5'-DMT-dC(Ac) Synthesis Column; 500 is for use on DNA synthesizers with luer column fittings (ABI 394 Expedite Biosearch 8700 etc.). 5'-DMT-dC(Ac)-Suc-CPG is used for the placement of dC on the 3' end of oligonucleotides. The 500 CPG is useful for the synthesis of oligos up to 50-mers in length especially when larger amounts of product are desired as it allows for greater nucleoside loading amounts than do supports with larger pore sizes.