2,4-Dichloropyrimidine
2,4-Dichloropyrimidine (CAS: 3934-20-1) is a heterocyclic organic compound with the molecular formula C4H2Cl2N2 and a molecular weight of 148.98 g/mol. This pyrimidine derivative serves as a crucial building block in chemical synthesis, particularly for creating halogenated heterocyclic compounds. Its primary utility lies in the preparation of various complex organic molecules, including those with potential pharmaceutical applications.
- Synonyms
- C4H2Cl2N22,4-Dichloropyrimidine

Synthesis of Medicinally Important Compounds
2,4-Dichloropyrimidine is employed in the synthesis of medicinally significant structures, such as 4-aryl-5-pyrimidinylimidazoles. These compounds often form the core of molecules investigated for therapeutic properties.
Heterocyclic Chemical Synthesis
As a versatile building block, it is instrumental in constructing more complex heterocyclic systems. Its reactivity allows for diverse functionalization pathways in organic synthesis.
Research and Development Reagent
This compound is valuable in research laboratories for exploring novel synthetic routes and developing new chemical entities. It is a key intermediate for academic and industrial R&D.
| Molecular weight | 148.98 |
|---|---|
| Empirical formula | C4H2Cl2N2 |
| Assay | 98% |
| Boiling point | 101 °C/23 mmHg(lit.) |
| Application | 2,4-Dichloropyrimidine was used in the synthesis of medicinally important 4-aryl-5-pyrimidinylimidazoles1. |
| Melting point | 57-61 °C(lit.) |

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 | dust mask type N95 (US), Eyeshields, Gloves |
|---|---|
| Water hazard class (WGK, DE) | 3 |
| Hazard codes (EU) | Xi |
| Risk statements (R) | 36/37/38 |
| Safety statements (S) | 26-36 |
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 2,4-Dichloropyrimidine used for?
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2,4-Dichloropyrimidine is primarily used as a building block in chemical synthesis, notably for preparing medicinally important compounds like 4-aryl-5-pyrimidinylimidazoles and other complex heterocyclic structures.
What are the CAS number and formula for 2,4-Dichloropyrimidine?
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The CAS number for 2,4-Dichloropyrimidine is 3934-20-1, and its molecular formula is C4H2Cl2N2.
What grade and purity does Tech Serve Solutions supply?
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Tech Serve Solutions supplies 2,4-Dichloropyrimidine with an assay of 98%. We do not represent this product as USP, BP, EP, or other pharmacopoeia grades unless explicitly stated in the product documentation.
How should 2,4-Dichloropyrimidine be handled safely?
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2,4-Dichloropyrimidine is a Warning substance, classified with H315 (Causes skin irritation), H319 (Causes serious eye irritation), and H335 (May cause respiratory irritation). Handle with appropriate personal protective equipment, including eyeshields, gloves, and a dust mask (type N95 US recommended). Ensure adequate ventilation. Refer to the safety data sheet for full handling instructions.
How is 2,4-Dichloropyrimidine packed, shipped, and exported?
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2,4-Dichloropyrimidine is carefully packed to ensure safe transit and is exported globally by Tech Serve Solutions, adhering to all relevant shipping regulations for chemical substances.
How can I request a sample or quote for 2,4-Dichloropyrimidine?
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To request a sample or a quote for 2,4-Dichloropyrimidine, please contact our sales team through the website or by direct enquiry, providing your specific requirements.
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