4,5,6,7,8,9,10,11,12,13-Decahydrocyclododecaoxazole (CAS 38303-23-0) — Citrus Unknown Note Fragrance Ingredient

ByThe Good Scents
Citrus · Floral

4,5,6,7,8,9,10,11,12,13-Decahydrocyclododecaoxazole

CAS 38303-23-0

Origin
synthetic
Note
Unknown
IFRA
Use with awareness
Data as of: Apr 2026

What Is 4,5,6,7,8,9,10,11,12,13-Decahydrocyclododecaoxazole?

4,5,6,7,8,9,10,11,12,13-Decahydrocyclododecaoxazole is a synthetic fragrance compound primarily used in industrial and specialty fragrance applications. Consumers may encounter it in functional products like air fresheners or cleaning agents. This ingredient matters because it represents a class of synthetic molecules designed to create unique olfactory effects that aren’t easily achievable with natural materials.

Safety Profile

USE WITH AWARENESS
Generally safeUse with awarenessProfessional use
⚠ Limited safety data available
⚠ Industrial use primarily
CAS
38303-23-0
Formula
Mixture
MW
Variable
Odor Family
Citrus · Floral
Layer 1 · Enthusiast

What Does 4,5,6,7,8,9,10,11,12,13-Decahydrocyclododecaoxazole Smell Like?

No specific odor description available for this obscure synthetic compound. As a cyclododecaoxazole derivative, it likely possesses complex molecular characteristics that could translate to nuanced olfactory properties, potentially exhibiting woody, musky, or ozonic notes with possible heterocyclic nuances. The exact olfactory profile remains undocumented in public literature.

Layer 2

2D Molecular Structure

Cyclododecoxazole, 4,5,6,7,8,9,10,11,12,13-decahydro-

SMILES: C1CCCCCC2=C(CCCC1)OC=N2

Chemistry, Properties & Perfumer Guide

The Chemistry

This compound belongs to the heterocyclic class of oxazole derivatives, specifically a saturated cyclododecaoxazole structure. As a synthetic material, it would typically be produced through specialized organic synthesis routes involving cyclization reactions. The saturated nature suggests greater stability compared to aromatic analogs, while the oxazole ring provides potential for interesting olfactory characteristics.

Physical & Chemical Properties

Boiling PointNot available
DensityNot available

Perfumer Guide

Note Position
Unknown
Volatility
Unknown
Blending
Unknown
ApplicationTypical %RangeNotes
Industrial FragranceUnknownUnknownSpecialty applications

Classic Accords

Tip: Consult manufacturer’s technical data sheet for specific usage guidelines.

Alternatives & Comparisons

Layer 3

Safety, Regulatory & Sustainability

⚠ Regulatory Disclaimer

General reference only. Consult current IFRA Standards Library before formulating.

IFRA Status

No IFRA restrictions currently listed.

RIFM Assessment

No RIFM assessment found.

Sustainability

As a synthetic compound, production would involve petrochemical feedstocks and specialized chemical processes. Environmental impact depends on manufacturing practices and waste management. No specific sustainability data available for this obscure material.

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References

    Data: PubChem (NIH), PubMed, RIFM, IFRA. Last reviewed: Apr 2026.

    Report a data error

    Ingredient Data Sheet

    CAS 38303-23-0

    Physical Properties

    Molecular Weight207.31 g/mol🔬 PubChem
    LogP (Octanol-Water)4.7🔬 PubChem
    Boiling Point263 °C🔬 EPA CompTox
    Vapor Pressure0.0001 mmHg @ 25°C📊 OPERA
    Flash Point131.8 °C🔬 EPA CompTox
    log Kp (skin permeability)-0.628💻 Calculated
    SMILESC1CCCCCC2=C(CCCC1)N=CO2🔬 PubChem

    Volatility & Performance

    Fragrance NoteBase💻 Calculated
    Volatility ClassVery slow💻 Calculated
    Persistence Score8.9 / 5💻 Calculated

    Odor & Flavor

    Functional Groupsaromatic💻 RDKit
    Data Sources & Attribution
    Physical data: PubChem (NIH/NLM), U.S. EPA CompTox Dashboard, EPA OPERA models, RDKit. Odor & flavor: Arctander (Perfume & Flavor Chemicals), Fenaroli's Handbook of Flavor Ingredients, Leffingwell. Thresholds: van Gemert (Compilations of Odour Threshold Values). Regulatory: IFRA Standards 51st, FEMA GRAS. Trade names: Surburg (Common Fragrance & Flavor Materials). All data compiled and cross-referenced for perfumertools.com.

    Physicochemical Properties

    DTXSID: DTXSID9068087

    Physical Properties

    Molecular Weight 207.317 g/mol🔬 EPA CompTox
    Density 0.983 g/cm^3📊 OPERA
    Boiling Point 282.916 °C📊 OPERA
    Melting Point 7.565 °C📊 OPERA
    Flash Point 128.791 °C📊 OPERA
    Refractive Index 1.471 Dimensionless📊 OPERA
    Molar Volume 218.71 cm^3/mol📊 OPERA

    Partition & Solubility

    LogP (Octanol-Water) 4.287 Log10 unitless📊 OPERA
    LogD (pH 5.5) 4.286 Log10 unitless📊 OPERA
    LogD (pH 7.4) 4.287 Log10 unitless📊 OPERA
    LogKoa (Octanol-Air) 7.46 Log10 unitless📊 OPERA
    Water Solubility 0 mol/L📊 OPERA
    Henry's Law Constant 0 atm-m3/mole📊 OPERA

    Transport Properties

    Vapor Pressure 0 mmHg📊 OPERA
    Viscosity 17.838 cP📊 OPERA
    Surface Tension 33.742 dyn/cm📊 OPERA

    Molecular Descriptors

    Topological Polar Surface Area 26.03 Ų💻 Computed
    H-Bond Donors 0 count💻 Computed
    H-Bond Acceptors 2 count💻 Computed
    Rotatable Bonds 0 count💻 Computed
    Aromatic Rings 1 count💻 Computed
    Molar Refractivity 61.1 cm^3/mol📊 OPERA
    Polarizability 24.222 Å^3📊 OPERA

    Data Sources:

    🔬 EPA Experimental data from U.S. EPA CompTox Chemicals Dashboard & CTX APIs. 📊 OPERA Predicted using EPA's OPERA QSAR models. 💻 Computed Calculated from SMILES using RDKit.

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