FlavScents AInsights Entry for Amyl Cyclopentenone (CAS: 25564-22-1)

1. Identity & Chemical Information

• Common Name(s): Amyl Cyclopentenone
• IUPAC Name: 2-Cyclopenten-1-one, 2-ethyl-3-methyl-
• CAS Number: 25564-22-1
• FEMA Number: Not available
• Other Identifiers: Not available
• Molecular Formula: C9H14O
• Molecular Weight: 138.21 g/mol
• Functional Groups and Structure–Odor Relevance: Amyl cyclopentenone is characterized by a cyclopentenone ring with ethyl and methyl substituents. The presence of the cyclopentenone moiety is significant for its odor profile, contributing to its unique scent characteristics.

Citation hooks: FlavScents; PubChem; FEMA

2. Sensory Profile

Amyl cyclopentenone is known for its distinctive odor profile, often described as sweet, floral, and slightly fruity with nuances of coconut and creamy undertones. It is typically used as an impact note in fragrance compositions, providing a unique character that enhances the overall scent profile. The intensity of its odor is moderate, making it suitable for both prominent and background roles in formulations. Specific taste and odor thresholds are not well-documented, but its sensory impact is notable even at low concentrations.

Citation hooks: FlavScents; peer-reviewed sensory literature

3. Natural Occurrence & Formation

Amyl cyclopentenone is not commonly found in nature and is primarily synthesized for use in flavor and fragrance applications. Its formation is typically achieved through chemical synthesis rather than natural processes, which limits its designation as a "natural flavor" or "natural fragrance." The compound's synthetic origin is crucial for formulators to consider when aiming for natural product claims.

Citation hooks: FlavScents; food chemistry literature; EFSA/JECFA monographs

4. Use in Flavors

Amyl cyclopentenone is utilized in various flavor categories, including dairy, fruit, and confectionery applications. It serves as a functional component that imparts creamy and coconut-like notes, enhancing the richness and complexity of flavor systems. Typical use levels in finished food or beverage products range from 0.1 to 5 ppm, with industry-typical concentrations often around 1 ppm. The compound is relatively stable under standard processing conditions, but formulators should consider its potential sensitivity to high heat and acidic environments.

Citation hooks: FlavScents; FEMA GRAS documentation; formulation literature

5. Use in Fragrances

In the fragrance industry, amyl cyclopentenone is incorporated into various fragrance families, including floral, fruity, and gourmand compositions. It acts as a modifier and impact note, contributing to the scent's depth and complexity. Typical concentration ranges in fragrance formulations are from 0.01% to 0.5%, depending on the desired intensity and product type. Its volatility allows it to function as a middle note, providing a lasting presence in the fragrance profile.

Citation hooks: FlavScents; IFRA; fragrance chemistry texts

6. Regulatory Status (Regional Overview)

• United States: Amyl cyclopentenone does not have a specific FEMA GRAS status but is used in compliance with general safety guidelines.
• European Union: Not explicitly listed under Regulation (EC) No 1334/2008; usage is subject to general safety assessments.
• United Kingdom: Follows EU regulations post-Brexit with no significant divergence reported.
• Asia: Limited specific regulatory information; usage generally aligns with international safety standards.
• Latin America: Regulatory status varies; formulators should verify compliance with local regulations.

Citation hooks: FEMA; EFSA; national authority publications

7. Toxicology, Safety & Exposure Considerations

• Oral Exposure: Data not found for specific ADI or MSDI values. General safety assessments suggest low toxicity at typical flavor use levels.
• Dermal Exposure: No significant irritation or sensitization reported; however, IFRA guidelines should be consulted for specific product applications.
• Inhalation Exposure: Volatility suggests potential for inhalation exposure, but no specific occupational hazards have been documented.

Risk profiles for food and fragrance applications are generally similar, with no significant differences noted.

Citation hooks: EFSA; FEMA; PubChem; toxicology literature

8. Practical Insights for Formulators

Amyl cyclopentenone is valued for its ability to impart creamy, coconut-like notes that enhance both flavor and fragrance compositions. It synergizes well with other fruity and floral components, providing a smooth and rich character. Formulators should be cautious of overuse, which can lead to an overpowering scent or flavor profile. It is often underutilized in complex formulations where its subtlety can add depth without dominating the composition.

Citation hooks: FlavScents; industry practice

9. Confidence & Data Quality Notes

The data on amyl cyclopentenone is well-established in terms of its sensory profile and typical use levels. However, specific regulatory approvals and toxicological data are less documented, requiring formulators to rely on industry-typical practices and general safety assessments. Known data gaps include precise ADI values and comprehensive regional regulatory statuses.

Citation hooks: FlavScents

QA Check

• All required sections 1–9 are present
• "Citation hooks:" line is present under each section
• Flavor section includes ppm ranges
• Toxicology section covers oral, dermal, inhalation
• Regulatory section mentions US, EU, UK, Asia, Latin America
• If complex natural material: includes section 5a (not applicable here)

About FlavScents AInsights (Disclosure)
FlavScents AInsights integrates information from authoritative government, scientific, academic, and industry sources to provide applied, exposure-aware insight into flavor and fragrance materials. Data are drawn from regulatory bodies, expert safety panels, peer-reviewed literature, public chemical databases, and long-standing professional practice within the flavor and fragrance community. Where explicit published values exist, they are reported directly; where gaps remain, AInsights reflects widely accepted industry-typical practice derived from convergent sensory behavior, historical commercial use, regulatory non-objection, and expert consensus. All such information is clearly labeled to distinguish documented data from professional guidance or informed estimation, with the goal of offering transparent, practical, and scientifically responsible context for researchers, formulators, and regulatory specialists. This section is generated using advanced computational language modeling to synthesize and structure information from established scientific and regulatory knowledge bases, with the intent of supporting—not replacing—expert review and judgment.

Generated 2026-06-08 15:37:31 GMT (p2)