O-Phenyl chlorothionoformate
O-Phenyl chlorothionoformate (CAS: 1005-56-7) is a chemical compound with the formula ClC(S)OC6H5 and a molecular weight of 172.63 g/mol. This sulfur-containing organic compound serves as a valuable building block in chemical synthesis. It is primarily utilised in organic chemistry research and development for the construction of more complex molecular structures, particularly those involving thiocarbonyl functionalities.
- IUPAC
- Phenyl thionochloroformate

Organic Synthesis Reagent
O-Phenyl chlorothionoformate is employed as a reagent in organic synthesis for introducing thiocarbonyl groups into various molecules. Its reactivity allows for the formation of diverse sulfur-containing heterocycles and derivatives.
Building Block for Complex Molecules
This compound acts as a versatile building block in the multi-step synthesis of specialised organic compounds. It is particularly useful in the development of novel chemical entities for research purposes.
Research and Development
Used in academic and industrial research laboratories, O-Phenyl chlorothionoformate supports investigations into new chemical reactions and the synthesis of potential pharmaceutical intermediates or advanced materials.
| Molecular weight | 172.63 |
|---|---|
| Linear formula | ClC(S)OC6H5 |
| Assay | 99% |
| Boiling point | 81-83 °C/6 mmHg(lit.) |
| Density | 1.248 g/mL at 25 °C(lit.) |
| Refractive index | n20/D 1.581(lit.) |

Hazard statements
- H314Causes severe skin burns and eye damage
Precautionary statements
- P280Wear protective gloves, clothing and eye/face protection
- P305IF IN EYES
- P310Immediately call a POISON CENTER or doctor
| Protective equipment | Faceshields, full-face respirator (US), Gloves, Goggles, multi-purpose combination respirator cartridge (US), type ABEK (EN14387) respirator filter |
|---|---|
| Flash point | 81 °C / 177.8 °F |
| Transport (UN / ADR) | UN 3265 8 / PGII |
| Water hazard class (WGK, DE) | 3 |
| Hazard codes (EU) | C |
| Risk statements (R) | 34 |
| Safety statements (S) | 26-36/37/39-45 |
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 O-Phenyl chlorothionoformate used for?
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O-Phenyl chlorothionoformate is used as a reagent in organic synthesis and as a building block for constructing complex organic molecules, particularly in research and development.
What is the CAS number and chemical formula for O-Phenyl chlorothionoformate?
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The CAS number is 1005-56-7 and the chemical formula is ClC(S)OC6H5.
What grade and purity does Tech Serve Solutions supply?
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Tech Serve Solutions supplies O-Phenyl chlorothionoformate with an assay of 99%. We do not represent this product as USP, BP, or EP grade.
How should O-Phenyl chlorothionoformate be handled?
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O-Phenyl chlorothionoformate is corrosive and causes severe skin burns and eye damage (H314). Handle with appropriate personal protective equipment, including a face shield, gloves, and goggles. Ensure adequate ventilation and use a suitable respirator.
Is O-Phenyl chlorothionoformate exported by TSS?
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Yes, Tech Serve Solutions is a specialist global supplier and exporter of fine chemicals, including O-Phenyl chlorothionoformate.
How can I request a quote or sample for O-Phenyl chlorothionoformate?
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Please contact our sales team via the website or telephone to request a quote or sample for O-Phenyl chlorothionoformate.
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