5-Ethylidene-2-norbornene - ≥98%(GC), stabilized with BHT , CAS No.16219-75-3

CAS: 16219-75-3 Cat. No.: E156238 Molecular Weight: 120.2 EC Number: 240-347-7
AVAILABLE TO ORDER
GRADE & PURITY ≥98%(GC) stabilized with BHT
Synonyms
ENB | ethylidene-norbornene | 5-ethylidene 2-norbornene | DTXSID1025306 | FT-0690475 | OJOWICOBYCXEKR-UHFFFAOYSA-N | 5-ETHYLIDENE-2-NORBORNENE | AKOS028109999 | Ethylidene-2-norbornene | 5-ethylidenebicy-clo[2.2.1]hept-2-ene
Storage
Argon charged,Room temperature
Shipped In
Normal
 ·  off list, applied to all prices below.
Size
Status
Price
Qty
25ml
E156238-25ml
2
$17.90
100ml
E156238-100ml
2
$41.90
500ml
E156238-500ml
7
$98.90
Enter a quantity for the sizes you want to add.
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Why this grade

≥98%(GC), stabilized with BHT for sensitive chromatographic and analytical workflows requiring minimal baseline interference.

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Storage & shipping

Argon charged,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 23 peer-reviewed publications across chromatography, organic synthesis, and cross-coupling reactions.

Specifications

Synonyms
ENB | ethylidene-norbornene | 5-ethylidene 2-norbornene | DTXSID1025306 | FT-0690475 | OJOWICOBYCXEKR-UHFFFAOYSA-N | 5-ETHYLIDENE-2-NORBORNENE | AKOS028109999 | Ethylidene-2-norbornene | 5-ethylidenebicy-clo[2.2.1]hept-2-ene
Specifications & Purity
≥98%(GC), stabilized with BHT
Storage
Argon charged, Room temperature
Shipped In
Normal
Purity
≥98%(GC)
Names and Identifiers
Pubchem Sid504753365
Pubchem Sid Urlhttps://pubchem.ncbi.nlm.nih.gov/substance/504753365
Canonical SmilesCC=C1CC2CC1C=C2
IUPAC Name5-ethylidenebicyclo[2.2.1]hept-2-ene
InChIKeyOJOWICOBYCXEKR-UHFFFAOYSA-N
INCHI1S/C9H12/c1-2-8-5-7-3-4-9(8)6-7/h2-4,7,9H,5-6H2,1H3
Isomeric SMILES CC=C1CC2CC1C=C2
WGK Germany 2
RTECS RB9450000
UN Number 1993
Packing Group I
Molecular Weight 120.2
Reaxy-Rn 2039935
Reaxys-RN_link_address https://www.reaxys.com/reaxys/secured/hopinto.do?context=S&query=IDE.XRN=2039935&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
SuperclassHydrocarbons
ClassUnsaturated hydrocarbons
SubclassBranched unsaturated hydrocarbons
Intermediate Tree Nodes Not available
Direct ParentBranched unsaturated hydrocarbons
Alternative Parents Polycyclic hydrocarbons  Cyclic olefins  Unsaturated aliphatic hydrocarbons  
Molecular FrameworkAliphatic homopolycyclic compounds
Substituents Branched unsaturated hydrocarbon - Polycyclic hydrocarbon - Cyclic olefin - Unsaturated aliphatic hydrocarbon - Olefin - Aliphatic homopolycyclic compound
DescriptionThis compound belongs to the class of organic compounds known as branched unsaturated hydrocarbons. These are hydrocarbons that contains one or more unsaturated carbon atoms, and an aliphatic branch.
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.

