Ethyl 5-methylisoxazole-4-carboxylate - ≥98% , CAS No.51135-73-0

CAS: 51135-73-0 Cat. No.: E341121 Molecular Weight: 155.15 EC Number: 625-158-3
AVAILABLE TO ORDER
GRADE & PURITY ≥98%
Synonyms
FT-0626134 | AS-15629 | Ethyl 5-methylisoxazole-4-carboxylate, 97% | F1907-2310 | SY062282 | Ethyl 5-methyl-4-isoxazolecarboxylate | SCHEMBL3884597 | AKOS005255272 | KOMSQTMQKWSQDW-UHFFFAOYSA-N | AM62636 | 4-Isoxazolecarboxylic acid, 5-methyl-, ethyl este
Storage
Room temperature
Shipped In
Normal
 ·  off list, applied to all prices below.
Size
Status
Price
Qty
1g
E341121-1g
5

$9.90

$12.90
Save $3.00 (23.26%)
5g
E341121-5g
5

$35.90

$48.90
Save $13.00 (26.58%)
25g
E341121-25g
5

$147.90

$218.90
Save $71.00 (32.43%)
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Why this grade

≥98% for sensitive chromatographic and analytical workflows requiring minimal baseline interference.

🌡

Storage & shipping

Room temperature Ships Normal 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

Synonyms
FT-0626134 | AS-15629 | Ethyl 5-methylisoxazole-4-carboxylate, 97% | F1907-2310 | SY062282 | Ethyl 5-methyl-4-isoxazolecarboxylate | SCHEMBL3884597 | AKOS005255272 | KOMSQTMQKWSQDW-UHFFFAOYSA-N | AM62636 | 4-Isoxazolecarboxylic acid, 5-methyl-, ethyl este
Specifications & Purity
≥98%
Storage
Room temperature
Shipped In
Normal
Purity
≥98%
Names and Identifiers
Pubchem Sid488195985
Canonical SmilesCCOC(=O)C1=C(ON=C1)C
IUPAC Nameethyl 5-methyl-1,2-oxazole-4-carboxylate
InChIKeyKOMSQTMQKWSQDW-UHFFFAOYSA-N
INCHI1S/C7H9NO3/c1-3-10-7(9)6-4-8-11-5(6)2/h4H,3H2,1-2H3
Isomeric SMILES CCOC(=O)C1=C(ON=C1)C
Molecular Weight 155.15
Reaxy-Rn 122097
Reaxys-RN_link_address https://www.reaxys.com/reaxys/secured/hopinto.do?context=S&query=IDE.XRN=122097&ln=

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.

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📊 Datasheet

Quick-reference summary of product specifications and applications.

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🔬 Specification Sheet

Full quality attributes and acceptance criteria for this grade.

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Advanced Data

Taxonomic Classification

Taxonomy Tree

KingdomOrganic compounds
SuperclassOrganoheterocyclic compounds
ClassAzoles
SubclassIsoxazoles
Intermediate Tree Nodes Not available
Direct ParentIsoxazoles
Alternative Parents Heteroaromatic compounds  Carboxylic acid esters  Oxacyclic compounds  Monocarboxylic acids and derivatives  Azacyclic compounds  Organopnictogen compounds  Organooxygen compounds  Organonitrogen compounds  Organic oxides  Hydrocarbon derivatives  
Molecular FrameworkAromatic heteromonocyclic compounds
Substituents Heteroaromatic compound - Isoxazole - Carboxylic acid ester - Oxacycle - Azacycle - Monocarboxylic acid or derivatives - 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.

6 results found

Lot NumberCertificate TypeDateItem
C2317888Certificate of AnalysisJan 19, 2026 E341121
C2317896Certificate of AnalysisJan 19, 2026 E341121
C2317908Certificate of AnalysisJan 19, 2026 E341121
C2317932Certificate of AnalysisJan 19, 2026 E341121
C2317949Certificate of AnalysisJan 19, 2026 E341121
C2317953Certificate of AnalysisJan 19, 2026 E341121
Chemical and Physical Properties
Refractive Indexn20/D 1.460
Molecular Weight155.150 g/mol
XLogP31.000
Hydrogen Bond Donor Count0
Hydrogen Bond Acceptor Count4
Rotatable Bond Count3
Exact Mass155.058 Da
Monoisotopic Mass155.058 Da
Topological Polar Surface Area52.300 Ų
Heavy Atom Count11
Formal Charge0
Complexity149.000
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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