Methyl 3-hydroxy-5-isoxazolecarboxylate
Methyl 3-hydroxy-5-isoxazolecarboxylate (CAS: 10068-07-2; Formula: C5H5NO4; Molar Mass: 143.10) is a versatile heterocyclic organic compound. Its structure, featuring an isoxazole ring with hydroxyl and ester functionalities, makes it a valuable building block in organic synthesis. It is primarily used in research and development for the creation of novel molecules and complex chemical structures, particularly within the pharmaceutical and agrochemical sectors.

Organic Synthesis Intermediate
Serves as a key building block in the synthesis of more complex organic molecules. Its reactive functional groups allow for diverse chemical transformations.
Pharmaceutical Research
Utilised in the development of novel pharmaceutical compounds. The isoxazole core is present in various biologically active molecules.
Agrochemical Development
A precursor in the synthesis of potential agrochemicals, contributing to the development of new crop protection agents.
Material Science
Explored for its potential incorporation into advanced materials due to its heterocyclic structure.
| Molecular weight | 143.10 |
|---|---|
| Empirical formula | C5H5NO4 |
| Assay | 98% |
| Melting point | 160-163 °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 Methyl 3-hydroxy-5-isoxazolecarboxylate used for?
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Methyl 3-hydroxy-5-isoxazolecarboxylate is primarily used as a building block in organic synthesis, particularly in pharmaceutical and agrochemical research and development.
What are the CAS number and formula for Methyl 3-hydroxy-5-isoxazolecarboxylate?
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The CAS number is 10068-07-2 and the empirical formula is C5H5NO4.
What grade and purity does Tech Serve Solutions supply?
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Tech Serve Solutions supplies Methyl 3-hydroxy-5-isoxazolecarboxylate with a minimum assay of 98%. TSS does not represent this product as USP, BP, EP, or any other pharmacopoeia grade.
What are the key safety hazards associated with Methyl 3-hydroxy-5-isoxazolecarboxylate?
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This compound is classified as a GHS07 hazard with the signal word 'Warning'. It causes skin irritation (H315), serious eye irritation (H319), and may cause respiratory irritation (H335). Appropriate personal protective equipment, including a dust mask (type N95), eyeshields, and gloves, should be worn.
How is Methyl 3-hydroxy-5-isoxazolecarboxylate packed and shipped?
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As a specialist global supplier and exporter, Tech Serve Solutions ensures appropriate packaging for safe handling, storage, and international shipment of Methyl 3-hydroxy-5-isoxazolecarboxylate.
How can I request a sample or quote for Methyl 3-hydroxy-5-isoxazolecarboxylate?
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You can request a sample or a quote by contacting our sales team through the methods provided on the Tech Serve Solutions website.
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