3-Butynoic acid is a potent inhibitor of acyl CoA dehydrogenase, a substrate for the Zn-dependent flavoproteinase D-lactate dehydrogenase, and can be used to study lactic acid metabolism.

Niacin (Nicotinic acid) is a water-soluble vitamin belonging to the vitamin B family, which occurs in many animal and plant tissues, with antihyperlipidemic activity. Niacin is converted to its active form niacinamide, which is a component of the coenzymes nicotinamide adenine dinucleotide (NAD) and its phosphate form, NADP.

Gallic acid (Benzoic acid) is found in almost all plants. Plants known for their high gallic acid content include gallnuts,grapes,tea,hops and oak bark.

2,4-Dihydroxypyrimidine-5-carboxylic acid (Isoorotic acid) has been obtained from 5-formyluracil by the action of enzyme, thymine 7-hydroxylase. 2,4-Dihydroxypyrimidine-5-carboxylic acid has been used to synthesize N1-alkylated uracil derivatives.

2'-Deoxycytidine is one of the major nucleosides of DNA consisting of cytosine and deoxyribose and inhibits the biological effects of bromodeoxyuridine (Brdu). The nucleoside consists only of a pentose sugar attached to a purine or pyrimidine base and has no phosphate group. When N1 is attached to C1 of deoxyribose, deoxyribosides and nucleotides are formed from cytosine and deoxyribose; deoxycytidine monophosphate (dCMP), deoxycytidine diphosphate (dCDP), and deoxycytidine triphosphate (dCTP). cTP is the source of cytosine in RNA (ribonucleic acid) and deoxycytidine triphosphate (dCTP) is the source of deoxycytidine in DNA (deoxyribonucleic acid). Itaconic acid is a polymer.