3-(Methylthio)aniline
3-(Methylthio)aniline (CAS: 1783-81-9), with the molecular formula C7H9NS and a molecular weight of 139.22 g/mol, is a key organic building block. This compound is utilised in chemical synthesis, particularly in the creation of novel organic molecules. Its primary applications stem from its unique structure, making it valuable for researchers and manufacturers in various chemical sectors.
- IUPAC
- 3-(Methylmercapto)aniline,3-Aminothioanisole
- Synonyms
- 3-Aminothioanisole3-(Methylmercapto)aniline

Synthesis of Phenyl Azobenzene Sulfonamide Derivatives
3-(Methylthio)aniline has been employed in the synthesis of complex phenyl azobenzene sulfonamide derivatives. This application highlights its utility in constructing intricate molecular architectures for specialised chemical research.
Organic Synthesis Intermediate
As a versatile building block, 3-(Methylthio)aniline serves as an intermediate in a range of organic synthesis pathways. Its functional groups allow for diverse chemical transformations, supporting the development of new compounds.
Research and Development
This chemical is valuable for R&D purposes, enabling chemists to explore new reactions and create novel materials. Its availability facilitates advancements in synthetic chemistry and related fields.
| Molecular weight | 139.22 |
|---|---|
| Linear formula | CH3SC6H4NH2 |
| Assay | 97% |
| Boiling point | 163-165 °C/16 mmHg(lit.) |
| Density | 1.13 g/mL at 25 °C(lit.) |
| Refractive index | n20/D 1.637(lit.) |
| Application | 3-(Methylthio)aniline was used in the synthesis of phenyl azobenzene sulfonamide derivatives1. |

Hazard statements
- H315Causes skin irritation
- H319Causes serious eye irritation
- H335May cause respiratory irritation
Precautionary statements
- P261Avoid breathing dust, fume, gas or vapours
- P305IF IN EYES
| Protective equipment | Eyeshields, full-face respirator (US), Gloves, multi-purpose combination respirator cartridge (US), type ABEK (EN14387) respirator filter |
|---|---|
| Flash point | 113 °C / 235.4 °F |
| Transport (UN / ADR) | UN 3334 |
| Water hazard class (WGK, DE) | 3 |
| Hazard codes (EU) | Xi |
| Risk statements (R) | 36/37/38 |
| Safety statements (S) | 26-37/39 |
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 3-(Methylthio)aniline used for?
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3-(Methylthio)aniline is used in chemical synthesis, notably for preparing phenyl azobenzene sulfonamide derivatives and as a general intermediate in organic synthesis for research and development purposes.
What is the CAS number and chemical formula for 3-(Methylthio)aniline?
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The CAS number for 3-(Methylthio)aniline is 1783-81-9, and its chemical formula is C7H9NS (CH3SC6H4NH2).
What grade and purity does Tech Serve Solutions supply?
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Tech Serve Solutions typically supplies 3-(Methylthio)aniline with an assay of 97%. We do not represent this product as USP, BP, EP, or any other pharmacopoeia grade unless explicitly stated otherwise in the product specifications.
How should 3-(Methylthio)aniline be handled safely?
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Based on GHS classifications, 3-(Methylthio)aniline is a warning substance that may cause skin irritation (H315), serious eye irritation (H319), and respiratory irritation (H335). Appropriate personal protective equipment, including eyeshields and gloves, should be used, and handling should occur in a well-ventilated area or with a suitable respirator.
Is 3-(Methylthio)aniline a controlled substance?
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The provided data does not indicate that 3-(Methylthio)aniline is a controlled substance.
How is 3-(Methylthio)aniline packed, shipped, or exported?
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Tech Serve Solutions, as a global supplier, packs and exports chemicals according to international shipping regulations to ensure safe transit worldwide. Specific packaging details will be confirmed at the time of order.
How can I request a quote or sample of 3-(Methylthio)aniline?
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To request a quote or sample of 3-(Methylthio)aniline, please use the contact form on our website or reach out to our sales team directly. Please provide your details and the quantity required.
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