2-Chloro-4-phenylthiazole
2-Chloro-4-phenylthiazole (CAS: 1826-23-9) is a halogenated heterocyclic compound with the molecular formula C9H6ClNS and a molecular weight of 195.67 g/mol. It serves as a valuable building block in organic synthesis, particularly for the construction of more complex molecules. Its structure, featuring a thiazole ring substituted with a chlorine atom and a phenyl group, makes it a useful intermediate in the development of novel chemical entities for various research applications.

Organic Synthesis Intermediate
2-Chloro-4-phenylthiazole is employed as a key intermediate in multistep organic syntheses. The presence of the reactive chlorine atom and the thiazole core allows for diverse functionalization and derivatization.
Building Block for Heterocycles
This compound functions as a versatile building block for the synthesis of various heterocyclic systems. Its structure can be incorporated into larger molecules, contributing unique electronic and structural properties.
Research and Development
Used in academic and industrial research settings for exploring new chemical reactions and developing novel compounds with potential applications in medicinal chemistry and materials science.
| Molecular weight | 195.67 |
|---|---|
| Empirical formula | C9H6ClNS |
| Assay | 97% |
| Melting point | 54-58 °C |


Hazard statements
- H301Toxic 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
- P301IF SWALLOWED
- P305IF IN EYES
| Protective equipment | dust mask type N95 (US), Eyeshields, Faceshields, Gloves |
|---|---|
| Flash point | >110 °C / >230 °F |
| Transport (UN / ADR) | UN 2811 6.1 / PGIII |
| 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 2-Chloro-4-phenylthiazole used for?
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2-Chloro-4-phenylthiazole is primarily used as a building block and intermediate in organic synthesis for the creation of more complex chemical structures, particularly within research and development settings.
What is the CAS number and formula for 2-Chloro-4-phenylthiazole?
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The CAS number is 1826-23-9 and the empirical formula is C9H6ClNS.
What grade and purity does Tech Serve Solutions supply?
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Tech Serve Solutions supplies 2-Chloro-4-phenylthiazole with an assay of 97%. It is supplied as a technical/research grade chemical and is not represented as USP, BP, or EP.
How should 2-Chloro-4-phenylthiazole be handled safely?
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Handling 2-Chloro-4-phenylthiazole requires caution due to its hazards. Recommended personal protective equipment includes a dust mask type N95 (US), eyeshields, faceshields, and gloves. It is classified as Dangerous for the environment and toxic if swallowed, causing skin irritation and serious eye damage, and may cause respiratory irritation.
Is 2-Chloro-4-phenylthiazole a controlled substance?
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The provided data does not indicate that 2-Chloro-4-phenylthiazole is a controlled substance.
How is 2-Chloro-4-phenylthiazole packed and exported?
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2-Chloro-4-phenylthiazole is packed and shipped according to UN 2811 6.1 / PGIII regulations for hazardous materials. TSS is a specialist global supplier and exporter of fine chemicals.
How can I request a quote or sample?
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To request a quote or sample of 2-Chloro-4-phenylthiazole, please contact our sales team through the website or by telephone.
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