TLD-1433 is the fourth-generation ruthenium (II) based photodynamic compound (PDC). TLD-1433 is activated by green light (525 ± 25 nm) and efficiently generates ROS to achieve pathogen inactivation. After photoinactivation, TLD-1433 significantly induces lipid peroxidation of the cell membrane, which can directly damage the integrity of the viral envelope. TLD-1433 has ID50 for enveloped viruses (such as H1N1 influenza virus, coronavirus OC43, HSV-1, Zika virus) is as low as nanomolar level; for non-enveloped viruses (such as adenovirus Ad5, mammalian rotavirus MRV), a concentration of micro-molar level is required for inactivation. TLD-1433 has antigen retention property and can be used for the preparation of inactivated vaccines.

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.