S-tert-Butyl chlorothioformate
S-tert-Butyl chlorothioformate (CAS: 13889-95-7) is a sulfur-containing organic compound with the linear formula (CH3)3CSCOCl and a molecular weight of 152.64 g/mol. This reactive intermediate is primarily utilized in organic synthesis for the introduction of the tert-butylthiocarbonyl group. Its specific chemical properties make it a valuable reagent in research and development laboratories for creating complex molecules. It is supplied by Tech Serve Solutions with an assay of 96%.

Organic Synthesis Reagent
S-tert-Butyl chlorothioformate serves as a key building block in organic synthesis. It is employed to introduce the tert-butylthiocarbonyl moiety into various organic structures, enabling the construction of more complex molecules.
Intermediate in Chemical Research
This compound functions as a valuable intermediate in chemical research and development. Its reactivity allows chemists to explore novel synthetic pathways and develop new chemical entities.
Thiol Ester Synthesis
As a chlorothioformate, it is instrumental in the synthesis of thiol esters. These functional groups are important in various chemical and biological contexts, making this reagent useful for their preparation.
| Molecular weight | 152.64 |
|---|---|
| Linear formula | (CH3)3CSCOCl |
| Assay | 96% |
| Boiling point | 32 °C/5 mmHg |
| Density | 0.967 g/mL at 25 °C |
| Refractive index | n20/D 1.4727 |


Hazard statements
- H226Flammable liquid and vapour
- 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 | 33 °C / 91.4 °F |
| Transport (UN / ADR) | UN 2924 8(3) / PGIII |
| Water hazard class (WGK, DE) | 3 |
| Hazard codes (EU) | C |
| Risk statements (R) | 10-35 |
| 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 S-tert-Butyl chlorothioformate used for?
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S-tert-Butyl chlorothioformate is primarily used as a building block and intermediate in organic synthesis for introducing the tert-butylthiocarbonyl group into molecules.
What is the CAS number and formula for S-tert-Butyl chlorothioformate?
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The CAS number for S-tert-Butyl chlorothioformate is 13889-95-7 and its linear formula is (CH3)3CSCOCl.
What grade and purity does Tech Serve Solutions supply for S-tert-Butyl chlorothioformate?
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Tech Serve Solutions supplies S-tert-Butyl chlorothioformate with an assay of 96%. We do not represent this product as USP, BP, EP, or any pharmacopoeia grade.
How should S-tert-Butyl chlorothioformate be handled safely?
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S-tert-Butyl chlorothioformate is a flammable liquid and causes severe skin burns and eye damage (H226-H314). Handle with appropriate personal protective equipment, including gloves, goggles, and a faceshield or full-face respirator, in a well-ventilated area. Refer to the Safety Data Sheet for detailed handling procedures.
How is S-tert-Butyl chlorothioformate packed and shipped?
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S-tert-Butyl chlorothioformate is packed and shipped according to international regulations for hazardous materials, including UN 2924, Hazard Class 8(3), Packing Group III.
How can I request a quote or sample for S-tert-Butyl chlorothioformate?
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To request a quote or sample of S-tert-Butyl chlorothioformate, please contact our sales department through the website or by phone, providing your specific requirements.
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