1-(3,4-Dichlorophenyl)-2-thiourea
1-(3,4-Dichlorophenyl)-2-thiourea (CAS 19250-09-0) is an arylthiourea building block with the linear formula Cl2C6H3NHCSNH2 (C7H6Cl2N2S) and a molar mass of 221.11 g/mol. This crystalline sulfur compound carries a 3,4-dichlorophenyl group bonded to a thiourea moiety and melts at about 197-199 degC. It is used mainly as an intermediate and reagent in organic synthesis, particularly for constructing sulfur- and nitrogen-containing heterocycles. Tech Serve Solutions supplies it as a research-grade building block.
- Synonyms
- 1-(3,4-Dichlorophenyl)-2-thiourea(3,4-Dichlorophenyl)thioureaN-(3,4-Dichlorophenyl)thiourea3,4-DichlorophenylthioureaCl2C6H3NHCSNH2

Organic synthesis building block
Serves as a substituted thiourea intermediate in multistep organic synthesis, valued for its reactive thiocarbonyl and amine functionalities. The 3,4-dichlorophenyl substituent allows further functionalisation of the aromatic ring.
Heterocycle construction
Thioureas of this type are widely used precursors for sulfur- and nitrogen-containing heterocycles such as thiazoles, thiadiazoles and related ring systems via cyclisation reactions.
Sulfur-transfer and thiocarbonyl reagent
The thiourea group can act as a source of sulfur or as a thiocarbonyl component in condensation and substitution chemistry. This makes it useful for introducing C-S bonds into target molecules.
Research and method development
Used in laboratory research and structure-activity studies where a defined dichloroaryl thiourea scaffold is required. Suitable for exploratory and analytical work rather than formulated end products.
| Molecular weight | 221.11 |
|---|---|
| Linear formula | Cl2C6H3NHCSNH2 |
| Melting point | 197-199 °C(lit.) |
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 1-(3,4-Dichlorophenyl)-2-thiourea used for?
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It is used chiefly as a building block and reagent in organic synthesis. The compound is a substituted arylthiourea that serves as an intermediate for preparing sulfur- and nitrogen-containing heterocycles and for introducing thiourea or thiocarbonyl functionality into larger molecules.
What is the CAS number and molecular formula of 1-(3,4-Dichlorophenyl)-2-thiourea?
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The CAS number is 19250-09-0. The linear formula is Cl2C6H3NHCSNH2, corresponding to the molecular formula C7H6Cl2N2S, with a molecular weight of 221.11 g/mol. Related identifiers include EC number 242-919-1 and MDL number MFCD00004935.
What grade and purity does Tech Serve Solutions supply?
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We supply 1-(3,4-Dichlorophenyl)-2-thiourea as a research- and technical-grade building block for synthesis and laboratory use. We do not represent it as USP, BP or EP pharmacopoeial grade. A current specification and certificate of analysis, including the assay of the batch on offer, can be provided with your enquiry.
What are the safety and handling considerations?
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Handle as a laboratory chemical using good practice: wear suitable gloves, eye protection and a lab coat, avoid dust generation, and work with adequate ventilation. The substance is classified WGK 3 in Germany, meaning it is severely hazardous to water, so prevent release into drains and the environment. Always consult the current Safety Data Sheet before use.
How is 1-(3,4-Dichlorophenyl)-2-thiourea packed, shipped and exported?
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It is supplied as a solid in securely sealed containers with full labelling, sized from research quantities to bulk according to requirement. Packaging is suitable for international freight, accompanied by the appropriate documentation and Safety Data Sheet. As a specialist exporter, Tech Serve Solutions arranges compliant despatch to laboratories and manufacturers worldwide.
How do I request a sample or quote?
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Contact Tech Serve Solutions with your required quantity, packaging and destination, and our team will respond with availability, lead time and the relevant documentation. We can also provide a specification and Safety Data Sheet to support evaluation.
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