Undecanal

Undecanal, also known as undecyl aldehyde, is an organic compound with the chemical formula C₁₀H₂₁CHO. It is an eleven-carbon aldehyde. A colourless, oily liquid, undecanal is a component of perfumes. Although it occurs naturally in citrus oils, it is produced commercially by hydroformylation of decene.^[1]

Quick facts Names, Identifiers ...

Undecanal

Names
Preferred IUPAC name Undecanal
Other names Undecyl aldehyde
Identifiers
CAS Number	112-44-7
3D model (JSmol)	Interactive image
ChEBI	CHEBI:46202 Y
ChemSpider	7894
DrugBank	DB04093
ECHA InfoCard	100.003.611
EC Number	203-972-6
PubChem CID	8186
UNII	B6P0A9PSHN
CompTox Dashboard (EPA)	DTXSID4021688
InChI InChI=1S/C11H22O/c1-2-3-4-5-6-7-8-9-10-11-12/h11H,2-10H2,1H3 Key: KMPQYAYAQWNLME-UHFFFAOYSA-N InChI=1/C11H22O/c1-2-3-4-5-6-7-8-9-10-11-12/h11H,2-10H2,1H3 Key: KMPQYAYAQWNLME-UHFFFAOYAE
SMILES O=CCCCCCCCCCC
Properties
Chemical formula	C11H22O
Molar mass	170.296 g·mol−1
Appearance	colourless oil
Density	0.825 g cm−3
Melting point	−2 °C (28 °F; 271 K)
Boiling point	225 °C (437 °F; 498 K)
Hazards
GHS labelling:
Pictograms
Signal word	Warning
Hazard statements	H315, H412
Precautionary statements	P264, P273, P280, P302+P352, P321, P332+P313, P362, P501
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). Infobox references

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It has been registered under the EU REACH scheme at >1000 tonnes by Oxea, which confirms the status as irritant.^[2]

Undecanal is used in the synthesis of Disparlure.^[3]