5-(4-Methylphenyl)isoxazole-3-carboxylic acid - ≥97% , CAS No.33282-21-2

CAS: 33282-21-2 Cat. No.: M169638 Molecular Weight: 203.19 EC Number: 622-760-8
AVAILABLE TO ORDER
GRADE & PURITY ≥97%
Synonyms
MFCD04969583 | J-019125 | BBL013071 | DTXSID00359585 | EN300-83699 | FT-0698258 | 5-(4-Methylphenyl)isoxazole-3-carboxylic acid | 5-(p-Tolyl)isoxazole-3-carboxylic acid | DDCNRVJWVNUYDO-UHFFFAOYSA-N | 5-(4-METHYLPHENYL)-3-ISOXAZOLECARBOXYLIC ACID | AKOS00
Storage
Store at 2-8°C
Shipped In
Wet ice
 ·  off list, applied to all prices below.
Size
Status
Price
Qty
250mg
M169638-250mg
6

$24.90

$37.90
Save $13.00 (34.30%)
1g
M169638-1g
4

$98.90

$148.90
Save $50.00 (33.58%)
5g
M169638-5g
2

$443.90

$665.90
Save $222.00 (33.34%)
Enter a quantity for the sizes you want to add.
🧪

Why this grade

≥97% 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

Synonyms
MFCD04969583 | J-019125 | BBL013071 | DTXSID00359585 | EN300-83699 | FT-0698258 | 5-(4-Methylphenyl)isoxazole-3-carboxylic acid | 5-(p-Tolyl)isoxazole-3-carboxylic acid | DDCNRVJWVNUYDO-UHFFFAOYSA-N | 5-(4-METHYLPHENYL)-3-ISOXAZOLECARBOXYLIC ACID | AKOS00
Specifications & Purity
≥97%
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
≥97%
Names and Identifiers
Pubchem Sid488191689
Canonical SmilesCC1=CC=C(C=C1)C2=CC(=NO2)C(=O)O
IUPAC Name5-(4-methylphenyl)-1,2-oxazole-3-carboxylic acid
InChIKeyDDCNRVJWVNUYDO-UHFFFAOYSA-N
INCHI1S/C11H9NO3/c1-7-2-4-8(5-3-7)10-6-9(11(13)14)12-15-10/h2-6H,1H3,(H,13,14)
Isomeric SMILES CC1=CC=C(C=C1)C2=CC(=NO2)C(=O)O
WGK Germany 2
Molecular Weight 203.19
Reaxy-Rn 1074797
Reaxys-RN_link_address https://www.reaxys.com/reaxys/secured/hopinto.do?context=S&query=IDE.XRN=1074797&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.

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
SuperclassBenzenoids
ClassBenzene and substituted derivatives
SubclassToluenes
Intermediate Tree Nodes Not available
Direct ParentToluenes
Alternative Parents Isoxazoles  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 Toluene - Azole - Isoxazole - Heteroaromatic compound - Carboxylic acid derivative - Carboxylic acid - Monocarboxylic acid or derivatives - Organoheterocyclic compound - Azacycle - Oxacycle - Organooxygen compound - Organonitrogen compound - Organopnictogen compound - Organic nitrogen compound - Organic oxygen compound - Organic oxide - Hydrocarbon derivative - Aromatic heteromonocyclic compound
DescriptionThis compound belongs to the class of organic compounds known as toluenes. These are compounds containing a benzene ring which bears a methane group.
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
E23061131Certificate of AnalysisFeb 05, 2026 M169638
E23061187Certificate of AnalysisFeb 05, 2026 M169638
E2306555Certificate of AnalysisFeb 05, 2026 M169638
E2306564Certificate of AnalysisFeb 05, 2026 M169638
E2306565Certificate of AnalysisFeb 05, 2026 M169638
E2306567Certificate of AnalysisFeb 05, 2026 M169638
Chemical and Physical Properties
Molecular Weight203.190 g/mol
XLogP32.300
Hydrogen Bond Donor Count1
Hydrogen Bond Acceptor Count4
Rotatable Bond Count2
Exact Mass203.058 Da
Monoisotopic Mass203.058 Da
Topological Polar Surface Area63.300 Ų
Heavy Atom Count15
Formal Charge0
Complexity236.000
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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