Yatein is a natural product isolated from from Cleistanthus boivinianu or Chamaecyparis obtusa. Yatein suppresses herpes simplex virus type 1 replication in HeLa cells by interruption the immediate-early gene expression. The mechanisms of antiviral action of yatein seem to be mediated, by inhibiting HSV-1 α gene expression, including expression of the ICP0 and ICP4 genes, and by arresting HSV-1 DNA synthesis and structural protein expression in HeLa cells. Yatein showed antiproliferative activity against the HCT-116 human colon carcinoma cell line, with an IC50 > 10 uM.

Providing storage is as stated on the product vial and the vial is kept tightly sealed, the product can be stored for up to 24 months.
Wherever possible, you should prepare and use solutions on the same day. However, if you need to make up stock solutions in advance, we recommend that you store the solution as aliquots in tightly sealed vials at -20°C. Generally, these will be useable for up to one month. Before use, and prior to opening the vial we recommend that you allow your product to equilibrate to room temperature for at least 1 hour.