H-Phe-Phe-OH is a peptide made of two phenylalanine molecules; Phenylalanine is an essential amino acid and the precursor for the amino acid tyrosine.

Adenosylcobalamin is a biologically active form of vitamin B12 .It is a cofactor for methylmalonyl CoA mutase.?It belongs to the corrinoid group of compounds, which contain a corrin macrocycle, and is produced only by certain bacteria and archaea.?

2′-Deoxyadenosine 5′-monophosphate disodium, a nucleic acid AMP derivative, is a deoxyribonucleotide found in DNA. 2′-Deoxyadenosine 5′-monophosphate disodium can be used to study adenosine-based interactions during DNA synthesis and DNA damage.