Valencene

Valencene is a sesquiterpene that is an aroma component of citrus fruit and citrus-derived odorants. It is obtained inexpensively from Valencia oranges.[1] Valencene is biosynthesized from farnesyl pyrophosphate (FPP) by the CVS enzyme.

Valencene

Names
IUPAC name (3R,4aS,5R)-4a,5-Dimethyl-3-(prop-1-en-2-yl)-1,2,3,4,4a,5,6,7-octahydronaphthalene
Identifiers
CAS Number	4630-07-3 Y
3D model (JSmol)	Interactive image
ChEBI	CHEBI:61700 Y
ChemSpider	8031495 Y
ECHA InfoCard	100.022.770
PubChem CID	9855795
UNII	96H21P91IG Y
CompTox Dashboard (EPA)	DTXSID8047052
InChI InChI=1S/C15H24/c1-11(2)13-8-9-14-7-5-6-12(3)15(14,4)10-13/h7,12-13H,1,5-6,8-10H2,2-4H3/t12-,13-,15+/m1/s1 Y Key: QEBNYNLSCGVZOH-NFAWXSAZSA-N Y InChI=1/C15H24/c1-11(2)13-8-9-14-7-5-6-12(3)15(14,4)10-13/h7,12-13H,1,5-6,8-10H2,2-4H3/t12-,13-,15+/m1/s1 Key: QEBNYNLSCGVZOH-NFAWXSAZBT
SMILES C\12=C\CC[C@H]([C@@]/1(C[C@H](\C(=C)C)CC2)C)C
Properties
Chemical formula	C15H24
Molar mass	204.357 g·mol−1
Boiling point	123 °C (253 °F; 396 K) at 11 mmHg
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
Y verify (what is YN ?)
Infobox references

It is a precursor to nootkatone, the main contributor to the aroma and flavor of grapefruit.[2]