Calone

Calone

Names
IUPAC name 7-Methylbenzo[b][1,4]dioxepin-3-one
Other names Calone 1951; Watermelon ketone; Methylbenzodioxepinone
Identifiers
CAS Number	28940-11-6
3D model (Jmol)	Interactive image
ChemSpider	107218
ECHA InfoCard	100.044.823
PubChem	120101
InChI InChI=1/C10H10O3/c1-7-2-3-9-10(4-7)13-6-8(11)5-12-9/h2-4H,5-6H2,1H3 Key: SWUIQEBPZIHZQS-UHFFFAOYAC
SMILES O=C1COc2c(OC1)cc(cc2)C
Properties
Chemical formula	C10H10O3
Molar mass	178.19 g·mol−1
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
Infobox references

Calone or methylbenzodioxepinone, trade-named Calone 1951, also known in the industry as "watermelon ketone", was discovered by Pfizer in 1966. It is used to give the olfactory impression of a fresh seashore through the marine and ozone nuances. Calone is similar in structure of certain alicyclic C11-hydrocarbons like ectocarpene, excreted by some species of brown algae as pheromones.

Calone is an unusual odorant which has an intense "sea-breeze" note with slight floral overtones. It has been used as a scent component since the 1980s for its watery, fresh, ozone accords, and as a more dominant note in several perfumes of the marine trend, beginning in the 1990s.

External links

• Constituents of fragrances
• Watermelon ketone