tomso tomso tomso (2-methoxy-4-methyl-5-methylsulfinylamphetamine) is a lesser-known psychedelic drug and a substituted amphetamine. tomso was first synthesized by alexander shulgin. in his book pihkal, the dosage range is listed as 100–150 mg, and the duration listed as 10–16 hours. tomso is inactive on its own; it is activated with the consumption of alcohol. it produces intense time distortion and a threshold. very little data exists about the pharmacological properties, metabolism, and toxicity of tomso. tomso names preferred iupac name 1-propan-2-amine identifiers cas number 757142-16-8 y 3d model (jsmol) interactive image chemspider 21106387 y pubchem cid 15915373 unii 7sw3c48m3b y inchi inchi=1s/c12h19no2s/c1-8-5-11(15-3)10(6-9(2)13)7-12(8)16(4)14/h5,7,9h,6,13h2,1-4h3 ykey: lmqlbxoycgxtom-uhfffaoysa-n yinchi=1/c12h19no2s/c1-8-5-11(15-3)10(6-9(2)13)7-12(8)16(4)14/h5,7,9h,6,13h2,1-4h3key: lmqlbxoycgxtom-uhfffaoyad smiles coc1=c(c=c(c(=c1)c)s(=o)c)cc(c)n properties chemical formula c12h19no2s molar mass 241.35 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