophilic substitution reactivity due to the electron-rich nature of the thiophene ring Undergoes oxidation to form sulfoxides or sulfones under suitable conditions Stable under normal conditions but may polymerize in the presence of strong acids or radicals
Applications	Used as an intermediate in pharmaceutical synthesis (e.g., antiviral and antifungal agents) Employed in agrochemicals as a building block for herbicides and insecticides Utilized in the production of conductive polymers and specialty chemicals
Safety Information	GHS Hazards: H226 (flammable liquid and vapor), H315 (causes skin irritation) Precautionary Measures: Avoid open flames and heat sources; use PPE Storage: Keep in a tightly sealed container in a cool, well-ventilated area

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