4-Phenylurazole
4-Phenylurazole (CAS: 15988-11-1) is a heterocyclic organic compound with the molecular formula C8H7N3O2 and a molecular weight of 177.16 g/mol. It is a derivative of urazole. This compound serves as a valuable building block in chemical synthesis, particularly within the field of heterocyclic chemistry. Its structure lends itself to various organic reactions for the development of complex molecules.
- IUPAC
- 4-Phenyl-1,2,4-triazolidine-3,5-dione
- Synonyms
- 4-Phenyl-1,2,4-triazolidine-3,5-dione

Organic Synthesis
4-Phenylurazole is utilised as a key intermediate in the synthesis of more complex organic molecules. Its reactive sites allow for diverse chemical transformations, making it a versatile component in multi-step synthetic routes.
Heterocyclic Chemistry
As a triazole derivative, this compound is employed in the study and synthesis of novel heterocyclic systems. It can be incorporated into structures to impart specific chemical or physical properties.
Research and Development
Researchers in academic and industrial laboratories use 4-Phenylurazole for exploring new chemical reactions and developing new chemical entities. Its availability supports innovation in medicinal chemistry and materials science.
| Molecular weight | 177.16 |
|---|---|
| Empirical formula | C8H7N3O2 |
| Assay | 98% |
| Melting point | 207-209 °C(lit.) |
| Protective equipment | Eyeshields, Gloves, type N95 (US), type P1 (EN143) respirator filter |
|---|---|
| Water hazard class (WGK, DE) | 3 |
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-Phenylurazole used for?
+
4-Phenylurazole is used as a building block in organic synthesis, particularly within heterocyclic chemistry, and for general research and development purposes.
What is the CAS number and chemical formula for 4-Phenylurazole?
+
The CAS number for 4-Phenylurazole is 15988-11-1, and its chemical formula is C8H7N3O2.
What grade and purity does Tech Serve Solutions supply?
+
Tech Serve Solutions supplies 4-Phenylurazole with an assay of 98%. This product is suitable for research and technical applications; it is not supplied as USP, BP, or EP grade.
How should 4-Phenylurazole be handled safely?
+
When handling 4-Phenylurazole, it is essential to wear appropriate personal protective equipment, including eyeshields and gloves. A type N95 (US) or type P1 (EN143) respirator filter is recommended. Refer to the Safety Data Sheet for comprehensive handling instructions.
Is 4-Phenylurazole a controlled substance?
+
The provided data does not indicate that 4-Phenylurazole is a controlled substance.
How is 4-Phenylurazole packed and shipped?
+
Tech Serve Solutions ensures secure and compliant packing for export of chemicals. Specific packaging details will be provided upon inquiry.
How can I request a quote or sample of 4-Phenylurazole?
+
To request a quote or sample, please contact the TSS sales team through our website or by phone. Our team will assist you with your requirements.
▶ Related products

1-(2-Fluorobenzyl)piperazine
C11H15FN2
Chemical Synthesis
1-(2-Fluorophenyl)biguanide hydrochloride
Chemical Synthesis

1-(2-Fluorophenyl)cyclopropanecarboxylic acid
C10H9FO2
Chemical Synthesis
1-(2-Fluorophenyl)piperazine
C10H13FN2
Chemical Synthesis
1-(2-Fluorophenyl)piperazine monohydrochloride
C10H13FN2 · HCl
Chemical Synthesis
1-(2-Furoyl)-1H-benzotriazole
C11H7N3O2
Chemical Synthesis
1-(2-Furoyl)piperazine
C9H12N2O2
Chemical Synthesis
1-(2-Hydroxy-5-methylphenyl)-3-phenyl-1,3-propanedione
Chemical Synthesis
▶ Explore more

3-Methyl-1,5-di-p-tolyl-1,4-pentazadiene
Chemical Synthesis

3-Methyl-1,5-pentanediol
Chemical Synthesis

3-Methyl-1-(2-methylphenyl)-1H-pyrazol-5-amine
C11H13N3
Chemical Synthesis
3-Methyl-1-(3′-sulfoamidophenyl)-5-pyrazolone
C10H11N3O3S
Chemical Synthesis