Methyl 1-cyclopentene-1-carboxylate - ≥97% , CAS No.25662-28-6

CAS: 25662-28-6 Cat. No.: M135404 Molecular Weight: 126.15 Beilstein Registry Number: 2040162 EC Number: 805-986-3
AVAILABLE TO ORDER
GRADE & PURITY ≥97%
Synonyms
Cyclopentene-1-carboxylic acid methyl ester | s2783 | Methyl 1-cyclopentenecarboxylate | SW219487-1 | methyl cyclopentene-1-carboxylate;Methyl 1-cyclopentene-1-carboxylate | FT-0675980 | NSC-799351 | AKOS009158575 | STL556569 | 1-Cyclopentene-1-carboxylic
Storage
Store at 2-8°C
Shipped In
Wet ice
 ·  off list, applied to all prices below.
Size
Status
Price
Qty
1g
M135404-1g
3

$9.90

$14.90
Save $5.00 (33.56%)
5g
M135404-5g
3

$15.90

$23.90
Save $8.00 (33.47%)
10g
M135404-10g
1

$29.90

$44.90
Save $15.00 (33.41%)
25g
M135404-25g
3

$67.90

$101.90
Save $34.00 (33.37%)
100g
M135404-100g
2

$270.90

$406.90
Save $136.00 (33.42%)
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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.

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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.

Overview

Product Description:

Methyl 1-cyclopentene-1-carboxylate, a cyclic alkene, is a cyclopentene derivative. It participates in the synthesis of azulene derivatives by initially forming the corresponding cyclopropanol followed by oxy-Cope rearrangement.

Specifications

Synonyms
Cyclopentene-1-carboxylic acid methyl ester | s2783 | Methyl 1-cyclopentenecarboxylate | SW219487-1 | methyl cyclopentene-1-carboxylate;Methyl 1-cyclopentene-1-carboxylate | FT-0675980 | NSC-799351 | AKOS009158575 | STL556569 | 1-Cyclopentene-1-carboxylic
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 Sid504759217
Pubchem Sid Urlhttps://pubchem.ncbi.nlm.nih.gov/substance/504759217
Canonical SmilesCOC(=O)C1=CCCC1
IUPAC Namemethyl cyclopentene-1-carboxylate
InChIKeyVTYCAXIAUKEGBQ-UHFFFAOYSA-N
INCHI1S/C7H10O2/c1-9-7(8)6-4-2-3-5-6/h4H,2-3,5H2,1H3
Isomeric SMILES COC(=O)C1=CCCC1
WGK Germany 3
Molecular Weight 126.15
Beilstein 2040162
Reaxy-Rn 2040162
Reaxys-RN_link_address https://www.reaxys.com/reaxys/secured/hopinto.do?context=S&query=IDE.XRN=2040162&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
SuperclassOrganic acids and derivatives
ClassCarboxylic acids and derivatives
SubclassCarboxylic acid derivatives
Intermediate Tree Nodes Carboxylic acid esters - Alpha,beta-unsaturated carboxylic esters
Direct ParentEnoate esters
Alternative Parents Methyl esters  Monocarboxylic acids and derivatives  Organic oxides  Hydrocarbon derivatives  Carbonyl compounds  
Molecular FrameworkAliphatic homomonocyclic compounds
Substituents Enoate ester - Methyl ester - Monocarboxylic acid or derivatives - Organic oxygen compound - Organic oxide - Hydrocarbon derivative - Organooxygen compound - Carbonyl group - Aliphatic homomonocyclic compound
DescriptionThis compound belongs to the class of organic compounds known as enoate esters. These are an alpha,beta-unsaturated carboxylic ester of general formula R1C(R2)=C(R3)C(=O)OR4 (R4= organyl compound) in which the ester C=O function is conjugated to a C=C double bond at the alpha,beta position.
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.

12 results found

Lot NumberCertificate TypeDateItem
K2219653Certificate of AnalysisJun 15, 2026 M135404
K2219654Certificate of AnalysisJun 15, 2026 M135404
K2219656Certificate of AnalysisJun 15, 2026 M135404
K2219657Certificate of AnalysisJun 15, 2026 M135404
K2507080Certificate of AnalysisNov 19, 2025 M135404
K2506157Certificate of AnalysisNov 10, 2025 M135404
L2418079Certificate of AnalysisDec 28, 2024 M135404
K2113031Certificate of AnalysisAug 04, 2023 M135404
K2113032Certificate of AnalysisAug 04, 2023 M135404
K2113033Certificate of AnalysisAug 04, 2023 M135404
K2113034Certificate of AnalysisAug 04, 2023 M135404
L2418080Certificate of AnalysisAug 04, 2023 M135404

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Chemical and Physical Properties
Refractive Indexn20/D 1.4660
Flash Point(°F)143.6 °F
Flash Point(°C)62 °C
Boil Point(°C)76-78 °C
Molecular Weight126.150 g/mol
XLogP31.500
Hydrogen Bond Donor Count0
Hydrogen Bond Acceptor Count2
Rotatable Bond Count2
Exact Mass126.068 Da
Monoisotopic Mass126.068 Da
Topological Polar Surface Area26.300 Ų
Heavy Atom Count9
Formal Charge0
Complexity147.000
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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