| PubChem = 236 | SMILES = N[C@@H](CC(N)=O)C(O)=O}} | Section2 = | Section3 = }} Asparagine (abbreviated as Asn or N; Asx or B represent either asparagine or aspartic acid)'s one of the 20 most common natural amino acids on Earth. It's carboxamide as the side chain's functional group. It isn't an essential amino acid. Its codons are AAU and AAC. A reaction between asparagine and reducing sugars or reactive carbonyls produces acrylamide (acrylic amide) in food when heated to sufficient temperatu… (More on Asparagine)