bob (psychedelic) bob (psychedelic) bob (4-bromo-2,5,beta-trimethoxyphenethylamine) is a lesser-known psychedelic drug. it is the beta-methoxy analog of 2c-b. bob was first synthesized by alexander shulgin. in his book pihkal, the dosage range is listed as 10–20 mg, and the duration listed as 10–20 hours. bob produces an altered state of consciousness, tinnitus, a pleasant tingling throughout the body, and a sense of awareness. very little data exists about the pharmacological properties, metabolism, and toxicity of bob. bob names preferred iupac name 2-(4-bromo-2,5-dimethoxyphenyl)-2-methoxyethan-1-amine other names 4-bromo-2,5,β-trimethoxyphenethylamine2-(4-bromo-2,5,β-trimethoxyphenyl)ethanamine identifiers cas number 98537-42-9 y 3d model (jsmol) interactive image chembl chembl191051 y chemspider 21106261 y pubchem cid 15185771 unii 89a0hnr42s y comptox dashboard (epa) dtxsid60569805 inchi inchi=1s/c11h16brno3/c1-14-9-5-8(12)10(15-2)4-7(9)11(6-13)16-3/h4-5,11h,6,13h2,1-3h3 ykey: fytlqnzpdwlgnu-uhfffaoysa-n yinchi=1/c11h16brno3/c1-14-9-5-8(12)10(15-2)4-7(9)11(6-13)16-3/h4-5,11h,6,13h2,1-3h3key: fytlqnzpdwlgnu-uhfffaoyas smiles coc1cc(c(cc1br)oc)c(cn)oc properties chemical formula c11h16brno3 molar mass 290.157 g·mol−1 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 legality united kingdom this substance is a class a drug in the drugs controlled by the uk misuse of drugs act.