4-Hydroxy-2-methylthiazole-5-carboxylic acid ethyl ester - ≥97% , CAS No.20737-48-8

CAS: 20737-48-8 Cat. No.: H182674 Molecular Weight: 187.2 EC Number: 963-199-1
AVAILABLE TO ORDER
GRADE & PURITY ≥97%
Synonyms
4-Hydroxy-2-methyl-thiazole-5-carboxylic acid ethyl ester | 4-Hydroxy-2-methylthiazole-5-carboxylic acid ethyl ester | 5-Thiazolecarboxylic acid, 4-hydroxy-2-methyl-, ethyl ester | AMY1639 | Ethyl4-hydroxy-2-methylthiazole-5-carboxylate | XYSFQGYOGXKLQW-U
Storage
Room temperature
Shipped In
Normal
 ·  off list, applied to all prices below.
Size
Status
Price
Qty
250mg
H182674-250mg
5

$9.90

$14.90
Save $5.00 (33.56%)
1g
H182674-1g
5

$19.90

$29.90
Save $10.00 (33.44%)
5g
H182674-5g
3

$24.90

$37.90
Save $13.00 (34.30%)
10g
H182674-10g
2

$48.90

$73.90
Save $25.00 (33.83%)
25g
H182674-25g
2

$121.90

$182.90
Save $61.00 (33.35%)
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Why this grade

≥97% for sensitive chromatographic and analytical workflows requiring minimal baseline interference.

🌡

Storage & shipping

Room temperature Ships Normal 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.

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Literature proof

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

Specifications

Synonyms
4-Hydroxy-2-methyl-thiazole-5-carboxylic acid ethyl ester | 4-Hydroxy-2-methylthiazole-5-carboxylic acid ethyl ester | 5-Thiazolecarboxylic acid, 4-hydroxy-2-methyl-, ethyl ester | AMY1639 | Ethyl4-hydroxy-2-methylthiazole-5-carboxylate | XYSFQGYOGXKLQW-U
Specifications & Purity
≥97%
Storage
Room temperature
Shipped In
Normal
Purity
≥97%
Names and Identifiers
Pubchem Sid488202992
Canonical SmilesCCOC(=O)C1=C(N=C(S1)C)O
IUPAC Nameethyl 4-hydroxy-2-methyl-1,3-thiazole-5-carboxylate
InChIKeyXYSFQGYOGXKLQW-UHFFFAOYSA-N
INCHI1S/C7H9NO3S/c1-3-11-7(10)5-6(9)8-4(2)12-5/h9H,3H2,1-2H3
Isomeric SMILES CCOC(=O)C1=C(N=C(S1)C)O
Molecular Weight 187.2
Reaxy-Rn 1104471
Reaxys-RN_link_address https://www.reaxys.com/reaxys/secured/hopinto.do?context=S&query=IDE.XRN=1104471&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
SubclassThiazoles
Intermediate Tree Nodes Not available
Direct ParentThiazolecarboxylic acids and derivatives
Alternative Parents 2,4,5-trisubstituted thiazoles  Vinylogous acids  Heteroaromatic compounds  Carboxylic acid esters  Monocarboxylic acids and derivatives  Azacyclic compounds  Organopnictogen compounds  Organooxygen compounds  Organonitrogen compounds  Organic oxides  Hydrocarbon derivatives  
Molecular FrameworkAromatic heteromonocyclic compounds
Substituents 2,4,5-trisubstituted 1,3-thiazole - Thiazolecarboxylic acid or derivatives - Vinylogous acid - Heteroaromatic compound - Carboxylic acid ester - Carboxylic acid derivative - Monocarboxylic acid or derivatives - Azacycle - Organopnictogen compound - Organooxygen compound - Organonitrogen compound - Organic oxygen compound - Organic oxide - Organic nitrogen compound - Hydrocarbon derivative - Aromatic heteromonocyclic compound
DescriptionThis compound belongs to the class of organic compounds known as thiazolecarboxylic acids and derivatives. These are heterocyclic compounds containing a thiazole ring which bears a carboxylic acid group (or a derivative thereof).
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.

10 results found

Lot NumberCertificate TypeDateItem
G2321516Certificate of AnalysisMay 09, 2026 H182674
G2321517Certificate of AnalysisMay 09, 2026 H182674
G2321534Certificate of AnalysisMay 09, 2026 H182674
G2321630Certificate of AnalysisMay 09, 2026 H182674
G2321633Certificate of AnalysisMay 09, 2026 H182674
G2321639Certificate of AnalysisMay 09, 2026 H182674
G2321643Certificate of AnalysisMay 09, 2026 H182674
G2321652Certificate of AnalysisMay 09, 2026 H182674
G2321671Certificate of AnalysisMay 09, 2026 H182674
G2321682Certificate of AnalysisMay 09, 2026 H182674
Chemical and Physical Properties
Molecular Weight187.220 g/mol
XLogP32.400
Hydrogen Bond Donor Count1
Hydrogen Bond Acceptor Count5
Rotatable Bond Count3
Exact Mass187.03 Da
Monoisotopic Mass187.03 Da
Topological Polar Surface Area87.700 Ų
Heavy Atom Count12
Formal Charge0
Complexity176.000
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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