2-(Methylthio)ethylamine
2-(Methylthio)ethylamine (CAS: 18542-42-2), with the molecular formula CH3SCH2CH2NH2 and a molecular weight of 91.18 g/mol, is an organic compound featuring both a thioether and a primary amine functional group. It serves as a versatile building block in organic synthesis and chemical research. This compound is typically utilised in laboratory settings for the creation of more complex molecules and in various chemical research applications.
- IUPAC
- 2-Aminoethyl methyl sulfide,S-Methylcysteamine
- Synonyms
- 2-Aminoethyl methyl sulfideS-Methylcysteamine

Organic Synthesis Intermediate
Utilised as a key building block in the synthesis of complex organic molecules. Its dual functionality allows for diverse chemical transformations in research and development.
Chemical Research and Development
Employed in laboratory settings for exploring new chemical pathways and developing novel compounds. Its structure makes it valuable for introducing sulfur and amine functionalities.
Material Science Applications
Potential use in the development of specialised polymers or materials where the thioether and amine groups can impart specific properties.
| Molecular weight | 91.18 |
|---|---|
| Linear formula | CH3SCH2CH2NH2 |
| Assay | ≥90% (GC) |
| Boiling point | 146-149 °C(lit.) |
| Density | 0.98 g/mL at 20 °C(lit.) |
| Refractive index | n20/D 1.495(lit.) |


Hazard statements
- H226Flammable liquid and vapour
- H314Causes severe skin burns and eye damage
Precautionary statements
- P280Wear protective gloves, clothing and eye/face protection
- P305IF IN EYES
- P310Immediately call a POISON CENTER or doctor
| Protective equipment | Faceshields, full-face respirator (US), Gloves, Goggles, multi-purpose combination respirator cartridge (US), type ABEK (EN14387) respirator filter |
|---|---|
| Flash point | 36 °C / 96.8 °F |
| Transport (UN / ADR) | UN 2734 8/PG 2 |
| Water hazard class (WGK, DE) | 3 |
| Hazard codes (EU) | C |
| Risk statements (R) | 10-34 |
| Safety statements (S) | 26-36/37/39-45 |
Hazard information is provided for guidance. Always consult the product Safety Data Sheet (SDS), available on request, before handling.
Documentation
Every batch ships with a Certificate of Analysis covering assay, identity and purity; the grade is confirmed against your enquiry. Safety Data Sheets and technical data sheets are available on request.
Supply & logistics
Samples for technical evaluation; bulk MOQ by grade and packaging. In-stock material ships in 7–10 working days, worldwide, with full export documentation.
What is 2-(Methylthio)ethylamine used for?
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2-(Methylthio)ethylamine is primarily used as a building block in organic synthesis and in chemical research and development.
What is the CAS number and formula for 2-(Methylthio)ethylamine?
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The CAS number is 18542-42-2 and the molecular formula is CH3SCH2CH2NH2.
What grade and purity does Tech Serve Solutions supply?
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Tech Serve Solutions supplies 2-(Methylthio)ethylamine with an assay of ≥90% (GC). We do not represent this product as USP, BP, EP, or other pharmacopoeia grades.
How should 2-(Methylthio)ethylamine be handled safely?
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2-(Methylthio)ethylamine is a flammable liquid and causes severe skin burns and eye damage. Handle with appropriate personal protective equipment, including gloves, goggles, and a faceshield, in a well-ventilated area. Refer to the safety data sheet for detailed handling procedures.
Is 2-(Methylthio)ethylamine a controlled substance?
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Based on the provided data, 2-(Methylthio)ethylamine is not indicated as a controlled substance. However, users should verify local regulations.
How is 2-(Methylthio)ethylamine packed, shipped, and exported?
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Tech Serve Solutions adheres to all relevant regulations for packing, shipping, and exporting chemical compounds, ensuring safe and compliant transit.
How can I request a sample or quote for 2-(Methylthio)ethylamine?
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To request a sample or quote, please contact our sales team through the website or direct inquiry channels, providing your specific requirements.
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