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1-Aminocyclopropanecarboxylic acid is found in fruits. 1-Aminocyclopropanecarboxylic acid is isolated from apple and pear juice and cranberries.

A 2,3-dehydroamino acid resulting from the formal elimination of water from the side-chain of threonine." []

2-iminobutanoic acid is a dehydroamino acid that is 2-aminobutanoic acid in which the amino group has been oxidised to the corresponding imine. It is a dehydroamino acid, a ketimine and a monocarboxylic acid. It is a tautomer of a 2-iminobutanoic acid zwitterion, a 2-aminobut-2-enoic acid zwitterion and a 2-aminobut-2-enoic acid. 2-Iminobutanoate is a metabolite found in or produced by Escherichia coli (strain K12, MG1655).

acetoacetamide

A ketoxime obtained via formal condensation of butane-2,3-dione with hydroxylamine. It is a reversible myosin ATPase inhibitor." []

L-3-Aminodihydro-2(3H)-furanone is found in pulses. L-3-Aminodihydro-2(3H)-furanone is a constituent of pea Pisum sativum seedlings

The (S)-enantiomer of azetidine-2-carboxylic acid." []

L-homoserine lactone is the L-enantiomer of homoserine lactone. It is a conjugate base of a L-homoserine lactone(1+). It is an enantiomer of a D-homoserine lactone.

N-methylolacrylamide appears as a colorless or yellow aqueous solution. N-Methylolacrylamide is a secondary carboxamide. n-Methylolacrylamide can cause cancer according to The National Toxicology Program.

L-vinylglycine is a non-proteinogenic L-alpha-amino acid with a structure in which a vinyl group is bonded to the alpha-carbon of glycine. It has a role as an EC 4.4.1.14 (1-aminocyclopropane-1-carboxylate synthase) inhibitor. It is a glycine derivative and a non-proteinogenic L-alpha-amino acid. It is a tautomer of a L-vinylglycine zwitterion. Vinylglycine is an irreversible inhibitor of aspartate aminotransferase.

(S)-2-Azetidinecarboxylic acid is found in common beet. (S)-2-Azetidinecarboxylic acid is present in roots and leaves of Convallaria majalis (lily-of-the-valley). Convallaria majalis is banned by the FDA from food use in the US

A proline analog that acts as a stoichiometric replacement of proline. It causes the production of abnormal proteins with impaired biological activity.

N-methyl-beta-alanine is soluble (in water) and a weakly acidic compound (based on its pKa). N-methyl-beta-alanine can be found in a number of food items such as common chokecherry, cauliflower, peach (variety), and plains prickly pear, which makes N-methyl-beta-alanine a potential biomarker for the consumption of these food products.