3,4-methylenedioxyphenylpropan-2-one 3,4-methylenedioxyphenylpropan-2-one 3,4-methylenedioxyphenylpropan-2-one or piperonyl methyl ketone (mdp2p or pmk) is a chemical compound consisting of a phenylacetone moiety substituted with a methylenedioxy functional group. it is commonly synthesized from either safrole (which, for comparison, is 3--2-propene) or its isomer isosafrole via oxidation using the wacker oxidation or peroxyacid oxidation methods. mdp2p is unstable at room temperature and must be kept in the freezer in order to be preserved properly. 3,4-methylenedioxyphenylpropan-2-one names preferred iupac name 1-(2h-1,3-benzodioxol-5-yl)propan-2-one other names 3,4-methylenedioxyphenyl-2-propanone1-(1,3-benzodioxol-5-yl)propan-2-onepiperonyl methyl ketone3,4-methylenedioxyphenylacetone identifiers cas number 4676-39-5 y 3d model (jsmol) interactive image abbreviations mdp2p, pmk chemspider 70776 y echa infocard 100.022.843 pubchem cid 78407 unii pna80f81bt y comptox dashboard (epa) dtxsid40196936 inchi inchi=1s/c10h10o3/c1-7(11)4-8-2-3-9-10(5-8)13-6-12-9/h2-3,5h,4,6h2,1h3 ykey: xiykrjltykuwam-uhfffaoysa-n yinchi=1/c10h10o3/c1-7(11)4-8-2-3-9-10(5-8)13-6-12-9/h2-3,5h,4,6h2,1h3key: xiykrjltykuwam-uhfffaoyaa smiles o=c(c)cc1ccc2ococ2c1 properties chemical formula c10h10o3 molar mass 178.185 g/mol appearance yellowish green liquid density 1.211 g/cm3 boiling point 290 °c (554 °f; 563 k) pharmacology legal status us: list i (a precursor) un: precursors table i eu: category 1 precursor except where otherwise noted, data are given for materials in their standard state (at 25 °c , 100 kpa). n verify (what is yn ?) infobox references mdp2p is a precursor in the chemical synthesis of the methylenedioxyphenethylamine (mdxx) class of compounds, the classic example of which is 3,4-methylenedioxy-n-methylamphetamine (mdma), and is also an intermediate between the mdxx family and their slightly more distant precursor safrole or isosafrole. on account of its relation to the mdxx chemical class, mdp2p, as well as safrole and isosafrole, are in the united states (u.s.) drug enforcement administration (dea) list i of chemicals of the controlled substances act (csa) via the chemical diversion and trafficking act (cdta). it is also considered a category 1 precursor in the european union.