2-amino-5-chloropyrazine
2-amino-5-chloropyrazine (CAS 33332-29-5), a heterocyclic organic compound with the molecular formula C4H4ClN3 and a molecular weight of 129.55 g/mol, serves as a crucial building block in chemical synthesis. Its structure, featuring a pyrazine ring substituted with an amino group and a chlorine atom, makes it a versatile intermediate for the development of various complex molecules. Primarily utilised in research and development laboratories, it finds application in the synthesis of novel pharmaceutical agents and agrochemicals.

Pharmaceutical Intermediate
This compound is employed in the synthesis of active pharmaceutical ingredients (APIs). Its pyrazine core allows for diverse chemical modifications, leading to potential drug candidates for various therapeutic areas.
Agrochemical Development
2-amino-5-chloropyrazine acts as a precursor in the creation of new agrochemicals, such as herbicides or insecticides. Its structural features can be modified to enhance efficacy and specificity in crop protection.
Heterocyclic Synthesis
As a heterocyclic building block, it is valuable for constructing more complex organic structures. Researchers utilise it to introduce the chloropyrazine moiety into larger molecular frameworks for diverse applications.
Research and Development
This chemical is a standard reagent in organic synthesis laboratories, facilitating the exploration of new chemical reactions and the discovery of novel compounds with potential industrial applications.
| Molecular weight | 129.55 |
|---|---|
| Empirical formula | C4H4ClN3 |

Hazard statements
- H302Harmful if swallowed
- H315Causes skin irritation
- H319Causes serious eye irritation
- H335May cause respiratory irritation
Precautionary statements
- P261Avoid breathing dust, fume, gas or vapours
- P305IF IN EYES
| Water hazard class (WGK, DE) | 3 |
|---|---|
| Hazard codes (EU) | Xn |
| Risk statements (R) | 22-36 |
| Safety statements (S) | 26 |
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-amino-5-chloropyrazine used for?
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2-amino-5-chloropyrazine (CAS 33332-29-5) is primarily used as a building block in chemical synthesis, particularly for developing pharmaceuticals and agrochemicals. It is also valuable in heterocyclic synthesis and general research and development.
What are the CAS number and molecular formula for 2-amino-5-chloropyrazine?
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The CAS number for 2-amino-5-chloropyrazine is 33332-29-5, and its molecular formula is C4H4ClN3.
What grade and purity does Tech Serve Solutions supply?
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Tech Serve Solutions supplies 2-amino-5-chloropyrazine. The specific grade and purity are typically research or technical grade, and we do not represent it as USP, BP, EP, or any other pharmacopoeia standard unless explicitly stated. Please refer to the product specification sheet for precise details.
How should 2-amino-5-chloropyrazine be handled safely?
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2-amino-5-chloropyrazine is classified with GHS07 and the signal word 'Warning'. It carries hazard statements H302 (Harmful if swallowed), H315 (Causes skin irritation), H319 (Causes serious eye irritation), and H335 (May cause respiratory irritation). Ensure adequate ventilation, wear appropriate personal protective equipment (gloves, eye protection), and avoid inhalation and contact with skin and eyes. Handle in accordance with safety data sheet recommendations.
Does Tech Serve Solutions export this chemical?
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Yes, Tech Serve Solutions is a specialist global supplier and exporter of fine chemicals, including 2-amino-5-chloropyrazine. We ensure compliant packaging and shipping for international orders.
How can I request a sample or quote for 2-amino-5-chloropyrazine?
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To request a sample or quote for 2-amino-5-chloropyrazine, please contact our sales team through the website or by calling our main line. Provide the product name and CAS number (33332-29-5) for prompt service.
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