3-(Diethoxyphosphoryloxy)-1,2,3-benzotriazin-4(3H)-one
3-(Diethoxyphosphoryloxy)-1,2,3-benzotriazin-4(3H)-one (CAS 165534-43-0) is a chemical compound with the molecular formula C11H14N3O5P and a molecular weight of 299.22. This substance primarily functions as a building block in chemical synthesis, particularly within the realm of heterocyclic chemistry and triazine derivatives. Its structured nature makes it a valuable reagent for creating more complex molecules. Tech Serve Solutions supplies this compound for research and development purposes.
- IUPAC
- DEPBT
- Synonyms
- 165534-43-0C11H14N3O5P

Heterocyclic Synthesis
Utilised as a key intermediate in the construction of complex heterocyclic ring systems, including triazine derivatives. Its structure offers specific reactive sites for further chemical elaboration.
Organic Synthesis Reagent
Serves as a valuable building block in general organic synthesis. The compound's functional groups allow for its incorporation into diverse synthetic pathways to create novel chemical entities.
Research and Development
Applied in academic and industrial laboratories for the exploration of new chemical reactions and the development of novel materials or pharmaceutical candidates. Its use is primarily focused on laboratory-scale investigations.
| Molecular weight | 299.22 |
|---|---|
| Empirical formula | C11H14N3O5P |
| Assay | 98% |
| Melting point | 72-75 °C(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) | 26-36 |
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-(Diethoxyphosphoryloxy)-1,2,3-benzotriazin-4(3H)-one used for?
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This compound is primarily used as a building block in chemical synthesis, especially for heterocyclic and triazine derivatives, and in research and development settings.
What is the CAS number and formula for this compound?
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The CAS number is 165534-43-0 and the empirical formula (Hill notation) is C11H14N3O5P.
What grade and purity does Tech Serve Solutions supply?
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Tech Serve Solutions supplies this compound with an assay of 98%. We do not represent this product as USP, BP, EP, or any pharmacopoeia grade.
How should 3-(Diethoxyphosphoryloxy)-1,2,3-benzotriazin-4(3H)-one be handled?
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This compound is a Warning substance (GHS07) and may cause skin irritation (H315), eye irritation (H319), and respiratory irritation (H335). It is recommended to wear eyeshields, gloves, and a dust mask type N95 (US). Avoid breathing dust and ensure good ventilation. For eye contact, rinse cautiously with water for several minutes and remove contact lenses if present and easy to do. Continue rinsing.
Is this chemical shipped internationally?
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Yes, Tech Serve Solutions is a specialist global supplier and exporter of fine chemicals and laboratory reagents.
How can I request a sample or quote?
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Please contact our sales team via the website or telephone to request a sample or a formal quotation for 3-(Diethoxyphosphoryloxy)-1,2,3-benzotriazin-4(3H)-one.
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