cis-4-Hydroxy-D-proline belongs to the class of organic compounds known as proline and derivatives. Proline and derivatives are compounds containing proline or a derivative thereof resulting from a reaction of proline at the amino group or the carboxyl group or from the replacement of any hydrogen of glycine by a heteroatom.

3, 5-Diiodotyrosine is a product from the iodination of monoiodotyrosine.

Digiferruginol has cytotoxic activity. Digiferruginol and hederagenin show weak effect on porcine respiratory and reproductive syndrome virus (PRRSV) with an IC50 value of 80.5 ± 16.9 uM(SI = 19.9) and 43.2 ± 7.4 uM (SI = 13.1), respectively.