dmpx dmpx dmpx (3,7-dimethyl-1-propargylxanthine) is a caffeine analog which displays affinity to a2 adenosine receptors, in contrast to the a1 subtype receptors. dmpx had 28× and 15× higher potency than caffeine in blocking peripheral and central neca-responses. the locomotor stimulation caused by dmpx (ed50 10 μmol/kg) was similarly higher than caffeine. dmpxclinical dataatc codenoneidentifiers iupac name 3,7-dimethyl-1-(2-propyn-1-yl)-3,7-dihydro-1h-purine-2,6-dione cas number14114-46-6 ypubchem cid99562chemspider89948unii5yfr5sps6tcomptox dashboard (epa)dtxsid30161577 echa infocard100.162.258 chemical and physical dataformulac10h10n4o2molar mass218.216 g·mol−13d model (jsmol)interactive image smiles cn2cnc(c2c1=o)n(c)c(=o)n1cc#c inchi inchi=1s/c10h10n4o2/c1-4-5-14-9(15)7-8(11-6-12(7)2)13(3)10(14)16/h1,6h,5h2,2-3h3key:iorpofjlsihjog-uhfffaoysa-n