5-Amino-4-bromo-3-methylisothiazole
5-Amino-4-bromo-3-methylisothiazole (CAS: 85508-99-2) is a halogenated heterocyclic compound with the molecular formula C4H5BrN2S and a molecular weight of 193.06 g/mol. It serves as a valuable building block in organic synthesis, particularly for the construction of complex molecules in research and development. Its structure makes it suitable for further chemical transformations in the synthesis of novel compounds.
- IUPAC
- 4-Bromo-3-methylisothiazol-5-ylamine

Chemical Synthesis Intermediate
Utilised as a key intermediate in multi-step organic synthesis. Its reactive functional groups allow for diverse chemical modifications and the construction of more complex molecular architectures.
Heterocyclic Chemistry Research
Employed in academic and industrial research laboratories focusing on the development of new heterocyclic compounds. Its isothiazole core is a motif found in various biologically active molecules.
Building Block for Novel Materials
Applicable in the synthesis of novel organic materials where a specific heterocyclic structure is required. Its incorporation can influence the electronic and physical properties of the final material.
| Molecular weight | 193.06 |
|---|---|
| Empirical formula | C4H5BrN2S |
| Assay | 97% |
| Storage temperature | 2-8°C |
| Melting point | 102 - 106 °C |


Hazard statements
- H302Harmful if swallowed
- H315Causes skin irritation
- H318Causes serious eye damage
- H335May cause respiratory irritation
Precautionary statements
- P261Avoid breathing dust, fume, gas or vapours
- P280Wear protective gloves, clothing and eye/face protection
- P305IF IN EYES
| Water hazard class (WGK, DE) | 3 |
|---|---|
| Hazard codes (EU) | Xn |
| Risk statements (R) | 22-37/38-41 |
| Safety statements (S) | 26-39 |
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 5-Amino-4-bromo-3-methylisothiazole used for?
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5-Amino-4-bromo-3-methylisothiazole is used as a building block and intermediate in organic synthesis, particularly within heterocyclic chemistry research and the development of novel chemical entities.
What are the CAS number and chemical formula for this compound?
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The CAS number is 85508-99-2 and the chemical formula is C4H5BrN2S.
What grade and purity does Tech Serve Solutions supply?
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Tech Serve Solutions supplies 5-Amino-4-bromo-3-methylisothiazole with a minimum purity of 97% (Assay). We do not represent this product as USP, BP, EP, or any other pharmacopoeia grade.
How should 5-Amino-4-bromo-3-methylisothiazole be handled and stored?
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This compound is classified as Danger and carries hazard statements H302 (Harmful if swallowed), H315 (Causes skin irritation), H318 (Causes serious eye damage), and H335 (May cause respiratory irritation). It should be handled with appropriate personal protective equipment in a well-ventilated area. Storage is recommended at 2-8°C.
Is this chemical a controlled substance?
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Based on the provided data, there is no indication that 5-Amino-4-bromo-3-methylisothiazole is a controlled substance.
How is 5-Amino-4-bromo-3-methylisothiazole packed and exported?
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Tech Serve Solutions, as a global supplier and exporter, can provide information on packing and export procedures upon request, adhering to all relevant international shipping regulations.
How can I request a sample or quote for 5-Amino-4-bromo-3-methylisothiazole?
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Please contact our sales team directly through the website or via email to request a sample or a quotation for 5-Amino-4-bromo-3-methylisothiazole.
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