4,6-Dichloro-2-(methylthio)pyrimidine-5-carboxaldehyde
4,6-Dichloro-2-(methylthio)pyrimidine-5-carboxaldehyde (CAS: 33097-11-9) is a halogenated heterocyclic compound with the molecular formula C6H4Cl2N2OS and a molecular weight of 223.08 g/mol. This chemical is primarily utilised as a building block in organic synthesis, particularly within the pharmaceutical and agrochemical industries. Its structure, featuring a pyrimidine core with reactive chloro and aldehyde functionalities, makes it a valuable intermediate for creating more complex molecular architectures.
- IUPAC
- 4,6-Dichloro-5-formyl-2-(methylthio)pyrimidine
- Synonyms
- C6H4Cl2N2OS4,6-Dichloro-5-formyl-2-(methylthio)pyrimidine

Pharmaceutical Intermediate
This compound serves as a key intermediate in the synthesis of various pharmaceutical agents. Its functional groups allow for diverse chemical transformations, enabling the construction of complex drug molecules.
Agrochemical Synthesis
Utilised in the development of novel agrochemicals, including herbicides and pesticides. The pyrimidine scaffold is common in biologically active compounds for crop protection.
Organic Synthesis Building Block
As a versatile building block, it is employed in academic and industrial research for creating novel organic compounds. Its reactive sites facilitate a range of chemical reactions.
| Molecular weight | 223.08 |
|---|---|
| Empirical formula | C6H4Cl2N2OS |
| Assay | 97% |
| Melting point | 86-91 °C |

Hazard statements
- H302Harmful if swallowed
- H317May cause an allergic skin reaction
Precautionary statements
- P280Wear protective gloves, clothing and eye/face protection
| Water hazard class (WGK, DE) | 3 |
|---|---|
| Hazard codes (EU) | Xn |
| Risk statements (R) | 22-43 |
| Safety statements (S) | 36/37 |
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 4,6-Dichloro-2-(methylthio)pyrimidine-5-carboxaldehyde used for?
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This compound is primarily used as a building block in organic synthesis, with significant applications as an intermediate in the pharmaceutical and agrochemical industries.
What is the CAS number and molecular formula?
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The CAS number is 33097-11-9 and the molecular formula is C6H4Cl2N2OS.
What grade and purity does Tech Serve Solutions supply?
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Tech Serve Solutions supplies this product with an assay of 97%. We do not represent this product as USP, BP, or EP grade.
What are the safety considerations for handling this chemical?
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This compound is classified as a Warning with hazards H302 (Harmful if swallowed) and H317 (May cause an allergic skin reaction). Appropriate personal protective equipment, such as gloves and eye protection, should be worn during handling. Consult the Safety Data Sheet for full details.
How is this chemical packed and exported?
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Tech Serve Solutions expertly packs and exports chemicals globally, adhering to all relevant shipping and safety regulations to ensure secure delivery.
How can I request a quote or sample?
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Please contact our sales team via the website or email to request a quote or sample of 4,6-Dichloro-2-(methylthio)pyrimidine-5-carboxaldehyde.
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