5-Ethylisoxazole-3-carboxylic acid - ≥95% , CAS No.52320-59-9

CAS: 52320-59-9 Cat. No.: E709901 Molecular Weight: 141.13 EC Number: 866-053-4 PubChem CID: 6483811
AVAILABLE TO ORDER
GRADE & PURITY ≥95%
Storage
Store at 2-8°C
Shipped In
Wet ice
 ·  off list, applied to all prices below.
Size
Status
Price
Qty
250mg
E709901-250mg
3

$83.90

$125.90
Save $42.00 (33.36%)
1g
E709901-1g
3

$170.90

$256.90
Save $86.00 (33.48%)
5g
E709901-5g
2

$532.90

$799.90
Save $267.00 (33.38%)
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Why this grade

≥95% for sensitive chromatographic and analytical workflows requiring minimal baseline interference.

🌡

Storage & shipping

Store at 2-8°C Ships Wet ice Check lot-specific COA for exact specifications.

📋

Quality documents

SDS, COA, datasheet, and spec sheet available for download. Lot-specific COA accessible via lot number lookup.

📚

Literature proof

Cited in 0 peer-reviewed publications across chromatography, organic synthesis, and cross-coupling reactions.

Specifications

Specifications & Purity
≥95%
Storage
Store at 2-8°C
Shipped In
Wet ice
This product requires cold chain shipping. Ground and other economy services are not available.
Purity
≥95%
Names and Identifiers
Canonical SmilesCCC1=CC(=NO1)C(=O)O
IUPAC Name5-ethyl-1,2-oxazole-3-carboxylic acid
InChIKeyTULZZUANLRGWPM-UHFFFAOYSA-N
INCHI1S/C6H7NO3/c1-2-4-3-5(6(8)9)7-10-4/h3H,2H2,1H3,(H,8,9)
Isomeric SMILES CCC1=CC(=NO1)C(=O)O
PubChem CID 6483811
Molecular Weight 141.13

Documentation

📋 Safety Data Sheet (SDS)

Comprehensive hazard, handling, storage, and regulatory compliance document.

Download SDS →

✅ Certificate of Analysis (COA)

Lot-specific quality data. Enter your lot number to retrieve the exact COA.

Look up COA →

📊 Datasheet

Quick-reference summary of product specifications and applications.

View datasheet →

🔬 Specification Sheet

Full quality attributes and acceptance criteria for this grade.

View spec sheet →

Advanced Data

Taxonomic Classification

Taxonomy Tree

KingdomOrganic compounds
SuperclassOrganoheterocyclic compounds
ClassAzoles
SubclassIsoxazoles
Intermediate Tree Nodes Not available
Direct ParentIsoxazoles
Alternative Parents Heteroaromatic compounds  Oxacyclic compounds  Monocarboxylic acids and derivatives  Carboxylic acids  Azacyclic compounds  Organopnictogen compounds  Organooxygen compounds  Organonitrogen compounds  Organic oxides  Hydrocarbon derivatives  
Molecular FrameworkAromatic heteromonocyclic compounds
Substituents Heteroaromatic compound - Isoxazole - Oxacycle - Azacycle - Monocarboxylic acid or derivatives - Carboxylic acid - Carboxylic acid derivative - Organic nitrogen compound - Organic oxygen compound - Organopnictogen compound - Organic oxide - Hydrocarbon derivative - Organooxygen compound - Organonitrogen compound - Aromatic heteromonocyclic compound
DescriptionThis compound belongs to the class of organic compounds known as isoxazoles. These are heterocyclic organic compounds containing an isoxazole moiety, with a structure characterized by a five-member aromatic ring with one oxygen atom and one nitrogen atom at ring positions 1 and 2, respectively.
External Descriptors Not available
3D Structure
Interactive Chemical Structure Model





Certificates(CoA,COO,BSE/TSE and Analysis Chart)
C of A & Other Certificates(BSE/TSE, COO):
Analytical Chart:

Find and download the COA for your product by matching the lot number on the packaging.

3 results found

Lot NumberCertificate TypeDateItem
J2530457Certificate of AnalysisAug 26, 2025 E709901
J2530463Certificate of AnalysisAug 26, 2025 E709901
J2530464Certificate of AnalysisAug 26, 2025 E709901
Chemical and Physical Properties
Molecular Weight141.120 g/mol
XLogP31.100
Hydrogen Bond Donor Count1
Hydrogen Bond Acceptor Count4
Rotatable Bond Count2
Exact Mass141.043 Da
Monoisotopic Mass141.043 Da
Topological Polar Surface Area63.300 Ų
Heavy Atom Count10
Formal Charge0
Complexity137.000
Isotope Atom Count0
Defined Atom Stereocenter Count0
Undefined Atom Stereocenter Count0
Defined Bond Stereocenter Count0
Undefined Bond Stereocenter Count0
The total count of all stereochemical bonds0
Covalently-Bonded Unit Count1
Solution Calculators
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