Crustacean cardioactive peptide (CCAP) is a highly conserved, amidated cyclic nonapeptide with the primary structure PFCNAFTGC-NH2 (ProPheCysAsnAlaPheTyrGlyCys-NH2) and a disulfide bridge between Cys3 and Cys9. It is found in crustaceans and insects where it behaves as a cardioaccelerator, neuropeptide transmitter for other areas of the nervous system and a hormone.

木质素是植物细胞壁的主要成分，是一种可再生的芳香族聚合物。木质素具有很强的抗氧化活性。木质素（Lignine）是一种天然的复合生物聚合物，具有生物可降解性和生物相容性。

5-Hydroxymaltol 3-O-beta-D-glucoside