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Template:Chembox header| Isosafrole[1]
Chemical name (E)-5-(Prop-1-enyl)benzo[d][1,3]dioxole
Other names 5-(1-Propenyl)-1,3-benzodioxole
Chemical formula C10H10O2
Molecular mass 162.188 g/mol
CAS number trans: [120-58-1]
Density trans: 1.1206 g/cm3
cis: 1.1182 g/cm3
Melting point trans: 8.2 °C
cis: -21.5 °C
Boiling point trans: 253 °C
cis: 77-79 @ 3.5 mmHg
Template:Chembox header | Disclaimer and references

Isosafrole is an aromatic organic chemical with a smell similar to anise or licorice. It is found in small amounts in various essential oils, but is most commonly obtained by isomerizing the plant oil safrole.

It forms two geometric isomers: cis-isosafrole and trans-isosafrole.

Isosafrole is a precursor for MDP2P which is converted into the psychoactive drug MDMA ('ecstasy'). As such requires permits to purchase or sell in any significant quantity in the US.


  1. Merck Index, 11th Edition, 5112.

External links

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