Ascr#5 是秀丽隐杆线虫中高度保守的蛔苷类物质。

N-Acetyl-Ser-Asp-Lys-Pro (TFA), an endogenous tetrapeptide secreted by bone marrow, is a specific substrate for the N-terminal site of ACE.

4-(9H-fluoren-9-ylmethoxycarbonylamino)-piperidine-1,4-dicarboxylic acid mono-tert-butyl ester is a substituted piperidine derivative widely used in organic synthesis as a linker to form peptide and peptidomimetic molecules, and is widely used in peptide synthesis and peptide mimicry, as well as in the synthesis of pharmaceuticals, biopolymers and other organic molecules.