13 results found

Lot NumberCertificate TypeDateItem
A2127115Certificate of AnalysisNov 11, 2024 E156238
A2127113Certificate of AnalysisNov 11, 2024 E156238
A2127114Certificate of AnalysisNov 07, 2024 E156238
G2013171Certificate of AnalysisApr 07, 2024 E156238
A2424165Certificate of AnalysisJan 15, 2024 E156238
A2424167Certificate of AnalysisJan 15, 2024 E156238
A2424168Certificate of AnalysisJan 15, 2024 E156238
A2424169Certificate of AnalysisJan 15, 2024 E156238
A2424170Certificate of AnalysisJan 15, 2024 E156238
A2424171Certificate of AnalysisJan 15, 2024 E156238
A2424172Certificate of AnalysisJan 15, 2024 E156238
C2011161Certificate of AnalysisJan 11, 2024 E156238
B2327164Certificate of AnalysisMar 02, 2023 E156238

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Chemical and Physical Properties
SolubilityInsoluble in water
Sensitivityair sensitive
Refractive Index1.49
Flash Point(°F)82.4 °F
Flash Point(°C)28 °C
Boil Point(°C)146°C
Molecular Weight120.190 g/mol
XLogP32.200
Hydrogen Bond Donor Count0
Hydrogen Bond Acceptor Count0
Rotatable Bond Count0
Exact Mass120.094 Da
Monoisotopic Mass120.094 Da
Topological Polar Surface Area0.000 Ų
Heavy Atom Count9
Formal Charge0
Complexity174.000
Isotope Atom Count0
Defined Atom Stereocenter Count0
Undefined Atom Stereocenter Count2
Defined Bond Stereocenter Count0
Undefined Bond Stereocenter Count1
The total count of all stereochemical bonds1
Covalently-Bonded Unit Count1
Citations of This Product
References
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3. Gao Feifei, Wu Feiyang, Zhang Xianyang, Jiang Bowen, Li Qizhong.  (2022)  The Functionalized UiO-66 Engineering for the Synergistic Enhancement of Mechanical Properties of Polydicyclopentadiene Nanocomposites.  Journal of Inorganic and Organometallic Polymers and Materials,  33  (2): (328-336).  [PMID:] [10.1007/s10904-022-02499-3]
4. Huangfu Fei, Li Wanrong, Yang Zhongqiang, You Jiang, Yang Po.  (2022)  Bulk ring-opening metathesis copolymerization of dicyclopentadiene and 5-ethylidene-2-norbornene: mixing rules, polymerization behaviors and properties.  JOURNAL OF POLYMER RESEARCH,  29  (10): (1-9).  [PMID:] [10.1007/s10965-022-03268-z]
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11. Zhenjie Yuan, Siqi Huang, Wenduo Chen, Dazhi Jiang.  (2024)  Synthesis and characterization of epoxy resin-polydicyclopentadiene interpenetrating polymer networks by UV-initiated simultaneously frontal polymerization.  JOURNAL OF APPLIED POLYMER SCIENCE,  141  (47): (e56268).  [PMID:] [10.1002/app.56268]
12. Wang Ping, Shi Mengting, Ling Jiacheng, Yang Li, Liu Wenxiu, Zhou Yiyang, Xu Jie, Chen Mei, Li Guilin.  (2025)  The construction of a stable physical–chemical multi-crosslinking structure through a simplified FROMP strategy synergistically enhances the flame retardancy and mechanical properties of PDCPD.  Advanced Composites and Hybrid Materials,  (1): (1-14).  [PMID:] [10.1007/s42114-025-01254-9]
13. Zhan Qingyan, Yang Po.  (2024)  Upgrading of thermosets and composites via sequential frontal ring-opening metathesis polymerization and radical reactions.  JOURNAL OF MATERIALS SCIENCE,  59  (18): (7779-7792).  [PMID:] [10.1007/s10853-024-09674-6]
14. Siqi Huang, Zhuangpeng Chen, Wenduo Chen, Dazhi Jiang.  (2025)  Improved Toughness, Flexural Strength, and Dielectric Performances of Epoxy-Dicyclopentadiene Interpenetrating Polymer Networks via Simultaneous Frontal Polymerization.  ACS Applied Polymer Materials,      [PMID:] [10.1021/acsapm.5c01563]
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16. Siqi Huang, Zhuangpeng Chen, Zhijie Feng, Hongchao Zhao, Langlang Ye, Lingkai Weng, Zhixiang Xie, Shenghua Liu, Dazhi Jiang, Wenduo Chen.  (2025)  Frontal Polymerization-Enabled 3D Printing of Recyclable High-Performance Carbon Fiber Reinforced Polymers.  ADVANCED MATERIALS,      [PMID:41194321] [10.1002/adma.202515033]
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