Purity ≥ 95% by HPLC. Bafilomycin D shares the same mode of action as bafilomycin A1 which has been the analog of choice in cell biology studies of the role of ATPase. Bafilomycin D contains the ring opened side chain and is a much more stable analog of bafilomycin A1. In-house data demonstrate that bafilomycin D is also a much more selective inhibitor of mammalian cells than bafilomycin A which exhibits a broad profile against tumor cells, fungi and nematodes. Limited availability has restricted a more in depth investigation of this metabolite. Source: Bafilomycin D Molecular Weight: ~604.8 Solubility: Soluble in ethanol, methanol, DMF or DMSO.