5-Methyl-3-phenylisoxazole-4-carboxylic acid
5-Methyl-3-phenylisoxazole-4-carboxylic acid (CAS: 1136-45-4; C11H9NO3) is a heterocyclic organic compound with a molecular weight of 203.19 g/mol. This white to off-white solid, typically supplied at 99% purity, serves as a valuable building block in organic synthesis. Its applications are primarily within chemical research and development, particularly in the creation of novel heterocyclic compounds and pharmaceutical intermediates.
Preparation of Pharmaceutical Intermediates
This compound has been utilised in the synthesis of intermediates for penicillin production, contributing to the development of important therapeutic agents.
Acylation in Solid-Phase Synthesis
It is employed for acylation reactions during solid-phase synthesis, facilitating the construction of isoxazolopyridone derivatives.
Heterocyclic Chemistry Research
As a functionalised isoxazole, it is a useful synthon for researchers exploring new heterocyclic structures and their potential applications.
| Molecular weight | 203.19 |
|---|---|
| Empirical formula | C11H9NO3 |
| Assay | 99% |
| Application | 5-Methyl-3-phenylisoxazole-4-carboxylic acid was used in preparation of intermediates for the synthesis of penicillin1. It was used for acylation during solid support synthesis of the isoxazolopyridone derivatives2. |
| Melting point | 192-194 °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 5-Methyl-3-phenylisoxazole-4-carboxylic acid used for?
+
5-Methyl-3-phenylisoxazole-4-carboxylic acid is used as a building block in organic synthesis, notably in the preparation of intermediates for penicillin and for acylation during the solid-phase synthesis of isoxazolopyridone derivatives.
What is the CAS number and molecular formula for 5-Methyl-3-phenylisoxazole-4-carboxylic acid?
+
The CAS number is 1136-45-4 and the molecular formula is C11H9NO3.
What grade and purity does Tech Serve Solutions supply?
+
Tech Serve Solutions supplies 5-Methyl-3-phenylisoxazole-4-carboxylic acid at an assay of 99%. TSS does not represent this product as USP, BP, or EP grade.
What are the safety and handling recommendations for 5-Methyl-3-phenylisoxazole-4-carboxylic acid?
+
Handling requires appropriate personal protective equipment including eyeshields and gloves. A type N95 (US) or type P1 (EN143) respirator filter is recommended. The compound is classified under WGK Germany 3, indicating it is hazardous to water.
How is 5-Methyl-3-phenylisoxazole-4-carboxylic acid typically packaged and exported?
+
As a global supplier, Tech Serve Solutions exports fine chemicals and reagents worldwide. Specific packaging details for 5-Methyl-3-phenylisoxazole-4-carboxylic acid comply with international shipping regulations for chemical products.
How can I request a sample or quote for 5-Methyl-3-phenylisoxazole-4-carboxylic acid?
+
Please use the contact form or contact details provided on the Tech Serve Solutions website to request a sample or a quotation for 5-Methyl-3-phenylisoxazole-4-carboxylic acid.
▶ 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