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IUPAC name 1-methyl-4-(1-methylethyl)-2,3-
CAS number 512-85-6
Molecular formula C10H16O2
Molar mass 168.23 g/mol
Density 1.0103 g/cm3
Melting point

3.3 °C

Boiling point

39-40 °C at 0.2 mmHg

Except where noted otherwise, data are given for
materials in their standard state
(at 25 °C, 100 kPa)

Infobox disclaimer and references

Ascaridole is a natural organic compound classified as a bicyclic monoterpene that has an unusual bridging peroxide functional group. It is the primary constituent of the oil of chenopodium or Mexican Tea (Chenopodium ambrosioides).[1]

It is a colorless liquid that is soluble in most organic solvents. Like other low molecular weight organic peroxides, it is unstable and prone to explosion when heated or treated with organic acids.[2]

Ascaridole has been used as an anthelmintic for controlling nematodes.


Ascaridole was the first and for a long time only disovered peroxide. The structure was resolved by Otto Wallach in 1912,[2] but the first synthesis was done by Karl Ziegler in 1944.[3] The synthesis started from α-Terpinene which reacts with oxygen under the influence of chlorophyl and light. Under these conditions singlet oxygen is generated which is reacting in a Diels-Alder reaction with the dien system in the Terpinene.


  1. ^ Humphrey Paget (1938). "Chenopodium oil. Part III. Ascaridole". J. Chem. Soc. 392 (1): 829 - 833. doi:10.1039/JR9380000829.
  2. ^ a b O. Wallach (1912). "Zur Kenntnis der Terpene und der ätherischen Öle". Justus Liebig's Annalen der Chemie 392 (1): 49-75. doi:10.1002/jlac.19123920104.
  3. ^ Günther, O. Schenck and K. Ziegler (1944). "Die Synthese des Ascaridols". Naturwissenschaften 32 (14-26): 157. doi:10.1007/BF01467891.
This article is licensed under the GNU Free Documentation License. It uses material from the Wikipedia article "Ascaridole". A list of authors is available in Wikipedia.
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