Angeloylgomisin O is a nartural product from Schisandra chinensis.

Labetalone hydrochloride is an impurity of Labetalol. Labetalol is an orally active adrenoceptor blocking drug, Labetalol is a competitive antagonist at both alpha- and beta-adrenoceptor sites.

Tirapazamine is a potent cytotoxic agent under hypoxic conditions, can induce apoptosis by inducing breaks in single and double-stranded DNA, as well as chromosomal breaks.