3-(1-Piperazinyl)-1,2-benzisothiazole
3-(1-Piperazinyl)-1,2-benzisothiazole (CAS: 87691-87-0) is a heterocyclic compound with the molecular formula C11H13N3S and a molecular weight of 219.31 g/mol. Supplied by Tech Serve Solutions with an assay of ≥98% (HPLC), this building block is integral to chemical synthesis, particularly in the development of novel heterocyclic compounds. Its structure makes it a valuable intermediate for research and development in various chemical applications.
- IUPAC
- 3-Piperazin-1-yl-benzo[d]isothiazole
- Synonyms
- 3-Piperazin-1-yl-benzo[d]isothiazole

Chemical Synthesis Intermediate
Utilised as a key building block in organic synthesis, 3-(1-Piperazinyl)-1,2-benzisothiazole facilitates the construction of complex molecular architectures. Its functional groups allow for diverse chemical transformations.
Heterocyclic Compound Development
This compound serves as a scaffold for the synthesis of novel heterocyclic derivatives. Researchers leverage its structure to explore new chemical entities with potential applications in materials science and medicinal chemistry.
Pharmaceutical Research
As a piperazine-containing benzisothiazole, it may find application in the early stages of pharmaceutical research as an intermediate for drug discovery programs. Its unique structure can be a starting point for lead compound development.
| Molecular weight | 219.31 |
|---|---|
| Empirical formula | C11H13N3S |
| Assay | ≥98% (HPLC) |
| Storage temperature | 2-8°C |

Hazard statements
- H301Toxic if swallowed
- H315Causes skin irritation
- H319Causes serious eye irritation
Precautionary statements
- P301IF SWALLOWED
- P305IF IN EYES
| Transport (UN / ADR) | UN 2811 6.1 / PGIII |
|---|---|
| Water hazard class (WGK, DE) | 3 |
| Hazard codes (EU) | T |
| Risk statements (R) | 25-36/38 |
| Safety statements (S) | 26-45 |
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 3-(1-Piperazinyl)-1,2-benzisothiazole used for?
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3-(1-Piperazinyl)-1,2-benzisothiazole is primarily used as a building block in chemical synthesis and for the development of novel heterocyclic compounds in research settings.
What is the CAS number and formula for 3-(1-Piperazinyl)-1,2-benzisothiazole?
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The CAS number is 87691-87-0 and the empirical formula is C11H13N3S.
What grade and purity does Tech Serve Solutions supply?
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Tech Serve Solutions supplies 3-(1-Piperazinyl)-1,2-benzisothiazole with a purity of ≥98% (HPLC). This product is intended for research and chemical synthesis purposes and is not supplied as USP, BP, EP, or pharmaceutical grade.
How should 3-(1-Piperazinyl)-1,2-benzisothiazole be handled?
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This compound is classified as toxic if swallowed and causes skin and serious eye irritation (H301-H315-H319). Handle with appropriate personal protective equipment in a well-ventilated area. Refer to the Safety Data Sheet for detailed handling and emergency procedures.
How is 3-(1-Piperazinyl)-1,2-benzisothiazole packaged and shipped?
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The compound is typically packaged securely for transport and is suitable for export. Specific packaging details can be provided upon request. It is shipped under UN 2811, Hazard Class 6.1, Packing Group III.
How can I request a quote or sample?
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To request a quote or a sample of 3-(1-Piperazinyl)-1,2-benzisothiazole, please contact the Tech Serve Solutions sales team through our website or direct inquiry channels.
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