Pancuronium dibromide; 1,1'-((2S,3S,5S,8R,9S,10S,13S,14S,16S,17R)-3,17-diacetoxy-10,13-dimethylhexadecahydro-1H-cyclopenta[a]phenanthrene-2,16-diyl)bis(1-methylpiperidin-1-ium) bromide; CAS No.: 15500-66-0; This bis-piperidinium steroid derivative underscores ChemShuttle s leadership in pharma building blocks, designed for ion channel modulation studies. The 3,17-diacetoxy configuration and quaternary ammonium groups position it as a template for neuromuscular drug development. Operating through CRO chemical synthesis models, we execute challenging steroid di-functionalization (2,16-diyl piperidinium bridges) with strict stereochemical control. Our platform enables double quaternization reactions while preserving the delicate cyclopenta[a]phenanthrene framework.