Description

4-Vinylanisole (CAS No. 637-69-4) is a high-purity aromatic compound with the molecular formula C₉H₁₀O, also known by its IUPAC name 1-ethenyl-4-methoxybenzene. This colorless to pale yellow liquid is widely utilized in organic synthesis, fragrance formulation, and as a key intermediate in pharmaceutical and agrochemical research. Its structure features a reactive vinyl group adjacent to a methoxy-substituted benzene ring, enabling versatile chemical transformations such as polymerization and electrophilic substitution reactions. 4-Vinylanisole is characterized by its mild, sweet, balsamic odor, making it valuable in perfumery. Our product is rigorously tested for purity (typically ≥98% by GC) and is supplied in amber glass bottles under inert gas to ensure stability. Suitable for laboratory and industrial-scale applications, it is stored under cool, dry conditions to prevent polymerization.

Properties

• CAS Number: 637-69-4
• Complexity: 101
• IUPAC Name: 1-methoxy-4-vinyl-benzene
• InChI: InChI=1S/C9H10O/c1-3-8-4-6-9(10-2)7-5-8/h3-7H,1H2,2H3
• InChI Key: UAJRSHJHFRVGMG-UHFFFAOYSA-N
• Exact Mass: 134.073164938
• Molecular Formula: C9H10O
• Molecular Weight: 134.17
• SMILES: COC1=CC=C(C=C1)C=C
• Topological: 9.2
• Monoisotopic Mass: 134.073164938
• Physical Description: Colorless liquid;
• Synonyms: 4-Methoxystyrene, 637-69-4, 4-VINYLANISOLE, 1-ethenyl-4-methoxybenzene, p-Vinylanisole, Anisole, p-vinyl-, NSC 42171, CCRIS 4381, EINECS 211-298-9, NSC 408326, AI3-05526, 2ISH8T4A6E, NSC-42171, NSC-408326, pMethoxystyrene, pVinylanisole, 4methoxystyrene, Anisole, pvinyl, Anisole, pvinyl (8CI), Benzene, 1ethenyl4methoxy, Anisole, p-vinyl-(8CI), 211-298-9, 1-Methoxy-4-vinylbenzene, p-Methoxystyrene, Benzene, 1-ethenyl-4-methoxy-, MFCD00008619, 1-methoxy-4-vinyl-benzene, 4-vinylanisol, p-methoxy-styrene, UNII-2ISH8T4A6E, para-methoxystyrene, 4-vinyl anisole, 4-vinyl-anisole, 4-Vinylanisole, 97%, 1-ethenyl-4-methoxy-benzene, SCHEMBL28436, 1-Methoxy-4-vinylbenzene #, SCHEMBL358691, SCHEMBL852777, SCHEMBL2512328, SCHEMBL4186104, SCHEMBL7200032, DTXSID7073222, SCHEMBL12113789, NSC42171, NSC408326, AKOS009156585, CL-0053, CS-W013377, FM11562, 4-Methoxystyrene (stabilized with TBC), SY012921, M0130, NS00022602, EN300-60992, D71253, Q27254796, Z957339658, 4-Methoxystyrene – stabilized with 0.1% 4-tert-butylcatechol, InChI=1/C9H10O/c1-3-8-4-6-9(10-2)7-5-8/h3-7H,1H2,2H

Application

4-Vinylanisole serves as a critical intermediate in the synthesis of specialty polymers, fragrances, and bioactive compounds. In perfumery, it contributes balsamic and floral notes to fine fragrances and cosmetic formulations. Researchers employ it as a monomer for designing functionalized polystyrene derivatives with tailored properties. Additionally, it is investigated in agrochemical studies for developing novel plant growth regulators and insect attractants.

Safety and Hazards

GHS Hazard Statements

• H227 (50%): Combustible liquid [Warning Flammable liquids]
• H315 (100%): Causes skin irritation [Warning Skin corrosion/irritation]
• H319 (100%): Causes serious eye irritation [Warning Serious eye damage/eye irritation]

Precautionary Statements

• P210, P264, P264+P265, P280, P302+P352, P305+P351+P338, P321, P332+P317, P337+P317, P362+P364, P370+P378, P403, and P501

Hazard Classes and Categories

• Flam. Liq. 4 (50%)
• Skin Irrit. 2 (100%)
• Eye Irrit. 2A (100%)

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Disclaimer: Sold exclusively for laboratory research. Prohibited for commercial use, diagnostics, or human/animal applications. Buyers assume all compliance liability.