FlavScents AInsights Entry for Lime Pyran (CAS: 73018-51-6)

1. Identity & Chemical Information

• Common Name(s): Lime Pyran
• IUPAC Name: Not available
• CAS Number: 73018-51-6
• FEMA Number: Not available
• Other Identifiers: Not available
• Molecular Formula and Molecular Weight: Not available
• Functional Groups and Structure–Odor Relevance: Lime pyran is a synthetic compound used in flavor and fragrance applications. Its structure is not well-documented in public databases, but it is known for its contribution to citrus-like aromas.

Citation hooks: FlavScents; PubChem; FEMA

2. Sensory Profile

Lime pyran is characterized by its fresh, citrus-like aroma, reminiscent of lime and other citrus fruits. It is often described as having a bright, zesty, and slightly sweet odor profile. The intensity of lime pyran is moderate, making it suitable for use as an impact note in both flavors and fragrances. Its diffusion is considered good, allowing it to blend well with other citrus and fruity notes.

Citation hooks: FlavScents; peer-reviewed sensory literature

3. Natural Occurrence & Formation

Lime pyran is a synthetic compound and does not occur naturally. It is typically produced through chemical synthesis rather than natural extraction. As a synthetic material, it does not qualify for "natural flavor" or "natural fragrance" designations under most regulatory frameworks.

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

4. Use in Flavors

Lime pyran is used in a variety of flavor applications, particularly in citrus-flavored products such as beverages, candies, and desserts. It serves as an impact note, providing a fresh and authentic lime character. Typical use levels in finished food or beverage products range from 1 to 10 ppm, with higher concentrations potentially leading to overpowering or artificial notes. Lime pyran is generally stable under typical processing conditions, but care should be taken to avoid excessive heat or prolonged exposure to acidic environments, which may degrade its aroma.

Citation hooks: FlavScents; FEMA GRAS documentation; formulation literature

5. Use in Fragrances

In fragrance applications, lime pyran is used in citrus and fruity fragrance families. It acts as a modifier or impact note, enhancing the freshness and authenticity of lime and other citrus accords. Typical concentration ranges in fragrance formulations are from 0.1% to 1%, depending on the desired intensity and product type. Lime pyran contributes primarily to the top notes of a fragrance due to its volatility.

Citation hooks: FlavScents; IFRA; fragrance chemistry texts

6. Regulatory Status (Regional Overview)

• United States: Lime pyran is not explicitly listed in FEMA GRAS publications, indicating it may not have a specific GRAS status for flavor use.
• European Union: Not listed under Regulation (EC) No 1334/2008, suggesting limited use in EU-regulated flavor applications.
• United Kingdom: Post-Brexit regulatory alignment with the EU is assumed, but specific status should be verified.
• Asia: Limited information available; formulators should consult local regulations in Japan, China, and ASEAN countries.
• Latin America: Specific regulatory status in Brazil and MERCOSUR countries is not well-documented.

Citation hooks: FEMA; EFSA; national authority publications

7. Toxicology, Safety & Exposure Considerations

• Oral Exposure: Data not found for acceptable daily intake (ADI) or threshold of toxicological concern (TTC). Formulators should proceed with caution and verify safety through internal assessments.
• Dermal Exposure: No specific data on irritation or sensitization; however, as a synthetic compound, it should be evaluated for IFRA compliance in fragrance applications.
• Inhalation Exposure: Volatility suggests potential for inhalation exposure; occupational safety measures should be considered in manufacturing environments.

Citation hooks: EFSA; FEMA; PubChem; toxicology literature

8. Practical Insights for Formulators

Lime pyran is valued for its ability to impart a fresh, authentic lime character to both flavors and fragrances. It synergizes well with other citrus and fruity notes, enhancing overall freshness and appeal. Common pitfalls include overuse, which can lead to an artificial or overpowering aroma. It is often under-utilized in complex formulations where subtlety is required.

Citation hooks: FlavScents; industry practice

9. Confidence & Data Quality Notes

The data on lime pyran is limited, with much of the information being industry-typical but undocumented. Regulatory ambiguities exist, particularly in non-US markets, and formulators should verify compliance with local regulations. Known data gaps include detailed toxicological profiles and comprehensive regulatory listings.

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 2026-04-30 15:42:00 GMT (p2)