4,5-Dimethyloxazole - ≥95% , CAS No.20662-83-3

CAS: 20662-83-3 Cat. No.: D693899 Molecular Weight: 97.12 EC Number: 853-563-7 PubChem CID: 30214
AVAILABLE TO ORDER
GRADE & PURITY ≥95%
Storage
Protected from light,Store at -20°C
Shipped In
Ice chest + Ice pads
 ·  off list, applied to all prices below.
Size
Status
Price
Qty
250mg
D693899-250mg
8-12 wks(?) Production requires sourcing of materials. We appreciate your patience and understanding.
$55.90
1g
D693899-1g
8-12 wks(?) Production requires sourcing of materials. We appreciate your patience and understanding.
$153.90
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Why this grade

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

🌡

Storage & shipping

Protected from light,Store at -20°C Ships Ice chest + Ice pads Check lot-specific COA for exact specifications.

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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
Protected from light, Store at -20°C
Shipped In
Ice chest + Ice pads
This product requires cold chain shipping. Ground and other economy services are not available.
Purity
≥95%
Names and Identifiers
Canonical SmilesCC1=C(OC=N1)C
IUPAC Name4,5-dimethyl-1,3-oxazole
InChIKeyYVORRVFKHZLJGZ-UHFFFAOYSA-N
INCHI1S/C5H7NO/c1-4-5(2)7-3-6-4/h3H,1-2H3
Isomeric SMILES CC1=C(OC=N1)C
PubChem CID 30214
Molecular Weight 97.12

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.

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🔬 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
SubclassOxazoles
Intermediate Tree Nodes Not available
Direct Parent4,5-disubstituted oxazoles
Alternative Parents Heteroaromatic compounds  Oxacyclic compounds  Azacyclic compounds  Organopnictogen compounds  Organooxygen compounds  Organonitrogen compounds  Hydrocarbon derivatives  
Molecular FrameworkAromatic heteromonocyclic compounds
Substituents 4,5-disubstituted 1,3-oxazole - Heteroaromatic compound - Oxacycle - Azacycle - Organic nitrogen compound - Organic oxygen compound - Organopnictogen compound - Hydrocarbon derivative - Organooxygen compound - Organonitrogen compound - Aromatic heteromonocyclic compound
DescriptionThis compound belongs to the class of organic compounds known as 4,5-disubstituted oxazoles. These are compounds containing an oxazole ring substituted at positions 4 and 5 only. Oxazole is a five-membered aromatic heterocycle with one oxygen, one nitrogen, and three carbon atoms. Isomers include 1,2-oxazole and 1,3-oxazole.
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.

2 results found

Lot NumberCertificate TypeDateItem
A2609423Certificate of AnalysisNov 29, 2025 D693899
A2609425Certificate of AnalysisNov 29, 2025 D693899
Chemical and Physical Properties
Molecular Weight97.120 g/mol
XLogP31.100
Hydrogen Bond Donor Count0
Hydrogen Bond Acceptor Count2
Rotatable Bond Count0
Exact Mass97.0528 Da
Monoisotopic Mass97.0528 Da
Topological Polar Surface Area26.000 Ų
Heavy Atom Count7
Formal Charge0
Complexity65.099
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
Documents & Articles
Solution Calculators
Reviews

Customer Reviews

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