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5-(4-Methylphenyl)isoxazole-3-carboxylic acid

CAS 33282-21-2C11H9NO3Chemical Synthesis

5-(4-Methylphenyl)isoxazole-3-carboxylic acid (CAS: 33282-21-2) is a heterocyclic organic compound with the molecular formula C11H9NO3 and a molecular weight of 203.19 g/mol. This chemical is primarily utilised as a building block in organic synthesis, particularly within the realm of heterocyclic chemistry. Its structure lends itself to further derivatisation for the development of novel compounds in research and development settings.

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5-(4-Methylphenyl)isoxazole-3-carboxylic acid (C11H9NO3) — chemical structure, CAS 33282-21-2; Chemistry, fine chemical supplied by Tech Serve Solutions
Building BlocksChemical SynthesisHeterocyclic Building BlocksIsoxazoles
01 /Applications

Organic Synthesis Intermediate

Serves as a valuable intermediate in the synthesis of more complex organic molecules. Its isoxazole core and carboxylic acid functionality allow for diverse chemical transformations.

Heterocyclic Chemistry Research

This compound is employed in research laboratories focusing on the synthesis and study of heterocyclic compounds. It can be a precursor for novel chemical entities with potential applications.

Building Block for Novel Materials

Used in the exploration of new materials where the isoxazole moiety may confer specific chemical or physical properties.

02 /Properties
Molecular weight203.19
Empirical formulaC11H9NO3
Assay97%
Melting point184 °C (dec.)(lit.)
03 /Safety & handling
GHS hazard pictogram: Harmful / irritant (GHS07)
Harmful / irritant
GHS hazard pictogram: Health hazard (GHS08)
Health hazard
Danger

Hazard statements

  • H315Causes skin irritation
  • H317May cause an allergic skin reaction
  • H319Causes serious eye irritation
  • H334May cause allergy or asthma symptoms if inhaled
  • H335May cause respiratory irritation

Precautionary statements

  • P261Avoid breathing dust, fume, gas or vapours
  • P280Wear protective gloves, clothing and eye/face protection
  • P305IF IN EYES
  • P342
Protective equipmentdust mask type N95 (US), Eyeshields, Faceshields, Gloves
Water hazard class (WGK, DE)2
Hazard codes (EU)Xn
Risk statements (R)22-36/37/38-42/43
Safety statements (S)26-36-45

Hazard information is provided for guidance. Always consult the product Safety Data Sheet (SDS), available on request, before handling.

04 /Identifiers & registry
CAS number
33282-21-2
MDL number
MFCD04969583
05 /Quality & supply

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.

06 /Frequently asked questions

What is 5-(4-Methylphenyl)isoxazole-3-carboxylic acid used for?

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5-(4-Methylphenyl)isoxazole-3-carboxylic acid is primarily used as a building block in organic synthesis and for research in heterocyclic chemistry.

What are the CAS number and molecular formula for 5-(4-Methylphenyl)isoxazole-3-carboxylic acid?

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The CAS number is 33282-21-2, and the molecular formula is C11H9NO3.

What grade and purity does Tech Serve Solutions supply?

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Tech Serve Solutions supplies 5-(4-Methylphenyl)isoxazole-3-carboxylic acid with an assay of 97%. We do not represent this product as USP, BP, or EP grade.

What are the primary safety hazards associated with this chemical?

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This compound is classified as Danger and carries hazard statements H315 (Causes skin irritation), H317 (May cause an allergic skin reaction), H319 (Causes serious eye irritation), H334 (May cause allergy or asthma symptoms or breathing difficulties if inhaled), and H335 (May cause respiratory irritation).

How is 5-(4-Methylphenyl)isoxazole-3-carboxylic acid typically handled and shipped?

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Handling requires appropriate personal protective equipment including a dust mask (type N95 US), eyeshields, faceshields, and gloves. As a global supplier, TSS exports this chemical in compliance with international shipping regulations.

How can I request a sample or quote?

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To request a sample or a quotation for 5-(4-Methylphenyl)isoxazole-3-carboxylic acid, please contact the TSS sales team via our website or directly by phone.

Need 5-(4-Methylphenyl)isoxazole-3-carboxylic acid in a specific grade or volume?