Cyclopentadecanolide

Cyclopentadecanolide
Names
	Preferred IUPAC name 1-Oxacyclohexadecan-2-one
	Other names Angelica lactone; Muskalactone; Muskolactone; Exaltolide; Pentalide; Pentadecanolide; Pentadecalactone; 15-Hydroxypentadecanoic acid, lactone; 15-Hydroxypentadecanoic acid-epsilon-lactone; Pentadecanoic acid, 15-hydroxy-, E-lactone; ω-Pentadecalactone; omega-Pentadecalactone; ω-Lactone; 2-Pentadecalone; Pentadecan-15-olide; 1,15-Pentadecanolide
Identifiers
CAS Number	106‐02‐5;
3D model (JSmol)	Interactive image;
ChemSpider	205386;
ECHA InfoCard	100.003.050
EC Number	203‐354‐6;
PubChem CID	235414;
CompTox Dashboard (EPA)	DTXSID6044359 ;
	InChI InChI=1S/C15H28O2/c16-15-13-11-9-7-5-3-1-2-4-6-8-10-12-14-17-15/h1-14H2 Key: FKUPPRZPSYCDRS-UHFFFAOYSA-N; InChI=1/C15H28O2/c16-15-13-11-9-7-5-3-1-2-4-6-8-10-12-14-17-15/h1-14H2 Key: FKUPPRZPSYCDRS-UHFFFAOYAJ;
	SMILES O=C1CCCCCCCCCCCCCCO1;
Properties
Chemical formula	C15H28O2
Molar mass	240.387 g·mol−1
Appearance	Colorless crystals
Odor	Musklike
Density	0.940
Melting point	34 °C (93 °F; 307 K)
Boiling point	98 °C (208 °F; 371 K) at 0.02 Torr
	Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). Infobox references

Cyclopentadecanolide is an organic compound with the formula (CH₂)₁₄CO₂. A colorless solid, it is classified as macrolide lactone. It has some use in perfumery.

Occurrence and production

Cyclopentadecanolide occurs in small quantities in angelica root essential oil and is responsible for its musklike odor.^[3]

Cyclopentadecanolide is produced by ring expansion of cyclotetradecanone. Another synthesis route is the depolymerization of polyesters of 15-hydroxypentadecanoic acid.^[3]

Uses

Cyclopentadecanolide is used as a musklike perfume fixative in fine fragrances and as a flavoring agent.^[4] It is a substitute for the extremely expensive animal musk.^[3]