6-chloro-mdma 6-chloro-mdma 6-chloro-mdma (6-cl-mdma, 2-cl-4,5-mdma) is a derivative of the amphetamine drug mdma, which has been identified both in seized "ecstasy" tablets and in urine samples from drug users. it is thought most likely to be an impurity from synthesis and its pharmacological properties have not been established, however it has been banned in several countries. 6-chloro-mdmaclinical dataatc codenonelegal statuslegal status ca: schedule iii de: anlage i (authorized scientific use only) uk: class a identifiers iupac name 1-(6-chloro-1,3-benzodioxol-5-yl)-n-methylpropan-2-amine cas number319920-71-3 npubchem cid60209987unii6g65ju3bbzchemical and physical dataformulac11h14clno2molar mass227.69 g·mol−13d model (jsmol)interactive image smiles cnc(c)cc2cc1ococ1cc2cl inchi inchi=1s/c11h14clno2/c1-7(13-2)3-8-4-10-11(5-9(8)12)15-6-14-10/h4-5,7,13h,3,6h2,1-2h3key:uugioxdvhpqroz-uhfffaoysa-n legal status 6-chloro-mdma is illegal in the uk, germany (anlage i) and china.