PTZ-256 is a phenothiazine derivative with chemical name: 3-(10H-phenothiazin-10-yl)propane-1-amine. PTZ-256 has molecule weight 256, therefore, we call it as PTZ-256.
GSK 256066 Trifluoroacetate is a selective and high-affinity phosphodiesterase 4 (PDE) inhibitor (IC50: 3.2 pM for PDE4B). It can be used for the treatment of chronic obstructive pulmonary disease.