meta-dob meta-dob meta-dob, or 5-bromo-2,4-dimethoxyamphetamine, is a lesser-known psychedelic drug. it is similar in structure to dob. meta-dob was first synthesized by alexander shulgin. in his book pihkal (phenethylamines i have known and loved), the dosage range is listed as 50–100 mg, and the duration listed as 5–6 hours. meta-dob produces few to no effects. very little data exists about the pharmacological properties, metabolism, and toxicity of meta-dob. meta-dob names preferred iupac name 1-(5-bromo-2,4-dimethoxyphenyl)propan-2-amine identifiers cas number 60917-67-1 y 3d model (jsmol) interactive image chembl chembl33867 y chemspider 126826 y pubchem cid 143750 unii sy5njh58hc y comptox dashboard (epa) dtxsid30976385 inchi inchi=1s/c11h16brno2/c1-7(13)4-8-5-9(12)11(15-3)6-10(8)14-2/h5-7h,4,13h2,1-3h3 ykey: yfslpsitqiufqk-uhfffaoysa-n yinchi=1/c11h16brno2/c1-7(13)4-8-5-9(12)11(15-3)6-10(8)14-2/h5-7h,4,13h2,1-3h3key: yfslpsitqiufqk-uhfffaoyau smiles brc1cc(c(oc)cc1oc)cc(n)c properties chemical formula c11h16brno2 molar mass 274.154 g/mol except where otherwise noted, data are given for materials in their standard state (at 25 °c , 100 kpa). y verify (what is yn ?) infobox references