4-(1,2,3,4-Thiatriazol-5-ylamino)phenol hydrate
4-(1,2,3,4-Thiatriazol-5-ylamino)phenol hydrate (CAS 256348-45-5) is a heterocyclic organic compound with the molecular formula C7H6N4OS · xH2O. It is primarily utilised as a building block in chemical synthesis, particularly in the development of novel heterocyclic structures. This compound serves as a valuable reagent for researchers and chemists engaged in organic chemistry, medicinal chemistry, and materials science.
- Synonyms
- 4-Thiatriazol-5-ylamino)phenol hydrate256348-45-5C7H6N4OS · xH2O

Heterocyclic Synthesis
Utilised as a key intermediate for constructing complex heterocyclic molecules. Its unique thiatriazole and phenol functionalities offer versatile reaction pathways.
Medicinal Chemistry Research
Serves as a scaffold or building block in the discovery and development of new pharmaceutical agents. Its structure can be modified to explore various biological activities.
Materials Science
Investigated for potential applications in the development of advanced materials due to its specific chemical structure and properties.
| Molecular weight | 194.21 (anhydrous basis) |
|---|---|
| Empirical formula | C7H6N4OS · xH2O |
| Assay | 95% |
| Melting point | 153 °C (dec.)(lit.) |

Hazard statements
- H315Causes skin irritation
- H319Causes serious eye irritation
- H335May cause respiratory irritation
Precautionary statements
- P261Avoid breathing dust, fume, gas or vapours
- P305IF IN EYES
| Protective equipment | dust mask type N95 (US), Eyeshields, Gloves |
|---|---|
| Water hazard class (WGK, DE) | 3 |
| Hazard codes (EU) | Xi |
| Risk statements (R) | 36/37/38 |
| Safety statements (S) | 26-37/39 |
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 4-(1,2,3,4-Thiatriazol-5-ylamino)phenol hydrate used for?
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This compound is primarily used as a building block in chemical synthesis, particularly for creating heterocyclic structures, and in medicinal chemistry research.
What is the CAS number and molecular formula for this compound?
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The CAS number is 256348-45-5, and the molecular formula is C7H6N4OS · xH2O.
What grade and purity does Tech Serve Solutions supply?
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Tech Serve Solutions supplies this chemical with an assay of 95%. We do not represent it as meeting USP, BP, EP, or any pharmacopoeia standards.
How should 4-(1,2,3,4-Thiatriazol-5-ylamino)phenol hydrate be handled?
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This compound is a warning-hazardous substance causing skin irritation, serious eye irritation, and respiratory irritation (H315-H319-H335). Handle with appropriate personal protective equipment, including a dust mask (type N95 US), eyeshields, and gloves, in a well-ventilated area (P261, P305 + P351 + P338).
Is this chemical a controlled substance?
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Based on the provided data, there is no indication that this chemical is a controlled substance.
How is this chemical packed and exported by TSS?
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Tech Serve Solutions specialises in the global supply and export of fine chemicals. Specific packaging and shipping details are provided upon request to ensure compliance with all relevant regulations.
How can I request a quote or sample?
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Please contact our sales department through the website or direct email to request a quotation or sample for 4-(1,2,3,4-Thiatriazol-5-ylamino)phenol hydrate.
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