N-Acetyl-L-phenylalanine is an essential amino acid produced for medical feed and nutritional applications. It appears in large amount in urine of patients with phenylketonuria which is a human genetic disorder due to the lack of phenylalanine hydroxylase the enzyme necessary to metabolize phenylalanine to tyrosine.

Biotin-PEG4-Picolyl azide is a PROTAC linker belonging to the class of PEGs that can be used to synthesize PROTAC molecules.

TLR1 is a cell-penetrating Toll/IL-1 receptor/resistance (TIR) domain/BB-Loop mimic and inhibits IL-1 receptor-mediated responses.