Antiviral agent 64 (Compound 12) is a diarylheptanoid that can be isolated from Alpinia officinarum. Antiviral agent 64 exhibits cytotoxicity in human neuroblastoma cell IMR-32 with an IC50 of 0.23 μM. Antiviral agent 64 exhibits antiviral efficacy, that inhibits RSV, poliovirus, measles virus, HSV-1, and influenza virus H1N1, with EC50 of 13.3, 3.7, 6.3, 5.7, and <10 μg/mL, respectively.

X-press Tag is an N-terminal leader peptide; this N-terminal peptide contains a polyhistidine sequence, the Xpress epitope (part of bacteriophage T7 gene 10 protein) and an enterokinase cleavage site. Anti-Xpress antibodies recognize the Xpress epitope sequence found in this leader peptide.

Saponarin shows in vitro and in vivo hepatoprotective and antioxidant activity against CCl4-induced liver damage.