Saponin Adjuvant--0S-21-Api

Saponin Adjuvant--0S-21-Api

QS-21-Api is the most abundant component in naturally sourced QS-21, characterized by a single structure. QS-21 is a triterpenoid saponin purified from the bark extract of the Quillaja saponaria Molina tree, and it is a mixture of QS-21-Api and QS-21-Xyl in a ratio of 65:35.

Higher Purity
GMP Production
Stable supply
Unrestricted Source
Proprietary Intellectual Property
Saponin QS Series Molecular Library

Single-structure QS-21-Api

QS-21-Api exhibits equivalent immunogenic activity to naturally sourced QS-21

We also offer other QS-21 series analogs such us QS-21-Xyl and additional QS21-like saponins, providing personalized customization services to meet specific requirements.