P1, P4- Di- (adenosine- 5')- tetraphosphate (Ap4A / AppppA) from MyBioSource.com

C₂₀H₂₈N₁₀O₁₉P₄; MW 836.4 (free acid); lambda_max 259 nm; epsilon 27000; sodium salt; purity > 95% HPLC.

For other salt forms or analogues please inquire. Induces proliferation of vascular smooth muscle cells (Bobbert et al., Biochem. Pharmacol., 75, 1966 - 1973 (2008)), apoptosis in human cultured cells (Vartanian et al., FEBS Lett., 456, 175 - 180 (1999)) and exhibits vasoconstrictor activity (Lewis et al., Br. J. Pharmacol., 129, 124 - 130 (2000)). Detailed technical information and references available