px-1 px-1 px-1 (also known as 5f-app-pica and srf-30) is an indole-based synthetic cannabinoid that has been sold online as a designer drug. px-1legal statuslegal status ca: schedule ii de: npsg (industrial and scientific use only) uk: class b identifiers iupac name (s)-n-(1-amino-1-oxo-3-phenylpropan-2-yl)-1-(5-fluoropentyl)-1h-indole-3-carboxamide cas number2221100-71-4 ypubchem cid125181260chemspider32055575uniibj7sbq2h5ichemical and physical dataformulac23h26fn3o2molar mass395.478 g·mol−13d model (jsmol)interactive image smiles o=c(n(c(n)=o)cc1=cc=cc=c1)c2=cn(cccccf)c3=c2c=cc=c3 inchi inchi=1s/c23h26fn3o2/c24-13-7-2-8-14-27-16-19(18-11-5-6-12-21(18)27)23(29)26-20(22(25)28)15-17-9-3-1-4-10-17/h1,3-6,9-12,16,20h,2,7-8,13-15h2,(h2,25,28)(h,26,29)/t20-/m0/s1key:ddvantxqcrmrff-fqevstjzsa-n legality sweden's public health agency suggested classifying px-1 as hazardous substance on november 10, 2014. px-1 is listed in the fifth schedule of the misuse of drugs act (mda) and therefore illegal in singapore as of may 2015.