Lot ZX1449F was a batch of bacta produced by the Xucphra Corporation. Ashern rebels sabotaged the bacta in ZX1449F, which was sent to Coruscant and infected two million people. All patients treated with this lot became severely allergic to bacta, and approximately two percent contracted blastonecrosis.
After discovering this, Ysanne Isard had the lot eliminated by flooding it onto the black market.